Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Register Data Descriptions, Modrd

3. Instruction Set

Program Example 1:

Communication between PLC and VFD-B series AC motor drives (ASCII Mode, M1143 = OFF)

M1002	MOV	H87	D1120 Set communication protocol as 9600, 8, E, 1
	SET	M1120	Retain communication protocol
	MOV	K100	D1129 Set receiving time-out as 100ms
X1
	SET	M1122	Sending request
X0
	MODRD	K1	H2101		K6
						Set communication instruction:
						Data length: 6 words
						Data address: H2101
M1127						Device address: 01
				PLC converts the received ASCII data in
	Processing received data D1070~D1085 into Hex data and stores them
				into D1050~D1055
Receiving	RST	M1127	Reset M1127
completed

PLC → VFD-B , PLC transmits: “01 03 2101 0006 D4”

VFD-B → PLC , PLC receives: “01 03 0C 0100 1766 0000 0000 0136 0000 3B”

Registers for data to be sent (sending messages)

Register		Data				Descriptions
D1089 low byte	‘0’		30 H	ADR 1	Address of AC motor drive:
D1089 high byte	‘1’		31 H	ADR 0	ADR (1,0)
D1090 low byte	‘0’		30 H	CMD 1	Command code: CMD (1,0)
D1090 high byte	‘3’		33 H	CMD 0
D1091 low byte	2’		32 H
D1091 high byte	‘1’		31 H	Starting data address
D1092 low byte	‘0’		30 H
D1092 high byte	‘1’		31 H
D1093 low byte	‘0’		30 H
D1093 high byte	‘0’		30 H	Number of data (count by word)
D1094 low byte	‘0’		30 H
D1094 high byte	‘6’		36 H
D1095 low byte	‘D’		44 H	LRC CHK 1		Checksum: LRC CHK (0,1)
D1095 high byte	‘4’		34 H	LRC CHK 0

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