JPH08128557A - Solenoid valve control unit and solenoid valve controller - Google Patents

Abstract

PURPOSE: To provide a general purpose unit for an exciting circuit for a solenoid valve solenoid by which the number of wiring in a board can be reduced. CONSTITUTION: One half of a control switch block Ci is connected to a common power source connecting side terminal T11, while the other half is connected to a common power source connecting side terminal T12, and when circuit open/close controlling means Ai for excitation control of plural solenoid valve solenoids are arranged on both sides of the respective solenoid valve solenoids, each solenoid valve solenoid is connected between connecting terminals T2i and T3i', while between the terminal T11 and the terminal T12, power source voltage is impressed, and each solenoid valve solenoid is controlled by means of each circuit open/close controlling means Ai. Therefore, when the circuit open/close controlling means Ai for excitation control of plural solenoid valve solenoids is arranged on one side of each of the respective solenoid valve solenoids, each solenoid valve solenoid is connected between the connecting terminals T2i, T3i', while the terminals T11, T12 are short-circuited, and power source voltage is impressed between the terminals T11, T13, and each solenoid valve solenoid is controlled by means of each circuit open/close controlling means Ai in a solenoid valve controlling unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is arranged at the front end of a control device such as a programmable controller for collectively controlling the drive of a plurality of solenoid valves, and supplies the power for exciting a plurality of solenoid valve solenoids. The present invention relates to a solenoid valve control device itself that performs contact interface processing of a solenoid excitation control relay and a general-purpose unit for a solenoid excitation control circuit incorporated therein.

[0002]

2. Description of the Related Art In the FA-PA (Factory Automation-Process Automation) field, in order to efficiently and integrally control the operation of electrical equipment centering on control devices such as programmable controllers, and to integrate solenoid valve drive power supplies. For the purpose of achieving the above, it is common to construct an electromagnetic valve control board by consolidating the excitation control circuits of a plurality of solenoid valve solenoids in one place and collecting them as a board. FIG.
As shown in 3, these are programmable controllers 1
The solenoid valve is driven by turning on / off the relay contact of the excitation control circuit 1100 of each solenoid valve (800, 801, ...) Solenoid via the I / O module 1000 of 00. A facility (inverter drive, etc.) 101 other than the solenoid valve is controlled by a control program or the like incorporated in the programmable controller 100,
A series of sequence control is performed in cooperation with 102.

[0003]

However, the solenoid valve is different in whether the number of solenoids is single or double. In the case of a double solenoid, whether the drive position of the valve is 2 or 3 positions (positive / negative / neutral). There are various differences, etc. In the solenoid drive circuit, the excitation control relay contacts are arranged on both sides of the solenoid to ensure work safety (hereinafter referred to as the double cut circuit) and only one side is arranged for cost reduction. Both cases of the circuit configuration (hereinafter referred to as the one-side cut circuit) can be considered.
For this reason, in the prior art, it is not possible to standardize the in-board wiring pattern, and there is a problem in that each circuit component is assembled and wired each time the system is constructed, and there is a lot of in-board wiring work.

Also, for the sequence control program of the programmable controller, it is desirable that the program can be generalized if it is logically only necessary to logically specify the solenoid valve and to instruct its driving state. However, in reality, the solenoid valve solenoid is used. The driving I / O address and the number of output points of the connected relay contacts do not correspond 1: 1 with the logical command to the solenoid valve, and the correspondence is different each time the system is constructed. Even in sequence control, there is a problem in that programming must be performed every time with consideration for physical I / O addresses and bit patterns. Further, the operation of each solenoid valve can be patterned in a routine manner such that the drive command is switched by interlocking with the operation of another solenoid valve or by changing feedback information from a sensor such as a limit switch when the valve is driven. Although there is processing, there is a problem in that the processing load increases because all of these processing must be executed by the programmable controller. Therefore, a first problem to be solved by the present invention is to provide a solenoid valve control unit capable of forming a general-purpose unit for an exciting circuit of a solenoid valve solenoid capable of reducing wiring in a panel. An object of the present invention is to provide a solenoid valve control device that does not require consideration of physical I / O addresses, operating characteristics of individual solenoid valves, etc. on the side of a control program such as a programmable controller connected to the outside.

