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

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
Register Data Descriptions
D1077 low byte FE H CRC CHK Low
D1078 low byte 5C H CRC CHK High
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 read the data of address H2100 in device 01(VFD-B) and stores the
data in ASCII format in D1070 ~ D1085. PLC will automatically convert the data and store
them in D1050 ~ D1055.
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 communication protocol as 9600, 8, E, 1
SET
M1120
Retain communication protocol
X0
M1129
M1140
M1141
MOV K100 D1129 Set communication time-out as 100ms
SET M1122 Sending request
Retry when communication time-out occurs
Retry when data receiving error occurs
Retry when parameter error occurs
X0
MODRD K1 H2100 K 6
Set communication instruction:
Data length: 6 words
Data address: H2100
Receiving completed
Device address: 01
M1127
The received ASCII data is stored in D1070-D1085
Handle received data and PLC converts the data and store them into
D1050-D1055 automatically.
RST
M1127
Reset M1127
M1129
RST
M1129
Reset M1129 (receiving timeout)
3-272