TWI304931B - Multiple mode communication interface for plc expander and host and method for operating the same - Google Patents

Description

'ό(, 1304931 V. INSTRUCTION DESCRIPTION (1) Technical Field of the Invention A multi-mode communication interface device of a PLC expansion machine and a host computer, and an application method thereof, especially a general or special expansion machine, The multi-mode and multi-mode expansion machines are connected in a serial number expansion mode, a special expansion machine string, a parallel expansion mode, and the like, and the I/O point of the demand can be set through the integrated circuit of the communication interface. The number of extended PLC expansion machines and the host's multi-mode connection communication interface, in order to improve the communication method and 1 / 0 point expansion need to be separately made for different hardware design issues. ^Previous technology] It is known to be applied to the operation control of external devices. The programmable controller (pL, Programmable Logic_c〇ntr〇Uer) is controlled by its external "end-end Λ 聚 或 or device' to cooperate with the programmable controller internal editing spear-type external operation control, but The number of external I/O terminals of the programmable controller is fixed. If you want to connect to the device or device operation control, you must expand the number through each type. Bit or analog 1/0 terminal. 尔充机连夕, s又 i I know the programmable controller (PLC) host and expansion machine connection charger connection signal and data output unit 1 5, 16 connection circuit structure The transmission point C1 to C6 circuit 1' is transmitted to the host through the transmission points C1 to C6, or the upper and lower stages. The control circuit 1 is also in turn, and the communication between the host and the expansion unit is included. Point ci, mainly ΙΝΡϋτ page 6 1304931

DATA transmission, point, to execute the expansion machine χ input point signal, together with the next level χ input point, the number is transmitted back to the host; transmission point C2, mainly the timing pulse wave (cL 〇 CK signal) transmission point 'from the host to the expansion The timing pulse of each part of the machine; the transmission point C3, the main + is the 0UTPUT DATA transmission point, to execute the output point data 'all expansion machine γ output point data transmitted by the CPU operation; the transmission point C4, mainly the trigger signal (P/S & STR〇BE) transmission point, so that the expansion machine inputs/outputs 7G pieces to change the trigger signal of the serial/parallel state; transmission point C5 mainly allows the output signal (0UTPUT ENABLE) transmission point to be maintained after the initialization action The Normal High state; and, the transmission point C6, is mainly the connection control signal (CONTR〇L SIGN) transmission point, and remains in the Normal High state after the initialization operation. As for the logic and circuit 1 1 , i 2 , 1 3 , and 14 of the above-mentioned controlled circuit 1, the first logic determining circuit 1 1 'is mainly performing pulse wave determination 'accepting transmission points C2 and C6 Signal input, using the control signal (CONTROL SIGN) level change inputted by the transmission point C6, to allow the timing pulse wave transmitted by the host to reach the expansion machine input/output unit via the circuit; the first logic determining circuit 12, It is judged by the expansion machine Y output point data 'Using the transmission points C3, C6 and the output unit 16 to output the data + signal' according to the control signal input at the transmission point C6 (CONTROL SIGN stomach level change) control the remaining expansion machine output data Passing to the fourth logic judging circuit 14 and the next-stage expansion machine; the third logic judging circuit 13 is mainly for performing the expansion machine X input point data judgment, using the transmission point C6, the m X input point signals Xm of the expansion machine And when C6 = l, Xm is transmitted back to the host or the signal of the previous level via the transmission point C1, C6.C3 + nT + C6 .C3, to pass the transmission point

Page 7 l3〇4931

Friends, invention description (3) - C 6 wheel control signal (CONTROL SIGN) level change, control expansion machine input signal through the third logic judgment circuit 1 3 back to the previous level expansion ^ host; The fourth logic judging circuit 1 sighs the connection ages 4 1 and C2 螂 to determine whether the next-stage expansion machine is connected, and transmits the X-ray information of the transmission point machine and the data to the next-stage expansion machine. The next stage expansion t into the k number is also transmitted back to the previous second logic judging circuit 13 via the fourth logic judging circuit 14.

When the PLC host and the expansion unit are connected, the initialization action (Initial) needs to be performed through the expansion machine and the right-hand circuit to confirm the main point detection, and the connection is normal and the connection is correct, and then The expansion machine digits <receiving the defeat, according to the above-mentioned conventional expansion machine communication interface and logic judgment points: go, 'must be extended by hardware designers according to different I / 0 points at the same time, on the main ^ hardware The matching design takes more time, and the time spent is soft;; when counting the expansion of the digital position, it also uses the pulse wave of the long string to form a waste of time cost. When using the expansion unit to display the value on the multi-segment display, it needs to be simulated at 1/0 point on the expansion machine hardware.

