Delta DVP-ES2 User Manual download pdf (Page 458)

100

101

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

3-342

H87

MOV

M1002

D1109

SET

M1136

K100

MOV

D1252

MODRW

H2100 D0 K6

Connection device

address: K1

Function code:

Read multiple words

Data address: H2100

Data st or i n g reg iste r

Data length(word)

SET

M1316

M1320 = OFF

ASCII mode

RST

M1320

SET

M1320

Set communication protocol as 9600,8,E,1

Retain communication setting

Set communication timeout as 100ms

Sending request

M1320 = ON

RTU

mode

RST M1318

Processing received data

Reset M1318

M1318

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

Receiving completed

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)

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.

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Delta DVP-ES2 User Manual Page 458

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