JPWO2009113130A1 - Transmission control system - Google Patents

Abstract

[PROBLEMS] To automatically and manually adjust light intensity and light sensitivity adjustment of single or multiple light projecting elements, and automatically address the address of a slave station input section and slave station input / output section following a management slave station. The present invention relates to a transmission control system to be set in In the transmission control system of the present invention, a management slave station delivers an address to a slave station input unit and a slave station input / output unit following the management slave station, and the slave station input unit and slave station input / output unit that follow one another. This is a transmission control system that automatically sets the address by passing the address to the receiver, and it continues with a single adjustment by transmitting the cascade setting signal of the photosensitivity setting data of single or multiple projector elements. The present invention relates to a transmission control system that collectively adjusts sensitivity settings of a station input unit and a slave station input / output unit. [Selection] Figure 1

Description

  The present invention provides a transmission control system in which a master station, a management slave station, a slave station input unit, or a slave station input / output unit are distributed on a transmission line, and a plurality of slave station input units or slave station input / output units are automatically The present invention relates to a transmission control system that automatically recognizes addresses and automatically sets threshold values for sensor sensitivity setting and signal determination.

  Conventionally, in a transmission control system in which the master station and slave stations are distributed on the transmission line, the address setting method is based on the address setting function inside each master station and slave station, or the address is transmitted from the outside. The way to set it has been done.

Also, a method for monitoring data detection threshold setting and sensitivity setting when each slave station is a monitoring system is set by a setting means inside the slave station or by data transmission.
For example, Patent Document 1 describes that a transmission control system including a control unit and an intermediary station is a transmission control system, superimposing a power supply on a clock signal, and further superimposing a monitoring signal and a control signal. It is described that the intermediary station transmits the control signal to the controlled device 12. However, each slave station has an address setting unit. In this system, it is necessary to set the address of each slave station after installation, and the work after the installation work is complicated.

Further, in Patent Document 1, it is not possible to set the sensitivity of the monitoring signal of the slave station, set the threshold for determination, and obtain error information.
In the system of Patent Document 1, the so-called wiring-saving function that omits wiring was effective, but it took time to perform installation adjustment.
JP 2005-80256 A

The present invention is a method for providing an address automatic setting function to a cascade connection signal, which is an address setting method that such a conventional configuration has, and does not have an address setting function inside each slave station. The slave station, slave station input unit or slave station input / output unit has a function that automatically recognizes its own station address, and by automatically recognizing the slave station address, it can be set individually without requiring a slave station address setting circuit. The purpose is to simplify the operation.
In addition, by remotely setting the monitoring sensitivity setting and monitoring threshold setting of the slave station at the management slave station, it is possible to remotely control and adjust the monitoring sensitivity setting and monitoring threshold setting of the dispersed and connected slave stations in the transmission system. Thus, an object is to eliminate the troublesome setting of the monitoring sensitivity setting and the monitoring threshold setting individually.

  In order to achieve the above object, according to the present invention, the slave station input unit or the slave station input / output unit recognizes and sets the address of its own station by the timing signal transmitted from the management slave station for address recognition. At the same time, the monitoring sensitivity setting and the monitoring threshold value setting can be performed at a remote place without being individually performed by the management slave station, slave station input unit or slave station input / output unit.

In claim 1 of the present invention,
Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input unit or slave station input / output unit includes a power supply unit for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A management slave station with its own address setting function
When the address value set by the address setting function matches the address counter data that starts counting from the start bit (Start Bit) transmitted from the master station,
For the slave station input unit or slave station input / output unit cascade-connected after the management slave station, the movement timing signal is output to individual signal lines.
The slave station input unit or slave station input / output unit starts counting from a start bit (Start Bit) when it receives a movement timing signal from the management slave station or slave unit input unit or slave station input / output unit. When the counter data is the address value of the slave station, or when the slave station input unit or slave station input / output unit matches the address counter data obtained by adding the address data width occupied by the slave station to the address value A transmission control system is described in which address recognition of cascade-connected slave stations is sequentially performed by outputting movement timing signals to individual signal lines for the slave stations to be connected next.

According to claim 2 of the present invention,
Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input unit or slave station input / output unit includes a power supply unit for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A management slave station with its own address setting function
When the address value set by the address setting function matches the address counter data that starts counting from the start bit (Start Bit) transmitted from the master station,
Outputs address counter data to individual signal lines for the slave station input section or slave station input / output section cascaded after the management slave station,
The slave station input unit or slave station input / output unit uses the address counter data from the management slave station as the address value of the slave station input unit or slave station input / output unit, and the slave station input unit or slave station input / output unit. When the output unit matches the address counter data obtained by adding the address data width occupied by the slave station input unit or slave station input / output unit to the address value, the slave station input unit or slave station input / output unit to be connected next On the other hand, a transmission control system is described in which the address counter data is output to individual signal lines, and address recognition of cascade connected slave station input units or slave station input / output units is sequentially performed.

According to claim 3 of the present invention,
Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input section or slave station input / output section has a power supply section for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A slave station input unit or slave station input / output unit, each of which is a plurality of detection heads that monitor the sensor unit of the controlled unit, and a slave station input unit or slave station input / output unit that is a plurality of detection heads is detected An A / D converter that converts an analog signal for detecting the presence or absence of a body into a digital value, and the management slave station determines the presence or absence of a detected body with respect to a plurality of slave station input units or slave station input / output units. It has a sensitivity setting function for judging, and the data obtained by A / D-converting the analog value of the variable adjuster that is the sensitivity setting device or the digital data of the digital switch data as a sensitivity setting value through a plurality of slave stations Transmission is sequentially performed in cascade to the input unit or the slave station input / output unit, and a plurality of the slave station input units or slave station input / output units slave stations respectively detect the sensitivity setting value transmitted and the detected object. Compare with A / D converter data A transmission control system is described in which the sensitivity setting of a plurality of slave station input units or slave station input / output units is collectively performed by the sensitivity setter in the management slave station by detecting the presence or absence of the detected object. ing.

