Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual 08 0006 E7 CR LF, Register Data Explanation

3. Instruction Set

Program Example:

Connect PLC to VFD series AC motor drive (ASCII mode, M1143 = OFF), (8-bit mode, M1161 = ON), Write the data to be sent into registers starting from D100 in advance for reading 6 data from address H0708 on VFD.

M1002

MOV	H86	D1120 Set up communication protocol to 9600, 7, E, 1
SET	M1120	Retain communication protocol
MOV	K100	D1129 Set up communication time-out: 100ms

Sending request pulse

pulse

Write data to be sent in advance

SET M1122 Sending request

X10
RS	D100	K17	D120	K35

Receiving completed

M1123

Processing received data

RST M1123 Reset M1123

PLC VFD, PLC sends: “: 01 03 07				08 0006 E7 CR LF ”
Registers for sent data (sending messages)
	Register	Data				Explanation
	D100 low byte	‘: ’	3A H		STX
	D101 low byte	‘0’	30	H	ADR 1		Address of AC motor
	D102 low byte	‘1’	31	H	ADR 0		drive: ADR (1,0)
	D103 low byte	‘0’	30 H		CMD 1		Command code:
	D104 low byte	‘3’	33	H	CMD 0		CMD (1,0)
	D105 low byte	‘0’	30	H
	D106 low byte	‘7’	37	H	Starting data address
	D107 low byte	‘0’	30	H
	D108 low byte	‘8’	38	H
	D109 low byte	‘0’	30	H
	D110 low byte	‘0’	30	H	Number of data (words)
	D111 low byte	‘0’	30	H
	D112 low byte	‘6’	36	H
	D113 low byte	‘E’	45 H		LRC CHK 0		Error checksum: LRC
	D114 low byte	‘7’	37 H		LRC CHK 1		CHK (0,1)
	D115 low byte	CR	D H		END
	D116 low byte	LF	A H

The error checksum LRC CHK (0, 1) can be calculated by LRC instruction (8-bit mode, M1161 = ON).

M1000

LRC D101 K12 D113

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