Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual RTU mode COM3 M1320 = on COM1 M1139 = on

		3. Instruction Set
Register	Data	Descriptions
D5	0000 H	PLC converts ASCII codes in 2105 H and stores the converted
		data automatically.

RTU mode (COM3: M1320 = ON COM1: M1139 = ON):

When X0 = ON, MODRW instruction executes the function specified by Function Code 03 PLC Ö VFD-B, PLC sends: ” 01 03 2100 0006 CF F4”

VFD-B Ö PLC, PLC receives: “01 03 0C 0000 0503 0BB8 0BB8 0000 012D 8E C5”

Registers for received data (responding messages)

Register	Data	Descriptions
D0	0000 H	PLC converts data in 2100 H and stores the converted data
		automatically.
D1	0503 H	PLC converts data in 2101 H and stores the converted data
		automatically.
D2	0BB8 H	PLC converts data in 2102 H and stores the converted data
		automatically.
D3	0BB8 H	PLC converts data in 2103 H and stores the converted data
		automatically.
D4	0136 H	PLC converts data in 2104 H and stores the converted data
		automatically.
D5	012D H	PLC converts data in 2105 H and stores the converted data
		automatically.

Program example 5: COM2(RS-485), Function Code H05

1.Function code K5(H05): Force ON/OFF bit device

2.PLC1 connects to PLC2: (M1143 = OFF, ASCII mode), (M1143 = ON, RTU Mode)

3.n = 1 indicates Force ON (set FF00H) and n = 0 indicates Force OFF (set 0000H)

4.For ASCII or RTU mode, PLC COM2 stores the data to be sent in D1256~D1295 and stores the received data in D1070~D1085

5.Take the connection between PLC1 (PLC COM2) and PLC2 (PLC COM1) for example, the tables below explain the status when PLC1 Force ON PLC2 Y0.

3 - 3 4 3