In other words, it is also necessary to write the corresponding procedure. It is quite inconvenient, and the designers who change the sink and the expansion end must design the hardware communication method again, resulting in double time waste. $10 The extensions connected to the host are not all: expansion of the connection host and non-digit, or other software designers need to communicate with the host software designer, =

1304931

Page 9 1304931 V. Invention Description (5) A memory single communication medium, including: a pre-level connection - with at least one decision, a post-stage connection with a judgment module, a first set of cooking and itching; reading Take the output; a hardware model in the initial interpretation value and the conversion output positioning value selection material access; a slave-end type, to connect the I expansion machine to record an input control second setting with a round of control second The connection is connected to the microprocessor by using a continuous transition control unit; the surface is connected to the microprocessor, and has an integrated circuit junction module, connected to the host, or the upper expansion machine, and the module is broken to match different types. The expansion machine is connected to the identification setting module, and is connected to the next-stage expansion machine, and is provided with at least an extension connection setting for different types of extensions; a fixed connection module and a second setting connection module for setting I /0 point expansion and external connection, execute the data type setting connection module, set the expansion type to be connected to the host, obtain the positioning position of the host or the upper output, and send it to the next level expansion machine. And according to the location of the host can be connected, or through the memory unit to carry out the mode connection module, with the expansion of the model and the connection of the mode light 7L scan output display the status of each number of points, recall the unit temporary data access; Controlling the first setting connection module and the - module's greedy reading wheel; and controlling the data output of the first setting connection module and the module; the enabling signal (SH), Connect the host in a single line,

Page 10 1304931 941480«!

V. Invention description (6) or trick: Ϊ adjacent expansion machine 'to improve the communication control speed; number signal; ° ^ The above hardware mode setting connection module connection generates the meter group, 各 各 each Si to the communication interface The circuit and its majority are connected to the main 2: the same: the expansion mode and its communication connection mode, to the output of the integrated circuit - the expansion of the machine to form a communication link 'and use the pin; the host is in the beginning! The group sets 1/〇 points expansion according to the demand-group signal to judge the heart machine]: J-pass::: Read a certain-determination model kidney machine, each expansion machine, h into 'quantity, and rotate a positioning value to expand Information sent by the host: bit value, automatically allowed or isolated. The second party enters the data access temporarily stored in the memory unit. [Embodiment] The technical content and detailed description of the present invention are in line with the multi-wedge H t5 diagram of the drawing machine. Plc expansion machine and main unit and circuit block-咅5ίι interface device structure, integrated circuit pin map as shown: the invention · expansion machine and - communication interface device includes: - host 2 and at least machine 3 The extension of the expansion interface 3' of the internal communication interface 3' is connected to the communication expansion machine of the host 2, and the different serial and parallel mode blood can be used according to the expansion mode. Forming a series of digital tanks between expansion machines

And so many mode applications even ‘hardware set according to demand 1304931

« I —---- cable number 94146081_ year, month and day five, invention description (7) charging mode, special expansion machine series parallel expansion mode connected 'and can be set through the communication interface 3 1 link module I / O points expansion. The host 2 includes at least a communication interface 2 1 and a microprocessor 2 2 , and the communication interface 21 is the same integrated circuit design as the communication interface 31 of the expansion machine 3 as a host end product. The body circuit forms a hard-set expansion type, capacity communication interpretation, and output positioning value to the majority of the expansion machine 3 for positioning and data access control. The expansion machine 3 mentioned above comprises: a communication interface 31 connected to the host 2 or the upper or lower level expansion machine 3; / the microprocessor 3 2 ' is connected to the communication interface 31; and a memory unit 3 3 The microprocessor 32 and the communication interface 31 are connected to perform bidirectional data access with the host 2. The memory unit 33 is preferably a dual output design having a first output terminal 3 31 and a second output terminal 3 3 2 . The communication interface 3 1 is a hardware-designed integrated circuit 'and defines various expansion modes and a plurality of sets of connection modules that are uniformly applicable' package: a pre-connection module 3 1 1 , To connect the host 2 or the upper expansion machine 3, and at least one judgment module (D_inst0~2) is provided to match the connection and identification settings of the different type expansion machines 3; the rear connection module 3 1 2, and the next level Expansion machine 3 connection ' # has at least one judgment module (D _ inst 〇0~2) to match different pear state expansion

