Delta Electronics Ethernet Communication Module DVPEN01-SL Manual de usuario descargar pdf (Pagina 51)

Ethernet Communication Module DVPEN01-SL

DVP-PLC Application Manual

END

SET M2

M1RST

K100

K14 D14

RST M2

= D14 K2

= D14 K3

FROM

K100 K1TOP

K100TOP K1 K1

K0K14

K13

K100TOP

K86 H1064

Explanations:

• The data exchange will be executed every one second.

• Write “0” into CR#28, and PLC_B will use CR#25 ~ CR#26 as the IP address of the destination

PLC.

• Write the IP address of PLC_A into CR#25 and CR#26. The first two IP codes (192.168 =

H’C0A8) should be written into CR#26, and the last two IP codes (0.4 = H’0004) into CR#25.

• Write the Modbus address of D0 (H’1000) in PLC_A into CR#81 and CR#84.

• Write the Modbus address of D100 (register of RTC) (H’1064) into CR#86.

• Write the number of registers K7 into CR#85.

• Write “1” into CR#13 to start the data exchange.

• CR#14 = 2 refers to successful execution. CR#14 = 3 refers to failed execution.

• Once the data exchange is successful, the values in D1313 ~ D1318 in PLC

B will be written into

D0 ~ D6 of PLC_A.

6.12 Application of Modbus TCP Master (1)

Application Compiling Modbus instrcution by PLC_B, making Y0 of PLC_A flashing

Network

requirement

(1) Adopting static IP.

(2) IP of PLC_A: 192.168.0.4

(3) IP of PLC_B: 192.168.0.5

(4) Update from PLC_B to PLC_A

(5) Use Modbus instrcution 050500FF00 to set “On” Y0.

(6) Use Modbus instrcution 0505000000 to set “Off” Y0.

(7) Y0 goes between On/Off once every one second.

1. See 6.1 for how to set up the communication.

2. Compile the ladder diagram in the MPU and download it to PLC_B. See below for the program design.

We do not need to write any corresponding ladder diagram into PLC_A.

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Delta Electronics Ethernet Communication Module DVPEN01-SL Manual de usuario Pagina 51

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