Application Of Modbus Tcp Master - Delta DVPEN01-SL Operation Manual

•
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.
6.13 Application of
Application Compiling MODBUS instruction by PLC_B, making Y0 of PLC_A flashing
(1) Adopt a static IP address.
(2) IP address of PLC_A: 192.168.0.4
(3) IP address of PLC_B: 192.168.0.5
Network
(4) Update from PLC_B to PLC_A
environment
(5) Use MODBUS instruction 050500FF00 to set "On" Y0.
(6) Use MODBUS instruction 0505000000 to set "Off" Y0.
(7) Y0 goes between On/Off once every one second.
1. See 6.1 for how to set 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.
DVP-PLC Operation Manual
Ethernet Communication Module DVPEN01-SL
TCP Master
MODBUS
M1013
M2 M1
M1
= D0 K0
= D0 K1
SET M1
TOP K100 K118 HC0A8
TOP K100 K117
TOP K100 K111
TOP K100
K120
TOP K100 K121
TOP K100 K122
TOP K100 K123
TOP K100 K124
TOP K100 K124
K1
H4 K1
K1 K1
H0
K1
H5 K1
K1
H5
H0 K1
HFF K1
H0 K1
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