Page 12 1304931 V. Invention Description (8) Charger 3 connection identification setting; First setting connection module (Pb〇/ADl_0~Pbl5/AD2_5) 3 1 3 and second setting connection module (Pa〇/ DATA1 —〇pal5/RD2n )3 1 4, for users to set 1/() point expansion and external connection 'execution data reading and output according to demand; and hardware mode setting connection module (InU〇de〇~5 & 〇DEMl~3) 31 5, connected to the host 2 or through the upper expansion machine 3 and the host 2 'to set the expansion model for the host 2 to initialize the interpretation, and obtain = machine 2 or the upper level expansion machine 3 The positioning value of the conversion wheel and the conversion output positioning value are sent to the next-stage expansion machine 3, and whether the host 2 is connectable according to the positioning value of the distribution position, or the data access is performed through the memory unit 33; Connection module (LED/DATA2_0~ LED/DATA2_ 7_) 3 1 6 to match the expansion mode and connection mode, to connect the illumination τ (the LED, not shown) scan output to display the status of each digit. Or the temporary storage between the host 2 and the memory unit 33 is performed by the expansion machine 3. Of access,

An input control circuit 3 i 7 controls the first setting connection module (卩1) 0/eight 1) 1_0~? 1) 15/8 02_5) 313 and the second setting with the Lianshe module (PaO, /DATA1_〇~Pal5/RD2n) 3 i 4 data read input 0, including · an output / input channel switching control (pis〇) 3 2 1 and connected output/input channel switching controller (pis〇) 3 2 1 latching device (Latch) 3 2 2, and latching device (Latch) 3 2 2 connection - Display control unit 3 2 3 to control the above expansion by connection

Page 13 1304931 V. INSTRUCTIONS (9) = = Γ = member 4 action, the above output/input channel switching controller (PISG) 3 2 1 through switching element 3 2 4 b. and pulse signal input terminal (Dck 3 2 6 and the connection of the core: two switching elements 3 2 4 3 connection data transmission and transmission two pieces fI 4 4, ^ 7 and the data input terminal using two serial switches 2 4 5 for signal connection control, the latch The device a is connected to the LD signal terminal 3 -8 through the switching element 3 2 4 6 to receive the control signal of the front stage remote control χQχ ^ 2 A Chu 1 < gi U suction connection, π module 3 ii wheel, and The connection module (Pb〇/ADl_0~PM5/AD2 5) 3 1 3 and the second setting connection module (Pa〇/DATA1—〇~ρ& 4 receiving data; ;d 1 Songyi output control circuit 3 1 8 to control the above-mentioned first setting for the company; group_(◦~PM#5) 313 and the second setting: PJ〇/DATA1~0~Pal5/RD2n) 3 1 4 data output, package: 罟; ^ library management device (SIP 〇) 3 2 4 and connection database tube Ϊ ^ μ question lock device (10) Ch) 3 2 5, and w = ί (Utch) 3 2 5 connection one display control unit 3 2 3. The operation of the light-emitting element 4 for controlling the state of the extended point is controlled in the second step, and the two-package: the processing device 324 passes through the switching elements 3291, 3 2 92, the signal input terminal (Dck) 3 26 and the data transmission end (Di 3 Material transfer rim Element 3 2 9 3 Connect the data input terminal ' and use the two-series switch (L 2 9 4 ' 3 2 9 5 for signal connection control between the component ^ 3 2 7 and the data input terminal, The latching device atch ) 3 2 2 transmits the switching element 3 2 9 6 and the LD signal terminal 3 2

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1304931 V. INTRODUCTION OF THE INVENTION (ίο) ^ ^—- 8 Connection 'The first setting connection module (Pb0/AD1-0~Pbl5/AD2_5) 3 1 to accept the control signal input from the front-end connection module 3 1Ί 3. and the second setting connection module (Pa〇/DATA1_〇~Pal5/RD2n) 3 work 4 output data; 'a counter, connected with the above hardware mode setting connection module to generate a count signal and a transition control The enable signal (SH) is connected to the host 2' or the upper and lower expansion units 3 and the power signal terminal Vcc in a single line manner to improve the communication control speed.

