Delta DVP-ES2 User Manual download pdf (Page 388)

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DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

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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 M1120

RST M1127

M1127

RST M1129

Set communication protocol as 9600, 8, E, 1

Retain communication protocol

Set communication time-out as 100ms

MODRD K1 H2100 K 6

Set communication instruction:

Data address:

Data length: 6 words

H2100

Device address: 01

M1129

M1140

M1141

Sending request

Retry when communication time-out occurs

Retry when data receiving error occurs

Retry when parameter error occurs

Receiving completed

Handle received data

The received ASCII data is stored in D1070-D1085

and PLC converts the data and store them into

D1050-D1055 automatically.

Reset M1127

Reset M1129 (receiving timeout)

MOV K100 D1129

SET M1122

M1129

1 2 ... 383 384 385 386 387 388 389 390 391 392 393 ... 701 702

Delta DVP-ES2 User Manual Page 388

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