According to claim 4 of the present invention, in claim 3,
The data obtained by A / D converting the analog value of the variable adjuster, which is a sensitivity setting device provided in the management slave station, matches or does not match a specific data value (for example, “0 level” data value), or the internal switch is turned on or A transmission control system having a function of selecting a sensitivity setting value of a sensitivity setting unit in a management slave station or selecting a sensitivity setting value transmitted from the master station to the management slave station by turning off is described. Has been.

According to claim 5 of the present invention, in claim 3,
The data obtained by A / D converting the analog value of the variable adjuster, which is a sensitivity setting device provided in the slave station input unit or slave station input / output unit, matches or does not match the specified data value (for example, “0 level” data value). Select the sensitivity setting value of the sensitivity setting unit in the slave station input unit or slave station input / output unit by turning the internal switch on or off, or transmit from the management slave station to the slave station input unit or slave station input / output unit A transmission control system having a function of selecting the sensitivity setting value is described.

According to claim 6 of the present invention, in claims 1 to 5,
An address address obtained by adding a specific offset address value to the address address group of on / off detection data indicating the presence or absence of a detection object in the slave station input unit or slave station input / output unit is input to each slave station input unit or each slave station. A transmission control system is described which is a single or a plurality of groups of sensor terminals as error data groups corresponding to the output unit.

According to claim 7 of the present invention, in claims 1 to 6,
In claims 1 to 6,
The control slave station and a group of slave station input units or slave station input / output units connected to it are located away via a transmission cable, and the address address setting and sensitivity adjustment value of the sensor terminal can be set remotely. A transmission control system is described which is characterized by being enabled.

According to the transmission control system of the present invention,
In a transmission control system in which a master station, a management slave station, a slave station input unit, or a slave station input / output unit exist on the transmission line, the address setting of the management slave station, the slave station input unit, or the slave station input / output unit is automatically performed. Without any special individual address setting mechanism, and remote control without the need to set the sensitivity of the management slave station, slave station input unit or slave station input / output unit, or set the threshold individually. Sensitivity setting and threshold setting can be easily performed.

  According to the present invention, the address setting of the slave station input unit or the slave station input / output unit of the transmission control system in which the master station, the management slave station, the slave station input unit, or the slave station input / output unit is distributed on the transmission line is performed. Transmission control system can be recognized automatically and can be easily performed by remote control without the need to set the sensitivity and threshold settings of the management slave station, slave station input unit or slave station input / output unit individually. Adjustment work such as installation adjustment, sensitivity adjustment, and threshold adjustment can be simplified, system startup time can be shortened, test adjustment time can be significantly shortened, work costs can be reduced, and higher system software The development time was shortened and improved.

  DESCRIPTION OF EMBODIMENTS Embodiments of a transmission control system according to the present invention will be described below with reference to the drawings.

An embodiment of the transmission control system of the present invention will be described with reference to FIGS.
FIG. 1 shows a block diagram of a transmission control system according to an embodiment of the present invention.
In FIG. 1, between the control unit 1 and the master station 6, a control unit output signal 4, which is a parallel output signal, is sent from the output unit 2 of the control unit 1 to the master station 6. The input unit 3 receives a parallel input signal from the master station 6 as the control unit input signal 5. The master station 6 is connected to the DP signal line 7 and the DN signal line 8 and is connected to a plurality of sensor systems 11. The plurality of sensor systems 11 includes a management slave station 10 and a slave station input unit 12 or a slave station input / output unit 12 cascaded from the management slave station 10, and both are connected to the DP signal line 7 and the DN signal line 8. Yes. The control unit 1 grasps the monitoring data of the slave station input unit 12 or the slave station input / output unit 12 constituting all the sensor systems 11 via the master station 6. The slave station input unit 12 or the slave station input / output unit 12 connected from the management slave station 10 by the cascade connection line transmits the address data, sensitivity setting data, and the like transmitted by the TDn timing signal 17 through the cascade connection line. Receive error data. The slave station input unit 12 or the slave station input / output unit 12 that has received the address data generates address data of the next slave station input unit 12 or the slave station input / output unit 12 connected by the subsequent cascade connection line, and generates TDn timing. The address data, sensitivity setting data, and error data are transmitted to the next slave station input unit 12 or slave station input / output unit 12 cascaded as a signal 17.

In FIG. 1, the upper sensor system 11 is a reflective sensor terminal, and is used as a mapping sensor terminal or a picking terminal.
The upper sensor system 11 is a reflective sensor terminal, and is used as a mapping sensor terminal or a picking terminal.
The next-stage sensor system 11 is a transmissive sensor terminal, and is used as a mapping sensor terminal, a picking terminal, and an area sensor.

In this way, a plurality of sensor terminals are connected by a cascade signal according to the system configuration, regardless of whether the sensor is a reflection type sensor terminal or a transmission type sensor terminal. When the address of the station input section or slave station input / output section is automatically set, or when the sensor sensitivity or sensor threshold setting is set by the management slave station, the slave station input section or slave station in which the settings are cascade-connected one after another The structure which an input / output part inherits is shown.
The third-stage sensor system 11 is a sensor terminal having a general-type slave station input unit, and is used as a mapping sensor terminal, a picking terminal, and an area sensor.
The fourth-stage sensor system 11 is a sensor terminal having a general-type slave station input / output unit, and is used for the purpose of displaying and inputting a picking terminal or the like.
That is, the slave station input section or slave station input / output section below the management slave station is connected in cascade, and the address data and setting of the slave station input section 12 or slave station input / output section 12 to be connected next by the TDn timing signal 17 are set. Since the data and error information are exchanged, the slave station input unit 12 or the slave station input / output unit 12 other than the management slave station does not need an address setting function, and can automatically set the address and sensitivity.