[0005]

In order to solve the above first problem, the solenoid valve control unit of the present invention is constructed by connecting a pair of circuit opening / closing control means Ai and circuit forced disconnection means Bi in series. Control switch block Ci (i = 1,
2, ... 2n; n is an integer of 1 or more), and at least one circuit forced disconnecting means D apart from the above,
Regarding half (i = 1 to n) of the control switch blocks Ci, one end is connected to the common power supply connection side terminal T11, and the other end is an individual solenoid valve solenoid connection side terminal T2i.
(I = 1, ... N), and similarly, the other half (i = 1 + n, ... 2n) of the control switch block Ci has one end connected to the common power supply connection side terminal T12.
The other end is an individual solenoid valve solenoid connection side terminal T3i '
(I '= 1 to n), the single circuit forced disconnection means D has one end as a power supply connection terminal T13 and the other end branched to form a plurality of solenoid valve solenoid connection side terminals T4j (j = 1 to 1).
m: m is an integer greater than or equal to 1 and does not exceed 2n). When the circuit opening / closing control means Ai for excitation control of a plurality of solenoid valve solenoids is arranged on both sides of each solenoid valve solenoid, Connect each solenoid valve solenoid to the connection terminal T2.
i and T3i ', and the power supply connection side terminal T
A power supply voltage is applied between 11 and T12 to control each solenoid valve solenoid by each circuit opening / closing control means Ai, and circuit opening / closing control means Ai for excitation control of a plurality of solenoid valve solenoids.
When arranging on one side of each solenoid valve solenoid, each solenoid valve solenoid is connected between the connection terminals T2i, T3i 'and T4j, and the power supply connection terminals T11 and T12 are short-circuited to connect the power supply connection terminals T11 and T13. A power supply voltage is applied between the circuit opening / closing control means Ai to control each solenoid valve solenoid.

Further, in order to solve the above-mentioned second problem, the solenoid valve control device of the present invention comprises a plurality of solenoid valve solenoids for controlling the excitation of the solenoids by consolidating the power supply systems to the solenoid valve solenoids.
It is composed of the above-mentioned solenoid valve control unit and a main processing unit that collectively manages control commands to the plurality of solenoid valve control units, and at least a control command device outside the apparatus and a plurality of solenoid valves to be controlled. And used in a system to which an external power supply for driving a solenoid valve is connected, and the main processing unit is triggered by a solenoid valve drive command from a control command device externally connected,
Based on the preset unique information of each solenoid valve,
Signal conversion from logical solenoid valve drive commands to physical solenoid excitation control I / O output addresses and bit patterns, and a series of patterned and pre-registered processing specific to the operation of each solenoid valve. It is provided with a means for executing.

[0007]

In the solenoid valve control unit of the present invention, the external power source for driving the solenoid valve is connected to the terminal T11 when the double cut circuit is supported.
And T12, and each solenoid of the solenoid valve is connected to corresponding T2i and T3i (i is one of 1 to n). On the other hand, in the case of supporting a one-sided circuit, the solenoid valve driving external power source is configured between terminals T11 and T13, between T12 and T13, or both, and each solenoid of the solenoid valve is connected to T4j (j is 1 to m). Or) and T
The required circuit configuration can be obtained by connecting either 2i or T3i (i is 1 to n) with a power source. In addition, since the circuit can connect multiple solenoids together,
Any of the double solenoids can be used as long as the terminals have a margin.

In the solenoid valve control device of the present invention, information on an arbitrary driving state for an arbitrary solenoid valve output from a control command device such as a programmable controller connected to the device is previously stored in the solenoid valve control device. The number of solenoids to be controlled and the number of relay contacts for the solenoids are determined based on the set solenoid valve information, and the physical I / O address and its output state are derived and I / O output is performed. In addition, the automatic drive of the solenoid valve that should operate in conjunction with another solenoid valve, for example, is performed by using this command as a trigger or by executing a series of pre-registered processing that is patterned according to the related state that changes indirectly. , It is possible to register sensor feedback such as limit switch corresponding to valve operation by patterning each solenoid valve and each signal change in advance, and processing related to solenoid valve control on the control command device side connected to the outside The load is extremely small.

[0009]

EXAMPLES The present invention will be specifically described below with reference to examples. FIG. 1 is a schematic configuration diagram of an internal circuit showing a configuration of a solenoid valve control unit of the present invention, and FIG. 2 shows a specific circuit configuration of a first embodiment corresponding to the internal circuit. 3 is a schematic outline drawing based on the embodiment of FIG. 2, FIG.
Is an application example to a double-cut circuit configuration using the embodiment of FIG.
FIG. 5 shows an example of application to the one-sided circuit configuration using the embodiment of FIG.

