Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual M1002 Set communication protocol as 9600, 8, E

3. Instruction Set

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				Set communication protocol as 9600, 8, E, 1
	MOV	H87	D1120
	SET	M1120	Retain communication protocol
	MOV	K100	D1129	Set communication timeout as 100ms
X0		M1122	Sending request
	SET

M1129

Retry when communication time-out occurs

M1140

Retry when data receiving error occurs

M1141

Retry when parameter error occurs

X0
	MODWR	K1	H0100 H1770		Set communication instruction:
					Data: H1770
					Data address: H0100
Receiving completed					Device address: 01
M1127				The received data is stored in D1070-D1085
	Processing received data
				in ASCII format .
	RST	M1127	Reset M1127
M1129		M1129	Reset M1129 (receiving timeout)
	RST

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