FIG. 2 shows a block diagram of the sensor system according to the embodiment of the present invention.
In the figure, the control unit 1, the master station 6, and the DP signal line 7 and DN signal line 8 that are transmission lines are connected to each other in the same configuration as in FIG. The sensor system 11 is connected from the management slave station 10 to the slave station input / output unit by a timing signal 17, and the sensor signal is fetched from the sensor unit 9 to the slave station input / output unit. The DP signal line 7 and the DN signal as transmission lines A line 8 indicates that the monitoring signal of the sensor unit is transmitted to the master station 6. Moreover, the example which can connect the some mapping terminal and can comprise the mapping sensor system 11 is shown. In other words, the mapping terminal including the individual sensor units 9 and the slave station input units 12 constituting the mapping terminal system does not need to have an address setting mechanism individually. Therefore, the address setting operation for each mapping terminal which has been conventionally performed individually is not necessary. Further, it is not necessary to set the sensitivity of the sensor and the threshold setting for determining the detection lower limit.
With such a configuration, a system configuration in which a plurality of sensor terminals are connected and address recognition of the slave station input unit or slave station input / output unit connected one after another by the timing signal 17 and sensor sensitivity and sensor detection threshold setting are performed simultaneously. The figure is shown.

FIG. 3 shows a timing signal connection diagram of the transmission control system according to the embodiment of the present invention.
In the sensor system 11 shown in the figure, the DP signal line 7 and DN signal line 8 which are transmission lines, and the TDn timing signal 17 allow the management slave station 10 and the slave station input unit 12 to be connected to a branch connector like the inter-slave station connection 13, It shows that a transmission control system can be configured by being connected by a connection connector. As shown in the figure, the DP signal line 7 and DN signal line 8 that are transmission lines and each slave station input unit 12 or the slave station input / output unit 12 are connected in parallel, and the TD0 timing signal 17 is transmitted from the management slave station to the slave station. The TD1 timing signal 17 is cascade-connected to the input unit (# 0) from the slave station input unit (# 0) to the slave station input unit (# 1). As a result, each slave station input unit 12 or slave station input / output unit 12 counts the clock of the TDn timing signal 17, determines what number the count value is connected to from the management slave station, and sets its own address. At the same time, the setting signal superimposed on the TDn timing signal 17 can be taken into the own station.

FIG. 4 is a functional block diagram of the management slave station according to the embodiment of the present invention.
In the figure, the management slave station 10 first generates the power of its own station from the transmission signal through the connection points DP and DN of the DP signal line 7 and DN signal line 8 which are transmission lines and the management slave station. The slave station input unit or the slave station input / output unit can operate based on the power, and the wiring is omitted, so-called wiring saving is realized. At the same time, the management slave station 10 extracts the CK signal 22 from the DP signal line 7 and the DN signal line 8 and delivers them to the MCU 15. The management slave station 10 has an address setting 14 and sets its own address by this setting function.
The management slave station 10 takes in the set value from the ADATA signal port 26 of the MCU 15 after the analog setting signal obtained from the variable voltage adjustment circuit is converted into a digital signal by the A / D converter 16 for sensitivity setting or threshold setting.

The external setting switch input is input to the INS setting input port by the INS signal 25, the sensitivity setting or threshold address is set to the internal setting of the management slave station 10 when the switch is turned on “1”, and the sensitivity setting or threshold address is set when the switch is turned off “0”. The external setting can be set by receiving from outside the management slave station 10.
When the MCU 15 matches the address set in the address setting 14 of the local station address from the clock signal CK22, the MCU 15 performs a cascade connection to the slave station input unit or the slave station input / output unit under the management slave station 10. As the TDn timing signal 17, a signal obtained by adding 1 to the address of the own station or adding address width data to the address of the own station is output.
At the same time, when the setting data is set inside the management slave station 10, the analog setting signal obtained from the variable voltage adjustment circuit is converted into a digital signal by the A / D converter 16 and superimposed on the TDn timing signal 17. To the next slave station input unit 12 or slave station input / output unit 12.

FIG. 5 shows a schematic diagram of a signal bus inside the management slave station according to the embodiment of the present invention.
In the figure, a CPU 18 is connected to a RAM 19 and a ROM 20 by an internal bus of the MCU 15. The MCU 15 is initialized by an initialization program in the ROM 20 at the time of activation, and then the system is operated by the PRG1A program stored in the ROM 20. The RAM 19 has a data area, and the use of the data area is determined by switching between the K0 external sensitivity setting data and the K1 internal sensitivity setting data. CK signal 22 and ADRS signal 23 are received and INS signal 25 is accepted as a setting mode switch, analog setting data ADATA signal port 26 is fetched, and MCU 15 outputs Tout signal 24 via I / O bus 21. Signal exchange with the outside is performed.

FIG. 6 shows a configuration diagram of data input of the management slave station 10 according to the embodiment of the present invention.
In FIG. 4, after the analog setting signal is converted into a digital signal by the A / D converter 16, the setting value is fetched from the ADATA signal port 26 of the MCU 15, whereas the binary data of the switch array is directly fetched as digital data. This is used as a setting signal. In this case, a setting level is set using a digital switch or a rotary switch as a switch. The set level data is superimposed on the TD0 timing signal 17 that is an output signal of the management slave station 10 and transmitted to the slave station input unit 12 or the slave station input / output unit 12 connected next. Next, the connected slave station input unit 12 or the slave station input / output unit 12 can use the setting data transmitted by the TD0 timing signal 17 to set the sensitivity or threshold value of the local station.

FIG. 7 shows a schematic diagram of a signal bus inside the management slave station 10 according to the embodiment of the present invention.
It is a schematic diagram of the signal bus which connects the semiconductor functional element which comprises the management subunit | mobile_unit 10 of FIG. Although the configuration is the same as that in FIG. 5, the PRG1B program stored in the ROM 20 is different. Handling of numerical data in the program differs depending on whether the ADATA setting level data is binary data, decimal data, or hexadecimal data. Whether to use the external sensitivity setting data K0, which is a storage area in the RAM 19, in response to the INS signal 25, whether to use the internal sensitivity setting data K1 is shown in the schematic diagram of the signal bus inside the management slave station 10 in FIG. It is the same.