In each of the above figures showing the first embodiment, a portion corresponding to the circuit opening / closing control means Ai is a relay contact, and a portion corresponding to the circuit forced disconnection means Bi is a circuit breaker. Suffix is n =
4 and m = 8. Reference numeral 1 in the figure is connected to the drive coil of each relay Ai and is an external control device (I / O module, main processing unit (MPU), etc.)
It is a circuit portion that interfaces with (I / F) and can be realized by parallel signal input or serial transmission I / F, but since it is not a main constituent element of the present invention, its details are omitted. Reference numerals 2 and 2'represent external power supplies connected to T11, T12, and T13, which are supplied for exciting the solenoid valve solenoid. Sx (x is an arbitrary positive integer) indicates the solenoid portion of the solenoid valve. In the first embodiment, in the case of a so-called double-break circuit configuration in which relay contacts are placed at both ends of each solenoid of the solenoid valve, as shown in FIG. 4, a power source is connected between T11 and T12 and each solenoid is connected to T2i. And T3i, and in the figure, T21 and T3
A single solenoid solenoid valve S11 is connected between 31 and T
By connecting the single solenoid solenoid valve S12 between 22 and T32, and connecting the two solenoids of the double solenoid solenoid valve S13 at two locations between T23 and T33 and between T24 and T34, respectively, the corresponding A1 and A
A double-cutting circuit configuration is realized by two relay contacts each of 5, A2 and A6, A3 and A7, and A4 and A8. Further, in the case of a so-called one-sided circuit configuration in which relay contacts are placed only on one side of each solenoid of the solenoid valve, as shown in FIG. 5, the power source is connected between T11 and T13 and, if necessary, T1.
2 and T13 and connect each solenoid to T2i or T2
3i and T4j will be connected, and in the figure, T2
Between 1 and T41, between T31 and T42, between T22 and T43,
Single solenoid solenoid valve S2 between T32 and T44
1, S22, S23, S24 are connected, and T23 and T
The two solenoids of the double solenoid solenoid valve S25 are connected between 45 and between T33 and T46, and T24 and T47 are connected.
Double solenoid solenoid valve S between valve T34 and T48
By connecting two solenoids of 26, a one-sided circuit configuration having one relay contact for each solenoid is realized.

FIG. 6 shows a second embodiment of the solenoid valve control unit of the present invention.
Of the present invention, and particularly shows an application example of a one-side cut circuit configuration. The difference from the first embodiment shown in FIG. 2 is that the single circuit forced disconnection means (circuit breaker), which is a component of the invention, has only one system D or two systems D and E. Is. In the second embodiment, one end of the circuit breaker D is the power supply connection terminal T13, but the other end is T41, T43, T45, T4.
It is branched into 4 of 7. On the other hand, circuit breaker E
Has one end as a power supply connection terminal T14 and the other end as T42, T
There are four branches, 44, T46, and T48. In the case of this embodiment, there is substantially no difference in the case of adopting the double-cut circuit configuration. In the case of the one-sided circuit configuration, as shown in the figure, two independent power supply systems 2 and 2 ′ are connected between T11 and T13,
By connecting and using between T12 and T14, each has two electrically independent 2 solenoids.
A system circuit can be constructed.

FIG. 7 shows a third embodiment of the solenoid valve control unit of the present invention.
Of the present invention, and particularly shows an application example of the double-cut circuit configuration. The difference from the first embodiment shown in FIG. 2 is that the number of terminals T4j divided into a plurality of parts of the circuit breaker D is increased by one point and branched as T49. Moreover, this terminal is not used for connecting solenoid valves. In the case of this embodiment, there is substantially no difference when the one-sided circuit configuration is adopted. A configuration equivalent to that shown in FIG. 4 is also possible in the case of adopting a double-cut circuit configuration, but as shown in FIG. 7, the power source 2 is connected to T11 and T13.
By further shorting T49 and T12 with the short-circuit wiring 4 ', a circuit breaker which is not used in the double cut circuit configuration in the first embodiment can be incorporated in the circuit, and the entire solenoid for the power supply 2 can be incorporated. It is possible to add circuit protection to In this description, the terminal T49 is separately added to clarify the use of each terminal, but any of T41 to T48 can be used for the above use.