According to the architecture design of the multi-mode connection communication interface between the PLC expansion machine and the host computer of the present invention, wherein the communication interface 3 of the expansion machine 3 and the integrated circuit and the connection module of most of the function settings have been defined = the same = Charger type and wire connection mode, each (4) expansion machine = (4) Communication interface 3 1 and most of the function setting connection module, with the community 2 host 2, or the upper and lower level expansion machine 3 For the hardware setting application of communication connection point expansion, you can also directly use the first and second setting connection modules of the face 3 i and integrated circuit, μ, 3 1 4 according to the demand setting "〇 points Expansion pin; and host 2: initial. When the time is 'can read the signal of a certain judgment module, the capacity i^stGmD-mstoG~2) from the communication interface 2 1 to judge the expansion type message: ^ output a positioning value to the expansion machine 3, each expansion The machine 3 receives the host's or the upper-level expansion machine 3 according to its pass value; automatically determines whether to allow or isolate the information sent by the host 2, or the data access of the buttocks stored in the memory unit 33. Moreover, the multi-mode communication interface of the PLC expansion machine and the host of the present invention is 1304931. 5. Description of the invention (11) The connection method of the expansion type and the data access mode application method, including: the serial number expansion function mode (DI/D0 mode), please refer to the third and sixth figures, the expansion machine 3 uses its communication interface 3 1 and the hardware mode setting connection module (InModeO~5 & 0DEM1~3) 3 1 5 'Set the expansion type, capacity and positioning value, use the front, connection module 3 1 1 , 3 1 2 to connect the host 2 or the upper and lower - level L expansion machine 3 to form the host 2 and the majority expansion The serial communication connection between the three machines, and the hardware designer according to the I/O expansion point pin requirements, the first setting connection module of the communication interface 31 (Pbo/AD1_〇~PM5/ad2) ° ^丨) 3 1 3 and 4 second setting connection module (pa0/DATAnPal5/^2n) 314 to set the I/O point expansion; Next, the host 2 performs an initialization operation, which is read by its communication interface 2 The signal of a certain judgment module (D_inst0~2~2) to judge the connected expansion type and capacity The connection and operation between the host 2 and the majority expansion machine 3 are normal. When the host 2 or the upper expansion machine 3 outputs a positioning value (C0DE), the expansion machine 3 automatically determines that the data transmitted by the host 2 is isolated. When the expansion machine 3 is in the judgment of permission, the data input and output between the input control circuit 3 i 7 and an output control circuit 3丄8 and the host 2 are made. Second, the special (non-digit point) expansion machine is arranged in series. Function mode f) For the sake of reference to the seventh and eighth diagrams, the expansion unit 3 uses the communication interface 1 and the hardware mode setting connection module of the integrated circuit (InM〇de〇~5 & 0ΜΜ卜3J 315, setting Its expansion model, capacity and positioning value 'use the front and rear connection modules 3 1 1 , 3 1 2 to connect to the host 2 or

1304931 V. Description of invention

The upper and lower stage expansion machines 3' form a serial communication connection between the host 2 and the plurality of expansion machines 3, and the address line 3 7 , the data line 3 8 and the address line 3 9 and are first set by the communication interface 3 1 The memory unit 3 is connected by the P0/AD1_0~Pb9/AD1_9 connection terminal in the connection module 3 1 3 and the PaO/DATA1_PalO/RDln connection terminal in the second connection module 3 1 4 The first output terminal 3 3 1 of 3 is used to form an output setting of the host terminal mode; then, the host 2 performs an initialization action of the host 2 or the upper level expansion

2 Using the serial communication interface charger 3, the Dinst signal is (0), the counter in the expansion machine 3 〇丄 clears the count and returns to zero' and reads a certain judgment module (D_ins°t〇~2 = St.!)~2) Signal 'To judge the connected expansion type and capacity, the connection and operation between the machine 2 and most expansion machines 3 are normal; each expansion machine 3 is connected to the expansion machine 3 according to its communication interface 3. The positioning value of the conversion round is received by the host 2 or the data access of the upper level 2, a towel, n automatically determines whether to allow or isolate the host unit 33! Its host: mode = for the expansion machine 3 to allow the memory to be temporarily stored Path mode and groove = machine 2, in order to form a two-way data exchange, by memory single point .Q,, then 'read and write data' to provide a temporary location of data, host material data and expansion machine 3 The host 1 is used to access the temporary storage in the memory unit 3 3 . , mode to access the memory unit 3 3 temporarily stores the expansion machine 3 and the connection unit 3 3, the careful M machine 2 through the communication interface 31 and the memory 2 in the initialization action, the host two steps 'see the ninth 'Dinst of the host or the next-level adjacent expansion machine 3

1304931 V. Description of invention (13) The signal is (0) (as in Flow 4), the counter in the expansion unit 3 1 9 clears the count and returns to zero (eg, flow 4 0 2 ), selects the transition control enable signal • SHen The shift register 34 (step 404), then, after the host 2 confirms the selected shift register 34, the Dinst signal is converted to (3) (eg, flow 4 0 6 ), and the pulse signal is output by the pulse signal Dck. The data transmission line DI rotates the chip selection address (for example, the process 4 0 8); when the LD signal=1, the pulse signal Dck outputs a pulse wave (for example, the flow 4 1 〇), so that the above wafer selection address is stored. Into the enable level signal ♦ ΕΝ register 3 5 (such as flow 4 1 2) ' At the same time, the counter 3 1 9 choice plus ▲ 1 (趴 process 4 1 4), then, pulse signal Dck output pulse wave 'Data transmission line DI output memory unit 3 3 select the address signal (such as the process