FIG. 8 shows a functional block wiring diagram of the slave station input unit 12 in the sensor system according to the embodiment of the present invention. In the figure, the slave station input unit 12 has the same configuration as the management slave station 10 except that the ADATAS signal 29 and the Tin signal 27 are input signals to the MCU 15 and the LED signal 28 is an output signal. The operation of the slave station input unit 12 is connected to the DP signal line 7 and the DN signal line 8 via the connection points DP and DN of the DP signal line 7 and DN signal line 8 which are transmission lines and the slave station input unit 12. Yes.
The slave station input unit 12 first generates its own power from the transmission signal. Owing to the operation of the slave station input unit 12 based on the electric power, wiring is omitted, so-called wiring saving is realized. At the same time, the CK signal 22 is extracted from the DP signal line 7 and the DN signal line 8 and delivered to the MCU 15. The MCU 15 receives the TDn timing signal 17 successively taken over from the management slave station 10 as a Tin signal 27 from the Tin port, recognizes the address of the own station from its own station address order, and sets the setting value output from the management slave station Receive signal and set sensitivity or threshold. That is, the TDn timing signal 17 includes address order information indicating the number of the slave station input unit counted from the management slave station 10, and the address of the own station is recognized based on the address order. Can do.

  Similarly to the management slave station 10, the slave station input unit 12 also sets whether the sensitivity setting or threshold setting is externally set with “0” logic or internally set with “1” logic depending on the input state of the INS signal 25. Can be decided. If it is an internal setting, the analog setting signal is converted into a digital signal by the A / D converter 16, and then a setting value is taken in from the ADATA signal port 26 of the MCU 15, and this setting value is used as a threshold for sensitivity setting or detection level. .

When the setting switch input is an external setting, that is, when the INS signal is “0”, the MCU 15 takes in the setting data following the address rank data of the local station address from the CK signal 22 and sets the setting. Data can be used as sensitivity setting or threshold setting of the slave station input unit, and sensitivity setting or threshold setting can be performed using this.
Next, the LED signal 28 is used as a light projection signal to turn on the light projector of the reflection type or transmission type sensor, the light reflection signal or light transmission signal of the light projection signal is received by the light receiver, and the analog light reception signal is converted to the A / D converter 16. The ADATAS signal 29 is taken in from the ADATAS port and compared with the previous sensitivity setting data or threshold value data to determine the presence or absence of the detection target.
The determination result is that the Iout signal is output as a current value in the latter half of the pulse of the local station data, and the master station 6 outputs the current value of the Iout signal 31 or the pulse duty ratio output of the slave station input unit or the slave station input / output unit. Detection information data can be recognized.

  Next, 1 is added to the local station address rank, or the local station address rank + address width data is added and output as a Tout signal 17 from the Tout port. This is address data generation of the slave station input unit 12 or the slave station input / output unit 12 to be cascade-connected next, and is address data transmitted by the TDn timing signal 17.

FIG. 9 is a schematic diagram of a signal bus of a management slave station, a slave station input unit, or a slave station input / output unit in the sensor system according to the embodiment of the present invention.
FIG. 9 is a schematic diagram of a signal bus connecting the semiconductor functional elements constituting the slave station input unit 12 of FIG. Although it has the same configuration as FIG. 5, it has a program of PRG2 stored in ROM 20, a port of Tin signal 27 and a port of ADATAS signal 29 as input ports, and a port of LED signal 28 and Iout 31 as output ports. Is different.

The CPU 18 first determines its own station address rank from the Tin signal 27 by the program PRG2 stored in the ROM 20, stores the address data in the RAM 19, and the INS signal 25 is in the "1" or "0" state. It is determined whether it is an external setting or an internal setting, and if it is an external setting, the setting data K following the signal STB1 which is the start bit (Start Bit) of the local address order of the CK signal 22 is stored in the external sensitivity setting data area K0. . If it is an internal setting, the internal setting data fetched from the ADATA signal port 26 is stored in the internal sensitivity setting data area K1.
The I / O bus 21 takes in the CK signal 22, the Tin signal 27, the INS signal 25, the ADATA signal port 26, and the ADATAS signal 29 as input signals, and outputs the Tout signal 24 and the LED signal 28 as output signals. Can be output.

FIG. 10 shows a time chart of signals when the management slave station, slave station input unit, or slave station input / output unit operates in the sensor system according to the embodiment of the present invention.
In the figure, the transmission line DP signal line 7 and the DN signal line 8 are cycled starting from a signal STB0 which is a start bit (Start Bit) having a longer cycle than a normal clock cycle. That is, when the data length of the address after the start bit (Start Bit) is 1 bit, as shown in the figure, the first bit is address 0 (ADRS0), the second bit is address 1 (ADRS1), and the slave station It continues for the number of input units or slave station input / output units, and returns to the start bit (Start Bit). The address data when the address data length has a width is a data delimiter for each address width. Here, a case where the address data length is 1 bit is shown. The second-stage CK signal is a clock signal and has a peak value of 0 to 24V.
The subsequent TD0 signal indicates the TD0 signal transmitted from the management slave station 10 after the start bit (Start Bit).

As shown in the figure, when the data length of the address is 1 bit, the TDn signal also follows the TD0 signal followed by the TD1 signal and continues to TDn-1 for each bit.
Further, the LED0 signal rises in synchronization with the rise of the clock and becomes a light projection signal. The phototransistor receives the reflected or transmitted signal of the light projection signal and generates a PHT0 signal. Similarly, the LED1 signal rises at the subsequent rise of the clock and becomes a light projection signal, and the phototransistor receives a reflection or transmission signal of the light projection signal to generate a PHT1 signal.

FIG. 11 shows a configuration diagram of a timing signal according to the embodiment of the present invention.
In the figure, the address data when the data length of the address of the slave station input section 12 has a width has pulse data corresponding to the data width of the address after the signal STB1 which is a start bit (Start Bit). Thus, the TD0 signal is obtained, and the TD1 signal is changed to the TDn-1 signal.

FIG. 12 shows a data state diagram of the timing signal according to the embodiment of the present invention.
In the figure, the first bit data and the second bit data are “0”, and the subsequent third bit data is “1”. In this case, the duty ratio is different and the data “0” and “1” are different. It makes a difference.