FIG. 8 shows a fourth embodiment of the solenoid valve control unit of the present invention.
9 shows an example of application to the double-sided circuit configuration, and FIG. 10 shows an example of application to the single-sided circuit configuration. The difference from the first embodiment shown in FIG.
The point is that the surge absorbers 51 to 58 are incorporated in the connection terminals of the solenoid. In the present embodiment, half of the surge absorbers 51 to 54 are connected between T2i and the new terminal T5i (i =
1 to 4). Further, half of the surge absorbers 55 to 58 are T42, T44, T46, which are half of the terminals T4j branched from the single circuit breaker D.
Connect between T48 and new terminals T55 to T58. The solenoid can be connected in parallel with the surge absorbers 51-58. In the case of adopting the double cut circuit configuration in this embodiment, as shown in FIG. 9, the external power source 2 is connected to T11 and T1.
2 and each solenoid of solenoid valves S51-S54 in parallel with the surge absorbers 51-54.
21 and T51, T22 and T52, T23 and T53
, T24 and T54, and T51 and T31
, T52 and T32, T53 and T33, T54 and T
It is realized by short-circuiting between 34 with short-circuit lines 41, 42, 43, 44. On the other hand, in the case of adopting the one-sided circuit configuration in the present embodiment, between T11 and T13, and if necessary, T
12 and T13 to connect the solenoids of the solenoid valves S61 to S68 in parallel with the surge absorbers 51 to 58 respectively between T21 and T51, between T22 and T52, between T23 and T53, between T24 and T54, and between T55 and T55. Between T42, T5
6 and T44, T57 and T46, T58 and T48, and T51 and T41, T31 and T55,
Between T52 and T43, between T32 and T56, T53 and T45
, T33 and T57, T54 and T47, T34 and T
58 between the short-circuit lines 41, 42, 43, 44, 45, 46,
It is realized by short-circuiting at 47 and 48.

Finally, an embodiment of a solenoid valve control device using the solenoid valve control unit will be described. FIG. 11 is a system configuration diagram of an embodiment of a solenoid valve control device of the present invention, and FIG. 12 is an MPU 30 which is one component of the invention.
0 is an internal block diagram of 0, FIG. 14 is a structural example of electromagnetic valve drive command data that the MPU 300 receives from the external programmable controller 100, and FIG. 15 is a built-in electromagnetic valve control unit 400 under the control of the MPU. 16 is an example of the configuration of output command data for turning ON / OFF each of the relay contacts that are set, and FIG. 16 is an I / O unit 600 that captures the states of limit switches 900, ... 17 is an example of input data to the MPU 300 from FIG. 17, FIG. 17 is an example of a solenoid valve unique information database given to the solenoid valve information holding unit 304 inside the MPU 300, and FIG. 18 is a solenoid valve unique information given to the solenoid valve information holding unit 304. FIG. 19 is an example of an output pattern database for each information, and FIG. 19 shows a solenoid control process in the execution control unit 301 inside the MPU. A main flow chart of the flow, FIGS. 20 to 22 is a detailed flow chart that comes to this. First, the system configuration will be described with reference to FIGS. 11 and 12, then the flow of rough information regarding the data in FIGS. 14 to 18 will be described, and finally the detailed operation will be described centering on the flow in FIGS. 19 to 22. To do.

In FIG. 11, reference numeral 200 denotes an electromagnetic valve control device according to the present invention, which is connected to a programmable controller 100 placed outside through a transmission path 105, and a solenoid valve solenoid drive power source 700 is pulled in. There is. The inside of the solenoid valve control device 200 is the MPU 300.
.., a small-scale 1 / O unit 600, and a main breaker 500 corresponding to the receiving side of the external power source 700. In the figure,
The electromagnetic valve control units 400, ... And the MPU 300 and the I / O unit 600 are connected in a bus shape, but in actuality, they may be connected in a star shape around the MPU 300, and the connecting line is The input / output signals may be transmitted as parallel signals or may be transmitted serially. MPU
The signal data output from 300 to each solenoid valve control unit 400 is output command data for driving a relay as shown in FIG. 15, and turns on / off each relay contact Ai in the solenoid valve control unit. It is an OFF control. These are associated with the drive coils of each relay circuit Ai through the control device I / F circuit 1 of FIG. 2, for example. The signals exchanged between the MPU 300 and the I / O unit 600 have the data structure shown in FIG. 16, and the DI from the limit switches 900, 901, ... Attached to the mechanical system at the site for each solenoid valve. This is input information (discrete input = input information in bit units). The interface portion on the MPU side that receives and outputs the relay driving output information and DI input information is the I / O interface section 303. Each solenoid valve control unit 40
For 0, ..., In addition, the external power source 700 supplied through the main breaker 500 is pulled in, and the power source connection side terminals T11, T12, T1 are provided corresponding to the double-cut / single-cut circuit configuration.
Wiring to 3. In addition, each solenoid valve 800, 801, ...
.. are wired to the respective solenoid connection side terminals T2i, T3i ', T4j, etc. according to the solenoid configuration and the like.

