DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
Program Example 4: COM2 RS-485
1. Connect PLC to VFD-B series AC motor drives (AC motor drive in RTU Mode; PLC in 16-bit
mode and M1161 = ON).
2. Write the data to be sent into registers starting from D100 in advance. Write H12 (Forward
running) into H2000 (VFD-B parameter address).
M1002
MOV
H86
D1120
Set up communication protocol as 9600,7,E,1
SET
M1120
Retain communication protocol
MOV
K100
D1129
Set up communication time-out as 100ms
Pulse for
sending request
SET M1161 8-bit mode
Write transmitting data in advance
X0
M1123
SET M1122 Sending request
RS D100 K8 D120 K8
Processing Received data
RST
M1123
Reset M1123.
PLC VFD-B, PLC sends: 01 06 2000 0012 02 07
VFD-B PLC, PLC receives: 01 06 2000 0012 02 07
Registers for sent data (PLC sends out messages)
Register Data Explanation
D100 low 01 H Address
D101 low 06 H Function
D102 low 20 H
D103 low 00 H
Data address
D104 low 00 H
D105 low 12 H
Data content
D106 low 02 H CRC CHK Low
D107 low 07 H CRC CHK High
Registers for received data (VFD-B responds with messages)
Register Data Explanation
D120 low 01 H Address
D121 low 06 H Function
D122 low 20 H
D123 low 00 H
Data address
D124 low 00 H
D125 low 12 H
Data content
D126 low 02 H CRC CHK Low
D127 low 07 H CRC CHK High
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