FIG. 13 shows a second configuration diagram of the timing signal according to the embodiment of the present invention.
In the figure, each of the setting data K follows the signal STB1 which is the start bit (Start Bit), and the MCU of the slave station input unit 12 stores the setting data K after the timing signal in the storage location in the case of external setting. Stored in the external sensitivity setting data K0 area.

FIG. 14 shows a memory map according to the embodiment of the present invention.
In the memory map diagram, sensor ON / OFF data is recorded in order in the sensor data address. In response to this, error information of each sensor is shifted and stored for each bias address “Z”, and only error information is stored. Status monitoring is facilitated by reading the data in a lump and separating and storing sensor data and error data.

FIG. 15 shows a detection signal diagram in the sensor system according to the embodiment of the present invention.
In the figure, the sensor signal error threshold level and the ON / OFF determination threshold are set for the signal change of the phototransistor signal PHT30 of the sensor, and these thresholds are also superimposed on the timing signal for each sensor. The data can be transmitted to each slave station input unit or slave station input / output unit.

FIG. 16 shows a remote setting function diagram of the management slave station according to the embodiment of the present invention.
The figure shows the mapping sensor system, but the management slave station 10 is placed at a position away from the mapping terminal, and the sensor sensitivity data is sent from the remote distance to the slave station input / output unit by the TDn timing signal 17 to enable remote adjustment. Thus, the adjustment of each mapping sensor is simplified.

FIG. 17 is a flowchart according to the embodiment of automatic address recognition of the management slave station of the present invention. The control procedure by the program will be described with reference to the drawing.
The following program is activated when the system is turned on. First, input / output operation for not performing input / output in an indefinite state is prohibited, and then initial data is written in the memory (step 1). Next, it waits for the start bit (Start Bit). Therefore, the N-side wait cycle is repeated until a start bit (Start Bit) is not received. When a start bit (Start Bit) is received, the loop is exited (step 2) and the address is accounted (confirmed and registered) (step 3). Here, the wait cycle is repeated until it matches the address value of the address setting function of the own station (step 4). When it matches the address value of the address setting function of the own station, the timing signal TD0 signal is turned ON and output from the Tout port (step 5). Account (confirm and register) the address again (step 6). When the address value is +1 (step 7), Tout is turned off (step 8), and the sensitivity setting data processing loop is entered (step 9). The sensitivity setting data processing loop will be described in detail with reference to FIG.

FIG. 18 is a flowchart according to an embodiment of automatic address recognition of the slave station input unit or slave station input / output unit of the present invention.
In the figure, a Tin signal, which is a timing signal, is received from the management slave station 10, the slave station input unit 12, or the slave station input / output unit 12, and the local address having an address width is automatically set by the Tin signal, which is a timing signal. In addition, a flowchart of a process of sending a Tout signal to the subsequent slave station input unit 12 or the slave station input / output unit 12 and then performing automatic sensitivity setting is shown.
First, the program shown in this flow is executed when the power is turned on.
The control procedure by the program will be described with reference to the drawing.

  The following program is activated when the system is turned on. First, input / output operation for not performing input / output in an indefinite state is prohibited, and then initial data is written in the memory (step 10). Next, it waits for the start bit (Start Bit) to come. When the start bit (Start Bit) does not come, the process returns from the judgment N in the flowchart to the entrance to the step and repeats the N-side wait (wait) cycle until the start bit (Start Bit) comes (Step 11). When a start bit (Start Bit) is received, the loop is exited and an address account is made (step 12). Here, it returns to the N side until the Tin signal which is a timing signal is turned on, and the Tin signal is monitored (step 13).

  When the Tin signal, which is a timing signal, is turned on (step 13), the address count value is written in the address storage area of the own station, thereby completing the address setting of the own station (step 14). In FIG. 18, since automatic address recognition is performed when there is an address width, the CK signal 22 is monitored and a wait is made for a pulse in which the address width pulse is added to the local address value (step 15, 16). When this state is reached, the Tout signal is turned on and sent to the next slave station input unit or slave station input / output unit (step 17).

  While the slave station input unit 12 or the slave station input / output unit 12 is in operation, the Tout signal is kept on so that the address width pulse is added to the address value of the local station and another pulse is added. (Step 18), and when the condition is reached, the Tout signal is turned off (step 20). Subsequently, a schematic process for performing the sensitivity setting data processing step (step 20), the signal detection processing (step 22), and the error detection processing (step 23) is shown, and details thereof will be described with reference to FIG.

FIG. 19 is a flowchart according to an embodiment of automatic address recognition of the second management slave station of the present invention.
In the figure, as in the previous figure, the following program is activated when the system is turned on. First, input / output operation for not performing input / output in an indefinite state is prohibited, and then initial data is written in the memory (step 24). Next, the Tin signal is monitored, and a start bit (Start Bit) is waited for. Therefore, the N-side wait cycle is repeated until a start bit (Start Bit) is not received. When the signal STB0 which is a start bit (Start Bit) comes to the common transmission line, the loop is exited (step 25), and the address is accounted (confirmed and registered) (step 26). Here, the wait cycle is repeated until it matches the address value of the address setting function of the own station (step 27). When the address value matches the own station address, a signal STB1 which is a start bit (Start Bit) is sent to Tout (step 28). Next, the address set value data is sent to Tout (step 29). Next, the sensitivity setting data processing step (step 30) is performed. Details thereof will be described with reference to the flowchart of FIG.

FIG. 20 is a flowchart according to an embodiment of automatic address recognition of the second slave station input unit or slave station input / output unit of the present invention.
In the figure, as in the previous figure, the following program is activated when the system is turned on. First, an input / output operation for not performing input / output in an undefined state is prohibited, and then initial data is written in the memory (step 31). Next, the Tin signal is monitored, and a start bit (Start Bit) is waited for. Therefore, the N-side wait cycle is repeated until a start bit (Start Bit) is not received. When a start bit (Start Bit) is received, the loop is exited (step 32), and the address set value data is received. (Step 33). Address setting value data is registered as an address value (step 34). Next, a signal STB1, which is a start bit, is sent to Tout (step 35). Next, data obtained by adding the address data width value to the address value is sent to Tout (step 36). Next, the sensitivity setting data processing step (step 37), the signal detection processing (step 38), and the error detection processing are performed. Details thereof will be described with reference to flowcharts of FIGS.