4 1 6) 'When the Dinst signal is (3) (as in the flow 4 1 8), the pulse signal Dck outputs a pulse wave (such as the flow 4 2 〇) to make the above-mentioned memory unit 3 3 select the address to be stored in the address register 3 6 (as in the process 4 2 2), the count of the s-numberer 3 1 9 is further increased by 1 (as in the process 4 2 4 ) 'When the Dinst signal is (6) (eg, flow 4 2 6 ), LD signal, pulse signal Dck output a pulse wave (such as process 4 2 8 ), read the data stored in Ji 罝 罝 -Q 3 (such as process 43 〇), then: pulse; Early: No. 3 ck outputs a pulse wave, so that the above-mentioned data read by the memory unit 3 3 is outputted by the material transmission line DI (for example, flow 4 3 2 ), and the counter 3丄9 is again = as in the process 4 3 4), and then, Memory unit 3 3 has the judgment of the data (such as the process 4 3 6 ), and in the ageing branch also - owe ^ art ^ J Asia in the judgment of no data, and the beam reading stream is light (such as the process 4 3 8 ). Ό, the expansion machine 3 and the connection host 2 are transmitted through the communication interface 3

surface

Page 18 1304931 V. Description of Invention (14) Note, the data written by unit 3 3, the signal and control flow is roughly the same as: f read the tenth figure. The same 'the difference is in the pair of memory unit 3 ; 3 〇◦~4 2 4 When the Dinst signal is (6) (such as the flow ~ path data write control, 'out of the pulse wave' at the same time, the data transmission line DI turns out the desire) 丄 pulse, number? Data loss (such as process 4 4 2 ). Stop T n 5 recall unit 3 3 out of a pulse (such as process 4 4 ^ signal = 1 'pulse signal Dck lose 3 3 (as in process 446), count 〇 枓 枓 纪 纪 兀 兀 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十 十#I ^ flow of the data (such as the process 4 5 2 ). Only π < π fruit, the township to read the 掇 two and f ί (non-digit point) expansion machine function mode (RAM read two and read In the eleventh and twelfth figures, the expansion machine 3 sets the expansion mode, the valley L, by using the hardware mode setting connection module six 15 & 〇DElsn~3 315 of the integrated circuit. After the positioning value is used, the front and rear connection modules 3 1 1 and 3 1 2 are used to connect the expansion machine 3 of the upper and lower levels of the host 2' to form the address line 3 7 a between the host 2 and the majority of the expansion machine 3. a parallel communication connection between the data line 3 8 a and the address line 3 9 a, and the Pb〇/ADl-0~Pb9/AD1_9 connection end in the first setting connection module 3 1 3 of the communication interface 3 1 , and PaO/DA in the second setting connection module 3 1 4 The TAl_PalO/RDln connection terminal 'sets the first output terminal 3 3 1 ' of the memory unit 3 3 to form the output setting of the host mode, and the first setting connection module of the communication interface 31 PM0/AD2 in 3 1 3~Pbl5/AD2_5

Page 19 1304931 V. Invention description (15) and the connection terminals of DrO/AD2_6, DrO/AD2_7, and the connection terminals of the second setting connection module 3 1 4, the Pa8/CSln~Pal5/RD2n connection end, and the slave end mode - type connection module (LED / DATA2_0 ~ LED / DATA2_7) 3 1 6 and so on, set the second output terminal 3 3 2 of the above memory unit 3 3 to form a host mode output setting;

The expansion machine 3 executes a wafer addressing procedure at boot time, the host 2 performs an initialization operation, and then the host 2 reads a signal of a certain judgment module (D-instO~2 or D-instoO~2) to determine the location. Connect the expansion type and capacity, confirm the connection between the host 2 and most of the expansion machines 3 and operate normally 'then' when the host 2 or the upper level expansion machine 3 converts and outputs a positioning value (CODE), each expansion machine 3 according to its The communication interface 31 receives the positioning value of the conversion output of the host 2' or the upper expansion machine 3, and automatically determines whether to permit or isolate the data access with the host 2, wherein the determination is that the extension machine 3 is allowed even if its memory unit 3 3 and the host 2 temporary storage path modes and communication connections forming a two-way exchange, in other words, a temporary storage location of the data is provided by the memory unit 33, and the host 2 uses the host-side mode to access the temporary storage data in the memory unit 33, and The expansion machine 3 uses the slave mode. The above-mentioned wafer addressing procedure 'only needs to be executed when the expansion machine 3 is powered on—the execution flow is shown in the thirteenth figure, and the microprocessor 3 2 enters the address 5 1 2 data (0 ) (eg, process 500), and perform the transition control, ', the enable signal 811^ the displacement register 3 4 3 and the address register (^(^ ss register) 3 6 clear action (such as Flow 5 〇 2 ), then, 6 is written by the microprocessor 3 2 to address 5 1 2 data (1) (eg, flow 5 〇 4')

