Delta DVP-ES2 - Manual (Page 393)

3 . I n s t r u c t i o n S e t
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Program Example 3:
1. In the communication between PLC and VFD-B series AC motor drive (ASCII Mode, M1143 =
OFF), executes Retry when communication time-out, data receiving error or parameter error
occurs
2. When X0 = ON, PLC will write data H1770 (K6000) into address H0100 in device 01 (VFD-B).
3. M1129 will be ON when communication time-out occurs. The program will trigger M1129 and
send request for reading the data again.
4. M1140 will be ON when data receiving error occurs. The program will trigger M1140 and send
request for reading the data again.
5. M1141 will be ON when parameter error occurs. The program will trigger M1141 and send
request for reading the data again.
M1002
MOV H87 D1120
SET M1120
Set communication protocol as 9600, 8, E, 1
Retain communication protocol
Set communication timeout as 100ms
MODWR K1 H0100 H1770
X0
Set communication instruction:
Data address:
Data: H1770
H0100
Device address: 01
X0
M1129
M1140
M1141
Sending request
Retry when communication time-out occurs
Retry when data receiving error occurs
Retry when parameter error occurs
RST M1127
M1127
RST M1129
Receiving completed
Processing received data
The received data is stored in D1070-D1085
i . n ASCII format
Reset M1127
Reset M1129 (receiving timeout)
MOV K100 D1129
SET M1122
M1129