FIG. 21 is a flowchart according to the embodiment of the sensitivity setting data processing of FIG. 17 or 19 of the present invention. In the figure, following step 8 or step 29, the MCU 15 reads the sensitivity setting data, which is the output of the A / D converter 16, or the digital switch input data for sensitivity setting as the ADATA 26, and stores the read ADATA value in K1. (Step 40). Next, it is determined whether K1 is “0” (step 41). If K1 is "0", the sensitivity setting is performed with external setting data, so the K0 data is stored in K (step 41).
If K1 is not "0", the internal setting data is used for sensitivity setting, and the K1 data previously read from ADATA is stored in K (step 44).
A case where the setting data is performed by the switch input INS signal is shown by a broken line flow. In this case, if the INS signal is “1”, the internal setting data is used. If the INS signal 25 is not “1”, the sensitivity setting is performed by the external setting data, and the sensitivity setting is performed by the selection switch. Represents. Subsequently, a signal STB1 which is a start bit (Start Bit) is sent to Tout (step 45). Subsequently, the sensitivity setting data K is sent to Tout, and the data is transferred to the subsequent slave station input unit 12 or slave station input / output unit 12.

22 shows a flowchart according to an embodiment of the sensitivity setting data processing and signal detection processing of FIG. 20 of the present invention. In the figure, following step 21 or step 37, the MCU 15
Monitoring is performed until a signal STB0 which is a start bit (Start Bit) comes to Tin (step 47). When the signal STB0 which is a start bit (Start Bit) is received, sensitivity setting data is received (step 48). Next, the sensitivity data K is stored in K0 (step 49). The MCU 15 reads ADATA and stores ADATA in K1 (step 50).
Next, it is determined whether or not K1 is “0” (step 51). If K1 is “0”, the sensitivity setting is performed with the external setting data, so the K0 data is stored in Kc (step 53).
If K1 is not "0", the internal setting data is used for sensitivity setting, and the K1 data previously read from ADATA is stored in Kc (step 54).
When setting data is performed by a switch input INS signal, a broken line flow is followed. In this case, if the INS signal is “1”, the internal setting data is used. If the INS signal 25 is not “1”, the sensitivity setting is performed by the external setting data, and the sensitivity setting is performed by the selection switch. (Step 52).
Subsequently, the MCU 15 reads the ADATAS signal 29 and writes the ADATAS data to S (step 55).

  Subsequently, the process proceeds to a signal detection processing step. Here, it is determined whether the data S is equal to or greater than Kc (step 56). If the data S is equal to or greater than Kc, the on / off data that is an address value monitoring signal is captured (step 57), and if the data S is not equal to or greater than Kc, the on / off data that is the address value monitoring signal is captured (step 57). 58). Then, it continues to the B terminal of the flowchart.

FIG. 23 is a flowchart according to the embodiment of the error detection process of FIG. 20 of the present invention.
In the figure, an error signal is determined (step 59), and when an error signal is detected, an error data flag “1” is set at the memory address obtained by adding the bias data Z to the address value (step 60), and the error signal is detected. If not, the error data flag is set to “0” at the memory address obtained by adding the bias data Z to the address value (step 61).
Subsequently, a signal STB1, which is a start bit (Start Bit), is sent to Tout (step 62). Subsequently, K0 which is external sensitivity setting data is sent to Tout (step 63), and the flow returns to the flowchart terminal A.

1 is, for example, a host computer or a PLC (programmable logic controller), and a monitoring signal which is an input signal or a sensor signal between the control unit 1 and the master station 6 as a parallel signal. 5 is a transmission control system that exchanges control signals 4 and 5 for communication.
The master station 6 converts the parallel signal into a serial signal, and a plurality of management slave stations 12, slave station input units 12, via a DP signal line 7 and a DN signal line 8 which are common transmission lines. A transmission control system that communicates with the slave station input / output unit 12 is configured.
4, 6, and 8, each management slave station 12, slave station input unit 12, and slave station input / output unit 12 includes a power supply unit for obtaining power supply power of the local station from the transmission line, and the transmission line A circuit for extracting the clock signal (CK) from the CPU 18, a ROM 20 and a RAM 19 as storage elements, and an MCU 15 comprising a digital I / O port.

In the present invention, the management slave station 10 having its own address setting function counts from the address value set by the address setting function in the management slave station 10 and the start bit (Start Bit) transmitted from the master station 6. When the address counter data for starting the transmission coincide with each other, the movement timing signal (TDn timing signal 17) is sent to the individual signal lines for the slave station input unit 12 and the slave station input / output unit 12 cascaded after the management slave station 10. Output to TDn.
When the slave station input unit 12 and the slave station input / output unit 12 receive the movement timing signal (TDn timing signal 17) from the management slave station 12, the address counter data starts counting from the start bit (Start Bit). Is the address value of the slave station input unit 12 and the slave station input / output unit 12. When the slave station input unit 12 and the slave station input / output unit 12 have an address data width, the address data width occupied by the slave station input unit 12 and the slave station input / output unit 12 is added to the address value. When the added address counter data matches, the mobile station input unit 12 and the slave station input / output unit 12 to be connected next are output with a movement timing signal (TDn timing signal 17) to individual signal lines, thereby cascading. This is a transmission control system capable of sequentially recognizing addresses of the connected slave station input unit 12 and slave station input / output unit 12.