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V. Description of invention (16) 'And perform the judgment of the age of the tributary transmission line θ 5 〇fn, no equal to 1 (as in the process 5 ϋ 6), the judgment result is 1, the address is temporarily stored in the sauce) 3 6 Pole a ii (Address reg • track plus 1 operation (such as process 5〇r, lack of your address register (Address register) 8 8)..., after execution bit · (eg flow 5 1 m * :g ) 3 6 is the 16th judgment, such as rogue b 1 〇), when the process 5 〇6 judges the execution of the process 5 1 〇 judgment, counted in the brakes, direct "i: end (such as process 512 ), but if the result of the judgment is fixed; return to the process 50 4 to continue to the implementation of the meaning of 1 to 1 thousand Of into the wafer address and end. 2丄t expansion machine 3 using its communication interface 3 1 parallel connection host ^ ^, the data access operation distance between the expansion machine 3 of the next level, rent > As shown in the fourteenth figure, the microprocessor 3 2 writes the address 5丄2 data 2+ ^chip address (such as the flow 6 〇〇), the above-mentioned chip address is stored in the current address, the address register (6 8 a (such as the process 6 〇 2), the receiver executes the current address register (Address regi s ter ) 3 6 a Judging whether or not the address register 3 6 is equal ▲ If the result of the judgment is the same, the data is read or written by the microprocessor 3 2 to the memory unit 3 3 ( If the process 6 〇 6 ), then complete the access process and end (such as process 6 〇 8), and when the judgment result is not the same, then do not do any data access action and directly end. Because of the PLC expansion of the present invention The multi-mode connection communication interface between the machine and the host computer uses the integrated circuit design communication interface, and defines various connection modes of different expansion machine types and various function settings on the communication interface, ... Communication connection between the host and various expansion models to

Page 21 1304931 V. Inventive Note (j7) The expansion of the /〇 point has the interface of the output interface that can be easily and conveniently used for the integrated circuit of the If interface, and I/I can be set according to the point. The number of points O is sufficient to improve the designer's need to make different hardware designs and time waste on the hardware f-type and I/O points expansion for the user to be more convenient, low-cost but easy to use. p Expansion mode and host multi-mode connection communication interface. :Time's use of at least one memory unit in the expansion machine, with the accumulation of ΐ: road; the communication interface is applied to the special expansion machine connection, forming a temporary storage path mode for the shell father, for the host and special = Dual expansion machines deliver data in a side-by-side master-slave manner. The digital description is only a preferred embodiment of the present invention, and e is not the scope of the invention. That is, the scope and the modifications of the patent application scope of the present invention are covered by the scope of the invention. Uniform change 1304931 Brief description of the drawings [Simplified description of the drawings] The first diagram is a communication of the prior art The second diagram is the second diagram of the invention The communication of the invention - The fourth diagram is the fifth diagram of the communication of the invention The sixth diagram of the communication is a schematic diagram of the invention in the serial wheel. > The seventh figure is a schematic diagram of the internal circuit connection of the present invention in the series. The eight-picture is the serial connection structure of the present invention. The tenth figure is a flow chart of the invention in the string architecture. The invention is based on the internal circuit connection diagram of the invention. The invention is based on the internal circuit connection frame of the invention. The flow interface architecture block diagram is a schematic diagram of the architecture. The interface of the integrated circuit of the interface is controlled by the interface. The output control of the interface is shown in the figure. Circuit block diagram. Circuit block diagram. Function mode application data % Special expansion machine diagram. % Special expansion machine diagram. The special expansion machine function mode application of the integrated body of the moon plate type application of the integrated energy mode application of the integrated body 歹·! Special expansion machine function mode application of integrated power Parallel special expansion machine Intent. & column special expansion mechanism diagram. Serial special expansion machine diagram. Serial special expansion machine diagram. The integration of the functional mode application The integration of the functional mode application The integration of the functional mode application

1304931 Brief description of the diagram [Main components: Main body of the invention. Main unit 2 Expansion unit 3 _ Light-emitting element 4 Communication interface 2 Microprocessor 2 Memory unit 3 > Displacement register EN register. 3 address register current address temporary address bus data bus bar address address pre-stage connection mode post-stage connection mode first setting with second setting hardware mode set slave mode input control electric output control Electrical counter 3 1 symbol description component symbol description 1, 2 > 3 3 4 3 1 4 a 3 6 memory 3 6 3 7 , 3 3 8 , 3 stream row 3 9 group 3 1 1 group 3 1 2 link module Connection module fixed connection module connection module road 3 1 7 way 3 1 8 9 a 7 a 8 a , 3 groups 3 4 1 a

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Claims (1)

