Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Ascii mode COM3 M1320 = OFF, COM1 M1139 = OFF, Modrw

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

M1002
		MOV	H87	D1109	Set communication protocol as 9600,8,E,1
				Retain communication setting
		SET	M1136
		MOV	K100	D1252	Set communication timeout as 100ms					M1320 = ON
				M1320 = OFF
		RST	M1320				SET	M1320
				ASCII mode						RTU mode
	X0
				Sending request
		SET	M1316
X0
		MODRW	K1	K3	H2100	D0	K6		Data length(word)
									Data storing register
									Data address: H2100
									Function code: K3
Receiving completed									Read multiple words
									Connection device
M1318									address: K1

Processing received data

ASCII mode: The received data is converted to Hex value and stored in registers starting from D0

RTU mode: The received data is stored in registers starting from D0

RST

M1318

Reset M1318

ASCII mode (COM3: M1320 = OFF, COM1: M1139 = OFF):

When X0 = ON, MODRW instruction executes the function specified by Function Code 03 PLC Ö VFD-B, PLC sends: “01 03 2100 0006 D5”

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

Registers for received data (responding messages)

Register	Data	Descriptions
D0	0100 H	PLC converts ASCII codes in 2100 H and stores the converted
		data automatically.
D1	1766 H	PLC converts ASCII codes in 2101 H and stores the converted
		data automatically.
D2	0000 H	PLC converts ASCII codes in 2102 H and stores the converted
		data automatically.
D3	0000 H	PLC converts ASCII codes in 2103 H and stores the converted
		data automatically.
D4	0136 H	PLC converts ASCII codes in 2104 H and stores the converted
		data automatically.

3 - 342