FIG. 12 shows the internal structure of the MPU 300. The MPU 300 controls the drive of the solenoid based on the external control device interface unit 302, the above-mentioned I / O interface unit 303, the solenoid valve information holding unit 304 that holds solenoid valve unique information, and the information input through these. It is composed of a control unit 301. The solenoid valve information holding unit 304 holds the unique information of each solenoid valve shown in FIGS. 17 and 18, the output pattern information common to the solenoid valves, and the like. Originally, this information is assumed to have been set in advance from the outside. The means for externally registering this information in the solenoid valve information holding unit 304 is not a main constituent element of the present invention, and therefore its explanation is omitted. The external control device interface unit 302 receives the drive command corresponding to the solenoid valve as shown in FIG. In addition, in the entire system, as shown in FIG. 11, each dry device is connected to the transmission path 105 centering on the programmable controller 100. For example, the inverter drives 101 and 102 and the solenoid valve control device 20 are connected.
0 is connected, and the motors 103, 10 are subordinate to it.
4 and solenoid valves 800, 801 etc. are connected or limit switches 900, 901, etc. are connected with detectors, etc., and this information is centrally managed by the control program installed in the programmable controller, and the system is controlled. It is assumed that a well-controlled control is realized as a whole.

Next, the flow of information in the entire system will be described. The solenoid valve drive command transmitted from the programmable controller 100 is received by the MPU 300 of the solenoid valve control device 200 via the external control device interface unit 302 via the transmission path 105. This drive command is shown in Figure 1.
4 has a structure as shown in FIG.
Bit) is assigned for control of 1 solenoid valve, of which the 0th bit is for depolarization (energization), the 1st bit is for positive (energization), the 2nd bit is for double solenoid 3 position solenoid valve It is a neutral order. In the programmable controller, this is used and the state to control the solenoid valve is commanded by changing the corresponding bit from 0 to 1. In this way, the drive command for each solenoid valve received by the MPU is processed by the execution control unit 301 according to the respective flowcharts of FIG. 19 and thereafter, and various databases (FIGS. 17, 1) in the solenoid valve information holding unit 304 are processed.
Based on 8), it is converted into the relay contact opening / closing address of each solenoid valve control unit and its output bit pattern.
I / O interface section 30 as bit information in the form of
3 corresponding solenoid valve control units 400, 4
01, ... Each solenoid valve control unit 40
0, 401, ... Turns on / off the corresponding relay drive coil of its own unit by the control device I / F circuit 1 to the instructed state, and as a result, the corresponding terminal (T2i, The solenoid of each solenoid valve connected to (T3i, T4j) is excited to a predetermined state. Further, when the mechanical upper and lower limits due to the driving of the solenoid valve are detected by the sensors such as the limit switches 900, 901, ..., These information are taken into the I / O unit 600, and this information is It is taken into the execution control unit 301 through the I / O interface unit 303,
As a result, the flow of processing is such that sequence control is performed according to the limit switch change processing pattern of the solenoid valve specific information data structure defined for each solenoid valve in the solenoid valve information holding unit 304.

A description will be additionally given for each of the above data structures. The drive command from the programmable controller shown in FIG. 14 is as described above, but the relay drive instruction pattern to the solenoid valve control unit of FIG. 15 assumes the solenoid valve control unit of the first embodiment of FIG. One word (16 bits) is assigned to each solenoid valve control unit, and each bit is for relay A1 in order from the 0th bit,
For A5, A2, A6, A3, A7, A4, A
Corresponds to 8 contacts for 8, 0 for contact OFF, 1 for ON
It is shown that it is. According to the figure, the first word is an instruction to the solenoid valve control unit 400 of FIG.
The second word corresponds to 401, .... DI from the limit switch shown in FIG.
Input allocation takes an area of 2 bits for each solenoid valve, the lower bit indicates the upper limit (active limit) of the solenoid valve,
It is assumed that the upper bit indicates the lower limit (exit limit) of the solenoid valve, and that the bit map is such that areas are fixedly secured in the solenoid valve connection order even if the solenoid valve does not have a limit switch.