Daily repair (Bundle 3 #£ 94146081 1304931 Sixth, the scope of application for patents, a PLC expansion machine and the host guest, including a host, including: ^: Feizhi Xi pull connection communication interface module; a communication interface, with an integrated circuit and more The function setting is connected to a microprocessor, and the communication interface is electrically connected to at least one expansion machine, comprising: a 'microprocessor; a memory unit electrically connected to the microprocessor; a communication interface, and the microprocessor Sex & connection, having an integrated circuit and a plurality of sets of function setting connection modules; _ wherein the expansion machine defines various expansion type and communication connection mode by using the integrated circuit of the communication interface to connect the above The host and another adjacent expansion machine form a communication link, and use at least one function setting connection module of the integrated circuit to set the I / 0 point expansion pin according to requirements, so that the host and various expansion modes are Communication connection, and 丨/〇 point expansion have a consistently applicable communication interface to quickly pass the positioning value of the host output' automatically enabled or isolated by the expansion unit The data sent by the host and the data access temporarily stored in the memory unit. 2. The multi-mode connection communication interface device of the PLC expansion machine and the host computer described in the first application of the patent scope, wherein the communication interface of the host and the communication interface of the expansion device further comprise a address line, a data line and an address line. String, juxtaposed by its way. 3. As shown in the patent extension, the PLC expansion machine and host Page 26 304931 Case No. Q414fi08l VI. Application for Patent A_ Correction f / _ The multi-mode is connected to the communication interface device, wherein the host communication interface and the expansion device communication interface are the same integrated circuit and function connection module design. 4. The multi-mode connection communication interface of the PLC expansion machine and the host computer according to the first aspect of the patent application scope, wherein the communication device mask of the expansion machine has an integrated circuit, comprising: a front-end connection module, Electrically connected to the host or the upper level expansion machine - the first expansion is initialized with ~ stone 柃: value and transposition of the positioning data access ''from, electrically by the expansion machine, ~ wheel 4 data 趿 link module, -, two setting and external connection, body mode setting and interpretation, and electrical output output positioning value selection host is 9 machine mode connection connected to the light-emitting element for memory unit into the control circuit, read input; output control circuit, with The connection module is as follows: the patent application model and the next-level expansion electromechanical connection; the connection module for setting the I/0 point to perform data reading and output according to the requirements; and the junction module to set the expansion mode for the host connection to obtain the host Or the output of the upper level is sent to the next level expansion machine, and whether it can be connected according to the allocation position, or the module is connected through the memory unit, and the expansion type and connection are matched. Scan type display for each digit output point state or the temporary access information; to control the above-described first and second set with a second coupling wheel London ~ fishing die set 5 The first setting connection module and the data wheel are controlled to be controlled. The PLC expansion machine and the host p〇49U case number shown in the fourth item are repaired. (4) He repairs &l 6. The multi-mode connection communication interface device of the patent application scope, wherein the expansion machine communication The interface further includes a transition control signal electrically connected to the host and the adjacent expander and the power signal terminal V cc in a single line manner. 6. The multi-mode connection communication interface device of the PLC expansion machine and the host computer as claimed in the application scope of the patent scope, wherein the communication interface of the expansion machine further comprises a counter and the above-mentioned hardware mode setting connection module electrical property. The connection produces a count signal. 7. The multi-mode connection communication interface device of the PLC expansion machine and the host computer according to the fourth aspect of the patent application, wherein the pre-connection module further comprises: at least one judgment module is provided to cooperate with different types of expansion Electromechanical connections and identification of their type settings by signal reading. 8. The multi-mode connection communication interface device of the plc expansion machine and the host computer as claimed in claim 4, wherein the rear connection module further comprises at least one judgment module for matching different types. The state expands the electromechanical connection and recognizes its type setting by reading the signal. 9. The multi-mode connection communication interface device of the PLC expansion machine and the host computer according to claim 4, wherein the input control circuit comprises: an output/input channel switch quantity controller (PI SO ) and a The latching device jL_atch is configured to be electrically connected to the latching device: the control unit 7〇' controls the light-emitting component of the extended-point state display to lock the round-trip/in The channel switch quantity controller (PIS0) and the flashing device (Latch) mine, 14&. electric steep connection and accepting the dashing signal input by the pre-connection module, and by the first - also / brother, two Set the module connection module to receive data. > PLC expansion machine and main program described in item 9 of the patent scope 1304931 _Case No. 94UR0R1 VI. Patent application range multi-mode connection communication interface device, wherein 'the output/input channel switch=controller (P丨S〇) further includes: respectively through a switching element and the pre-connection module The pulse signal input end Dck and the data transmission end are electrically connected, and the switching element is electrically connected to a data input end, and the switching element is connected between the data transmission end DI and the data input end by using two serially connected switching elements. The latching device (Latch) is electrically connected to the LD signal end of the level connection module through the switching component to receive the control signal input by the preamplifier module. ° 1 1 'The pLc expansion