  In the system configuration, the management slave station 10 having the own station address setting function shown in FIG. 4 in the system configuration and the DP that is a common transmission line from the parent station 6 and the address value set by the address setting function. Slave station input unit cascade-connected to the management slave station when the address counter data starting counting from the start bit (Start Bit) of the transmission signal transmitted via the signal line 7 and the DN signal line 8 coincides 12. The address counter data is output to individual signal lines (cascade connection lines) to the slave station input / output unit 12, and the slave station input unit 12 and slave station input / output unit 12 receive addresses from the management slave station. The counter data is used as the address value of the slave station input unit 12 and the slave station input / output unit 12, or the slave station input unit 12 and the slave station input / output unit 12 add the slave station to the address value. When the address counter data obtained by adding the address data width occupied by the power unit 12 and the slave station input / output unit 12 is matched, the address counter data is transmitted to the slave station input unit 12 and the slave station input / output unit 12 to be connected next. Is transmitted to individual signal lines (cascade connection lines), and the address recognition of the cascade connected slave station input unit 12 and slave station input / output unit 12 can be performed sequentially.

  In the system configurations of FIGS. 1, 2, and 8, each is a slave station input unit 12 that is a plurality of detection heads that monitor the sensor unit of the controlled unit, and a slave station input unit 12 that is a plurality of detection heads, The slave station input / output unit 12 includes an A / D converter 16 that converts an analog signal for detecting the presence / absence of a detected object into a digital value, and the management slave station 12 includes a plurality of slave station input units 12, The slave station input / output unit 12 has a sensitivity setting function for determining the presence / absence of an object to be detected. The data obtained by A / D converting the analog value of the variable adjuster that is a sensitivity setting device or the digital data of the digital switch data is used as a sensitivity setting value through a plurality of signal lines (cascade connection lines) followed by a TDn timing signal 17. The plurality of slave station input units or slave station input / output units that have been sequentially transmitted to the slave station input unit or the slave station input / output unit and have received the TDn timing signal 17 transmit the sensitivity setting value and the detected object that have been transmitted. By comparing each A / D converter data for detecting the presence / absence of the detected object, the sensitivity setting unit for the plurality of slave station input units or slave station input / output units is managed. It is a transmission control system that can be performed in batch.

  In the present invention, in FIG. 4, FIG. 6, and FIG. 8, the data obtained by A / D converting the analog value of the variable adjuster that is a sensitivity setting device provided in the management slave station 12 is a specific data value (for example, “0 level”). The sensitivity setting value of the sensitivity setting unit in the management slave station 12 is selected or the sensitivity setting transmitted from the master station 6 to the management slave station 12 depending on whether the data value) matches or does not match. This is a transmission control system having a function for selecting a value.

Further, according to the present invention, the analog values of the variable adjusters, which are the sensitivity setting devices provided in the management slave station 12, the slave station input unit 12, and the slave station input / output unit 12 in FIG. 4, FIG. 6, and FIG. As to whether to use the A / D converted data, the sensitivity setting value of the sensitivity setting unit in the management slave station 12 is selected by turning the internal switch on “1” or off “0”, or This is a transmission control system having a function capable of selecting a sensitivity setting value transmitted to the station 12.
In this way, a transmission control system having a function of automatically selecting a sensitivity setting value or selecting it with a switch can be realized.

  Further, according to the present invention, a specific offset address value (Z) is added to the address group of the on / off detection data indicating the presence / absence of the detection body of the slave station input unit 12 and the slave station input / output unit 12 shown in FIG. Is used as a single or a plurality of groups of slave station input units 12 and slave station input / output units 12 as error data groups corresponding to the slave station input units 12 and the slave station input / output units 12. Thus, it is possible to realize a transmission control system in which a host system or a master station can easily grasp an error state by referring to an error data group.

  Further, according to the present invention, as shown in FIG. 16, a group of management slave stations 12, each slave station input unit 12 connected thereto, and a group of slave station input / output units 12 are DP signal lines 7 which are common transmission lines. And the transmission signal transmitted via the DN signal line 8 and the TDn timing signal 17 transmitted by the individual signal line (cascade connection line), the remote sensor terminal, the subsequent slave station input unit 12, the slave station input This is a transmission control system capable of setting an address address of the output unit 12 and a sensitivity adjustment value. As a result, the address setting work, sensitivity setting, and threshold setting of the individual slave station input unit 12 and slave station input / output unit 12 that are performed in the startup work after the installation of the system can be greatly simplified. Reduction and short-term startup.

  The present invention can be applied to the case of detecting the presence or absence of an object to be stored such as a semiconductor wafer, liquid crystal glass, or a glass epoxy substrate, or in a sensor system using a large number of photoelectric sensors. While saving wiring and downsizing, the address of the slave station input section and slave station input / output section following the management slave station is automatically set, and the sensitivity of the multistage sensor is adjusted, and the sensitivity data Delivery and sensitivity settings can be set at once. In addition, as a sensor system with a mechanism that can select between sensitivity adjustment at its own station or external sensitivity adjustment, sensitivity adjustment work is easy, and furthermore, it is widely used as a sensor system that can easily detect when an error occurs. Can be used.