FIG. 17 shows a solenoid valve unique information database held in the solenoid valve information holding section 304, which is data for each record for each solenoid valve actually connected. The contents of this record are: (1) Solenoid valve No. , (2) Solenoid valve proper name, (3) Solenoid valve control unit identification serial number that belongs as solenoid valve unique information. , (4) Solenoid drive relay circuit configuration (double cut / single cut), (5) Number of solenoids of solenoid valve (single / double), (6) Valve when double solenoid is shown in (5) above. Number of drive positions (2 positions / 3 positions), (7) Corresponding output bit position in the relay drive instruction pattern of FIG. 15 for driving the solenoid valve (one solenoid valve requires a plurality of relay drives. (8) the least significant bit position in the corresponding bit string), (8) the corresponding bit position on the DI input word of FIG. 16 showing the DI input from the limit switch for the solenoid valve, (9) the other electromagnetic An interlocking flag indicating whether or not the solenoid valve is automatically driven in conjunction with being driven by the valve, (10) No. of the solenoid valve referring to the operation when there is an interlocking operation. , (11) Pattern N of the processing sequence executed when the limit switch changes
o. Shall consist of Here, the solenoid valve No. Figure 1
4 corresponds to the word arrangement of the drive command from the programmable controller and also corresponds to the bit arrangement of the limit switch information of FIG. 16, which is further connected to the solenoid valve control unit in the solenoid valve device. It also corresponds to the connection order of the solenoids (solenoid valves). 18 is similar to FIG. 17, the solenoid valve information holding unit 304
Although the database is stored in the above, it is common information regardless of the individual solenoid valves, and is for each solenoid valve classification pattern (4), (5), (6) in the solenoid valve specific information section of FIG. To
15 is a diagram showing output bit patterns for each solenoid valve for driving the relay of the solenoid valve control unit, and converts the bit pattern of the drive command of the solenoid valve of FIG. 14 into the output bit pattern to the corresponding relay of FIG. 15. It is used at the time.

Finally, referring to FIG. 19, the execution control unit 301
The details of the processing in step 1 will be described. As shown in FIG. 19, in the control execution unit, by comparing and collating the drive command data of the solenoid valve received from the (2000) programmable controller 100 with the data at the time of the previous reception, the command bit to each solenoid valve (positive, negative, It is detected whether any of (neutral) has changed from 0 to 1. (2001)
If there is a change (2004), "solenoid valve drive processing" (FIG. 20) is sequentially performed on all the changed solenoid valves, and (2)
(001) If there is no change, then (2002) change detection of the limit switch is performed. The information of the limit switch is the data shown in FIG. 16 which is collected by the I / O unit 600 and received through the I / O interface section. This also compares or collates the previously collected data with the currently collected data or outputs the data. 0 to 1 by taking the logical OR
Alternatively, a bit change from 1 to 0 is detected. (200
3) If there is a change (2005), "LS change process" (FIG. 21) is sequentially performed on all solenoid valves corresponding to the changed limit switches. The process ends. The execution control unit 301 repeatedly executes the above flow in a predetermined cycle.

In the above-mentioned "solenoid valve drive process" which is started by a bit change of the solenoid valve drive command, as shown in FIG. 20, first, as shown in FIG. Is calculated from the word address of the drive command data shown in FIG. 14, and a 3-bit command pattern corresponding to the command this time is taken out from the word address. Since only one of the negative, positive, and neutral bits of this command pattern has changed from 0 to 1 this time, the command content this time can be obtained. That is, if it is a negative command (0, 0, 1), if it is a positive command (0, 1, 0), if it is a neutral command (1,
It is a bit pattern of either 0, 0). Then (21
01) Solenoid valve No. Solenoid valve specific information corresponding to ((4)
(6))-(7) The output start address is obtained from the solenoid valve unique information database (FIG. 17) held in the solenoid valve information holding unit 304, and (2102) this solenoid valve unique information (4) to (6). By comparing the 3-bit drive command pattern obtained in (2100) with the output pattern database for each solenoid valve specific information, the number of bits and the output to be set as relay drive instruction information (FIG. 15) to the solenoid valve control unit You can get a bit pattern. For example, the solenoid valve No. If it is a positive command (0, 1, 0) for 2, the solenoid valve specific information is double-cut, double solenoid, 3 position (1, 1, 1) data, so the obtained output bit pattern is ( 1, 1, 0, 0),
The bit position for setting this data is 4 bits from the 3rd bit of the relay drive instruction pattern, that is, the relays A3, A7, A4, A8 of the first solenoid valve control unit are turned OFF, OFF, ON, ON in order. I mean.
When the relevant bit is updated according to the output start address and output bit pattern for the relay drive instruction pattern data thus obtained (2103), the content is distributed to each solenoid valve control unit by the I / O interface unit 303, and the designated bit is designated. The solenoid of each solenoid valve is driven by the pattern. Furthermore, in this embodiment,
It is designed to control the interlocking operation of multiple solenoid valves,
(2104) Solenoid valve specific information database (9) Interlock flag column and (10) Reference solenoid valve No. The column is checked for all solenoid valves, the solenoid valve flag is ON, and the reference solenoid valve No. Is processing solenoid valve No. It is checked whether or not there is a record matching with, and if there is a corresponding record, the same "solenoid valve drive process" as above is performed for the corresponding solenoid valve.