machine and the main eve mode communication interface device according to item 4 of the patent application scope, wherein the output control circuit package $ has: a database management device (SIP0) and the flash lock The device is composed of a device Latch, and the device is electrically connected to the controller device for controlling the display of the expansion point state, the library management device and the latch. The device (Latch) is connected to receive the control signal input by the front-end connection module, and the first and second setting connection modules output data. 1 2. The ριχ expansion as described in claim 1 The machine and the multi-mode connection communication interface device, wherein the database management device S IP0) further comprises: respectively, through the switching element and the front-end connection module η "the tiger input terminal Dck and the data transmission end, the other connection The data transmission terminal is electrically connected to the data transmission terminal DI, and the signal connection is controlled by the two serially connected switching elements between the data transmission terminal DI and the resource input terminal. The latch device π atrh, Thai, refers to, τ ^ clothing 1 Uatch) through the switching element and the LD signal terminal of the front-end connection module, the remote connection, the electrical connection is accepted from the input of the front-end connection module Page 29 _January--i VI. Application for patent coverage Control signals. 13. The multi-mode connection communication interface device of the PLC expansion machine and the host according to the first aspect of the invention, wherein the memory unit further comprises: a first output end and a second output end. 1 4, ~ plc expansion machine and host multi-mode connection communication interface communication connection method, is applied to the serial communication connection mode of the host and the digital point expansion machine's method steps include: a), the expansion machine is controlled by the communication interface The hardware mode setting connection module does not determine its expansion type, capacity and positioning value; b), the host front and rear module pins are connected to the host, or the upper and lower level expansion machines form the host and the majority Expanding the serial connection between the machines; -TC), using the first and second setting of the communication interface, the I/O points expansion and its pins; and, mf} The communication interface reads the signal of a certain J group to determine the connected expansion type, the electrical connection between the main machine and the majority of the expansion machine, and the normal operation; indeed, the charging machine:), the host and In addition, the adjacent expansion machine converts the m value to the expansion), and the expansion machine determines the data sent by the self-prepared w△ machine according to the positioning value. The dynamic judgment allows or isolates the vertical connection. The communication connection method between the PLC expansion machine and the host is applied to the host fish's connection communication interface mode. The method steps include: ^ serial expansion communication of the special expansion machine a), expansion The machine is set by the hardware mode of the communication interface to set the expansion mode, capacity and positioning value; b), connected to the host by the front and rear connection modules of the communication interface, or the expansion machine of the upper and lower levels Forming a serial communication connection between the host and most of the expansion machine address lines, data lines and address lines; 2 setting the connection module to form the host end mode round c), using the communication interface - and the above One output of the memory unit is connected, set; ), the host performs an initialization operation, and the signal of a certain judgment module is read by the communication interface to determine the connected expansion type and capacity, and confirm the connection between the host and most expansion machines. And the operation is normal; e), the host and another adjacent expansion machine convert and output a positioning value to the expansion machine; f ^ ;, the expansion machine automatically determines whether to allow or isolate according to the positioning value The data access of the host and the memory unit; g), the expansion machine judges the data access of the memory unit according to the positioning value to form a temporary path mode and communication connection for forming a two-way data exchange; ^), the host uses the serial communication interface The temporary storage data is accessed in the memory unit, and the expansion machine uses the host mode to access the temporary data in the memory unit. 1 6. The method for communication connection between the PLC expansion machine and the host computer, and the town-to-town connection communication interface, as described in claim 15 of the patent application scope, wherein the special expansion refers to a non-digital expansion machine. 7. A multi-mode connection communication interface between the PLC expansion machine and the host computer. The communication connection v stone method is applied to the parallel communication connection between the host and the special expansion machine. Case number 9414608] 1304931 The method of applying for the patent range is as follows: a) The expansion machine is set by the hardware mode of the communication interface to set its expansion mode, capacity and positioning value; even, the chess group 'b), in front of the communication The rear-end link module is connected to the host, and the adjacent expansion machines of the upper and lower levels form a serial communication connection between the host and the plurality of expansion machine lines, data lines and address lines; C), using the first and second communication interfaces The setting module is connected to the output end of the memory unit 70 to form a host terminal ^ slave mode output setting; , "long d", the expansion machine executes a wafer addressing procedure when booting; e), the host Performing an initialization action, reading a certain module signal from the communication interface to determine the connection type, capacity, confirmation sentence, connection between the host and most expansion machines, and normal operation; f), host and another phase The expansion output of the adjacent expansion machine must be charged; the value is expanded by the main expansion g), and the expansion machine automatically judges the data access of the memory unit according to the positioning value; the engraving machine and h), the expansion machine according to the positioning value Allow and memory access, form a double: data exchange temporary path mode and communication connection; Bellow ’ and the expansion machine uses the slave mode to access the memory unit for temporary storage: Page 32