It is a block diagram of a transmission control system according to an embodiment of the present invention. It is a block diagram of a sensor system according to an embodiment of the present invention. It is a timing signal connection diagram of the transmission control system according to the embodiment of the present invention. It is a functional block diagram of the management slave station which concerns on embodiment of this invention. It is a schematic diagram of the signal bus inside the management slave station according to the embodiment of the present invention. It is a block diagram of the data input of the management slave station which concerns on embodiment of this invention. It is a schematic diagram of the signal bus inside the management slave station according to the embodiment of the present invention. It is a block wiring diagram of a slave station input unit in the sensor system according to the embodiment of the present invention. It is a schematic diagram of the signal bus | bath of the management subunit | mobile_unit, a subunit | mobile_unit input part, or a subunit | mobile_unit input / output part in the sensor system which concerns on embodiment of this invention. It is a time chart figure of a signal at the time of operation of a management slave station, a slave station input unit, or a slave station input / output unit in the sensor system according to the embodiment of the present invention. It is a block diagram of the timing signal which concerns on embodiment of this invention. 4 is a data state diagram of a timing signal according to an embodiment of the present invention. FIG. It is a 2nd block diagram of the timing signal which concerns on embodiment of this invention. It is a memory map figure concerning the embodiment of the present invention. It is a detection signal figure in the sensor system concerning the embodiment of the present invention. It is a remote setting function figure of the management slave station which concerns on embodiment of this invention. It is a flowchart figure which concerns on embodiment of the automatic address recognition of the management sub_station | mobile_unit of this invention. It is a flowchart figure which concerns on embodiment of the automatic address recognition of the management slave station of this invention, a slave station input part, or a slave station input / output part. It is a flowchart figure which concerns on embodiment of the automatic address recognition of the 2nd management sub_station | mobile_unit of this invention. It is a flowchart figure which concerns on embodiment of the automatic address recognition of the 2nd sub_station | mobile_unit input part or sub_station | mobile_unit input / output part of this invention. It is a flowchart figure which concerns on embodiment of the sensitivity setting data process of FIG. 17 or FIG. 19 of this invention. It is a flowchart figure which concerns on embodiment of the sensitivity setting data process and signal detection process of FIG. 20 of this invention. It is a flowchart figure which concerns on embodiment of the error detection process of FIG. 20 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 2 Output unit 3 Input unit 4 Control signal 5 Monitoring signal 6 Master station 7 DP signal line 8 DN signal line 9 Sensor part 10 Management slave station 11 Sensor system
12 Slave station input section, slave station input / output section 13 Connection between slave stations 14 Address setting 15 MCU
16 A / D converter 17 TDn timing signal 18 CPU
19 RAM 20 ROM 21 I / O bus 22 CK signal 23 ADRS signal 24 Tout signal 25 INS signal 26 ADATA signal port 27 Tin signal 28 LED signal 29 ADATAS signal 30 PTH signal 31 Iout signal

Claims (7)

Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input unit or slave station input / output unit includes a power supply unit for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A management slave station with its own address setting function
When the address value set by the address setting function matches the address counter data that starts counting from the start bit (Start Bit) transmitted from the master station,
For the slave station input unit or slave station input / output unit cascade-connected after the management slave station, the movement timing signal is output to individual signal lines.
The slave station input unit or slave station input / output unit starts counting from a start bit (Start Bit) when it receives a movement timing signal from the management slave station or slave unit input unit or slave station input / output unit. When the counter data is the address value of the slave station, or when the slave station input unit or slave station input / output unit matches the address counter data obtained by adding the address data width occupied by the slave station to the address value Next, the slave unit input unit or slave unit input / output unit to be connected next, by sequentially outputting the movement timing signal to the individual signal line, address recognition of the cascaded slave station input unit or slave station input / output unit sequentially A transmission control system characterized by performing. Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input unit or slave station input / output unit includes a power supply unit for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A management slave station with its own address setting function
When the address value set by the address setting function matches the address counter data that starts counting from the start bit (Start Bit) transmitted from the master station,
Outputs address counter data to individual signal lines for the slave station input section or slave station input / output section cascaded after the management slave station,
The slave station input unit or slave station input / output unit uses the address counter data from the management slave station as the address value of the slave station input unit or slave station input / output unit, and the slave station input unit or slave station input / output unit. When the output unit matches the address counter data obtained by adding the address data width occupied by the slave station input unit or slave station input / output unit to the address value, the slave station input unit or slave station input / output unit to be connected next On the other hand, a transmission control system that outputs the address counter data to individual signal lines and sequentially recognizes addresses of cascade-connected slave station input units or slave station input / output units. Send and receive monitoring signals and control signals that are parallel signals between the control unit and the master station,
In the transmission control system, the master station converts the parallel signal into a serial signal and communicates with a plurality of management slave stations and slave station input units or slave station input / output units via a common transmission line.
Each management slave station and slave station input section or slave station input / output section has a power supply section for obtaining power supply power of the local station from the transmission line, a circuit for extracting a clock signal (CK) from the transmission line, and a CPU And a ROM composed of ROM and RAM as storage elements and a digital I / O MCU.
A slave station input unit or slave station input / output unit, each of which is a plurality of detection heads that monitor the sensor unit of the controlled unit, and a slave station input unit or slave station input / output unit that is a plurality of detection heads is detected An A / D converter that converts an analog signal for detecting the presence or absence of a body into a digital value, and the management slave station determines the presence or absence of a detected body with respect to a plurality of slave station input units or slave station input / output units. It has a sensitivity setting function for judging, and the data obtained by A / D-converting the analog value of the variable adjuster that is the sensitivity setting device or the digital data of the digital switch data as a sensitivity setting value through a plurality of slave stations Transmission is sequentially performed in cascade to the input unit or the slave station input / output unit, and a plurality of the slave station input units or slave station input / output units slave stations respectively detect the sensitivity setting value transmitted and the detected object. Compare with A / D converter data Transmission control system by detecting the presence or absence of the object to be detected, characterized by performing a batch a plurality of slave station input unit or the slave station output unit sensitivity settings in the management terminal station sensitivity setter. In claim 3,
The data obtained by A / D converting the analog value of the variable adjuster, which is a sensitivity setting device provided in the management slave station, matches or does not match a specific data value (for example, “0 level” data value), or the internal switch is turned on or A transmission control system having a function of selecting a sensitivity setting value of a sensitivity setting unit in a management slave station or selecting a sensitivity setting value transmitted from the master station to the management slave station by being turned off. In claim 3,
The data obtained by A / D converting the analog value of the variable adjuster, which is a sensitivity setting device provided in the slave station input unit or slave station input / output unit, matches or does not match the specified data value (for example, “0 level” data value). Select the sensitivity setting value of the sensitivity setting unit in the slave station input unit or slave station input / output unit by turning the internal switch on or off, or transmit from the management slave station to the slave station input unit or slave station input / output unit A transmission control system having a function of selecting a sensitivity setting value. In claims 1 to 5,
An address address obtained by adding a specific offset address value to the address address group of on / off detection data indicating the presence or absence of a detection object in the slave station input unit or slave station input / output unit is input to each slave station input unit or each slave station. A transmission control system comprising a single or a plurality of sensor terminals as error data groups corresponding to an output unit. In claims 1 to 6,
The control slave station and a group of slave station input units or slave station input / output units connected to it are located away via a transmission cable, and the address address setting and sensitivity adjustment value of the sensor terminal can be set remotely. A transmission control system characterized by enabling.

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