The above-mentioned "processing at the time of LS change" which is started by the change of the DI input bit from the limit switch is shown in FIG.
As shown in FIG. 1, the solenoid valve No. of the solenoid valve to be processed in (2200). 16 is calculated from the bit address of the DI input data shown in FIG. 16, and (2201) the calculated solenoid valve No. Solenoid valve specific information database corresponding to (Fig. 1
The (11) limit switch change processing pattern data in the corresponding record of (7) is taken out, and (2202) the processing pattern No. Call and execute the processing sequence corresponding to. The plurality of patterned processing sequences are
It is assumed that the execution control unit 301 has been registered in advance. FIG. 22 shows an example of the processing pattern. In this example, (2
300) Check whether the changed bit is the limit switch indicating the upper limit, and if so (2302), the corresponding solenoid valve drive command is considered to be neutral, and the "solenoid valve drive process" is executed. (2301) If the changed bit is a limit switch indicating the lower limit (231)
03) Similarly, the corresponding solenoid valve drive command is regarded as neutral, and the "solenoid valve drive process" is executed.

[0023]

As described above, according to the present invention, in the invention relating to the solenoid valve control unit, the power supply for controlling the solenoid valve is integrated, and the difference between the control circuits such as the double cut circuit / single cut circuit and the like. It is possible to provide a solenoid valve control unit that can deal with the differences in the solenoid configurations of individual solenoid valves, etc. only by properly using the terminal wiring of the external device, and save wiring within the panel. There is an effect that can be. Further, in the invention relating to the solenoid valve control device of the present invention, in the solenoid valve control device inside the solenoid valve control device, patterning is performed in end processing such as associating individual physical output addresses and output bit patterns for solenoid valve driving and solenoid valve control. By automating a typical process that can be implemented, the programmable controller side only needs to command the logical identification number of the solenoid valve and the logical drive state, which not only reduces the processing load on the controller side. There is an effect that the diversion property of the processing logic can be improved without the need. At this time,
Since the solenoid valve control unit according to the present invention is used, it is possible to easily form the relay drive instruction data to the solenoid valve control unit and the internal data such as the output bit pattern thereof.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an internal circuit of a solenoid valve control unit according to the present invention.

FIG. 2 is a schematic configuration diagram of an internal circuit of a first embodiment of a solenoid valve control unit.

FIG. 3 is a schematic external view of the first embodiment.

FIG. 4 is a block diagram of a double-side cutting circuit according to the first embodiment.

FIG. 5 is a configuration diagram of a one-side cutting circuit according to the first embodiment.

FIG. 6 is a half-cut circuit configuration diagram of a solenoid valve control unit according to a second embodiment.

FIG. 7 is a block diagram of a double-cut circuit according to a third embodiment of a solenoid valve control unit.

FIG. 8 is a schematic configuration diagram of an internal circuit of a solenoid valve control unit according to a fourth embodiment.

FIG. 9 is a block diagram of a double-sided cutting circuit according to the fourth embodiment.

FIG. 10 is a block diagram of a one-side cutting circuit according to the fourth embodiment.

FIG. 11 is a system configuration diagram of an embodiment of a solenoid valve control device according to the present invention.

FIG. 12 is an internal block diagram of the MPU 300.

FIG. 13 is a system configuration diagram according to a conventional technique.

FIG. 14 is a drive command data structure diagram from a programmable controller.

FIG. 15 is a diagram of a relay drive instruction pattern for an electromagnetic valve control unit.

FIG. 16 is an explanatory diagram of an example of DI input allocation from the limit switch.

