Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Program Example 4 COM2 RS-485

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			D1120 Set up communication protocol as 9600,7,E,1
	MOV	H86
	SET	M1120	Retain communication protocol
	MOV	K100	D1129	Set up communication time-out as 100ms
	SET	M1161	8-bit mode
Pulse for
sending request
	Write transmitting data in advance
	SET	M1122	Sending request
X0
	RS	D100	K8	D120	K8
M1123
	Processing Received data
	RST	M1123	Reset M1123.

PLC Ö VFD-B, PLC sends: 01 06 2000 0012 02 07

VFD-B Ö 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	Data address
D103 low	00 H
D104 low	00 H	Data content
D105 low	12 H
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	Data address
D123 low	00 H
D124 low	00 H	Data content
D125 low	12 H
D126 low	02 H	CRC CHK Low
D127 low	07 H	CRC CHK High

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