FIG. 17 is a structural diagram of a solenoid valve unique information database.

FIG. 18 is a structural diagram of an output pattern database for each solenoid valve specific information.

FIG. 19 is a main processing flow of the execution control unit 301.

FIG. 20 is a solenoid valve drive processing flow.

FIG. 21 is a processing flow when the limit switch state changes.

FIG. 22 is an explanatory diagram of an example of a processing pattern when the limit switch state changes.

[Explanation of symbols]

Ai: Circuit opening / closing control means (relay etc.) Bi: Circuit forced disconnection means (circuit breaker etc.) Ci: Control switch block consisting of a pair of Ai and Bi D: Circuit forced disconnection means independent of Ci T11, T12, T13 , T14 ': External power supply connection terminals T2i, T3i: Solenoid connection terminals extending from the control switch block Ci T4j: Solenoid connection terminals extending from the circuit forced disconnecting means D T5i: Solenoid connection terminals Sx extending from the surge absorber : Solenoid valve (solenoid part) 1: For controlling coil of relay Ai, control equipment I / F circuit 2: External power supply to solenoid valve control unit 4: Terminal short-circuit wiring 51, 52, ...: Surge absorber 100: Programmable controller 101-104: Controlled by inverter, motor, etc. Device 105: Transmission line between control devices 200: Solenoid valve control device 300: MPU 301: Execution control unit 302: External control device interface unit 303: I / O interface unit 304: Solenoid valve information holding unit 400, 401, ... : Solenoid valve control unit 500: Main circuit breaker 600: I / O unit 700: External power supply to solenoid valve control device 800, 801, ...: Solenoid valve 900, 901, ...: Limit switch 1000: I / O module 1100: Conventional individually wired solenoid valve solenoid drive circuit 1200: Terminal block

Claims (2)

[Claims] 1. A control switch block Ci (i = 1, 2, ... 2n; n is an integer of 1 or more) constituted by connecting a pair of circuit opening / closing control means Ai and circuit forced disconnection means Bi in series. In addition to the above, at least one circuit forced disconnecting means D is provided, and one half of the control switch blocks Ci (i = 1 to n) has one end connected to a common power supply connection side terminal T11 and the other end. Is an individual solenoid valve solenoid connection side terminal T2i (i = 1, ..., N), and similarly, the other half (i = 1) of the control switch block Ci.
+ N, ... 2n), one end is connected to the common power supply connection side terminal T12 and the other end is an individual solenoid valve solenoid connection side terminal T3i ′ (i ′ = 1 to n), and the independent circuit is forced. One end of the disconnecting means D is a power supply connection terminal T13 and the other end is branched and connectable to a plurality of solenoid valve solenoid connection side terminals T4j (j = 1 to m: m is an integer of 1 or more and not exceeding 2n). When the circuit opening / closing control means Ai for controlling the excitation of a plurality of solenoid valve solenoids is arranged on both sides of each solenoid valve solenoid, each solenoid valve solenoid is connected between the connection terminals T2i and T3i 'and A power supply voltage is applied between the power supply connection side terminals T11 and T12 to control each solenoid valve solenoid by each circuit opening / closing control means Ai, and each circuit opening / closing control means Ai for excitation control of the plurality of solenoid valve solenoids is controlled. If you place on one side of the solenoid valve solenoid wherein each solenoid valve solenoid connection terminal T2i, T
3i ′ and T4j, and the power source connection side terminals T11 and T12 are short-circuited to connect the power source connection side terminals T11 and T1.
A solenoid valve control unit having a configuration in which a power supply voltage is applied across three to control each solenoid valve solenoid by each circuit opening / closing control means Ai. 2. A plurality of solenoid valve control units having the structure according to claim 1, wherein the power supply systems for the plurality of solenoid valve solenoids are integrated to control the excitation of the solenoids, and the solenoid valve control units are connected to the plurality of solenoid valve control units. It is composed of a main processing unit that collects control commands and is used in a system in which at least a control command device, multiple solenoid valves to be controlled, and an external power source for driving solenoid valves are connected outside the main unit. The solenoid valve drive command from the control command device connected to the outside in the processing unit is used as a trigger, and based on the preset unique information of each solenoid valve, the logical solenoid valve drive command is used to control the physical solenoid excitation control. Signal conversion to I / O output address and bit pattern, and patterning unique to the operation of each solenoid valve is registered in advance. An electromagnetic valve control device comprising means for executing the series of processes described above.