Delta DVP-ES2 User Manual download pdf (Page 463)

100

101

3. Instruction Set

3-347

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

When X0 = ON, MODRW instruction executes the function specified by Function Code 05

PLC1 Ö PLC2, PLC sends: “01 05 0500 FF00 6F”

PLC2 Ö PLC1, PLC receives: “01 05 0500 FF00 6F”

(No data processing on received data)

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

When X0 = ON, MODRW instruction executes the function specified by Function Code 05

PLC1Ö PLC2, PLC1 sends: “01 05 0500 FF00 8C F6”

PLC2 ÖPLC1, PLC1 receives: “01 05 0500 FF00 8C F6”

(No data processing on received data)

Program Example 7: COM2(RS-485), Function Code H06

1. Function code K6 (H06): Write in single word device.

2. Set the value to be written into VFD-B in the register specified by operand S.

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

received data in D1070~D1085.

4. Take the connection between PLC (PLC COM2) and VFD-B for example, the tables below

explains the status when PLC reads status of VFD-B. (M1143 = OFF, ASCII Mode) (M1143 =

ON, RTU Mode)

H87MOV

M1002

D1120

SET M1120

K100

MOV

D1129

RST M1127

Set communication protocol as 9600, 8, E, 1

Retain communication protocol

Set communication timeout as 100ms

MODRW K6K1

H2000 D50 K1

Connection device

address: K1

Function code K6

write in single data

Data address: H2000

Data storing register

D50=H1770

Data length

Processing received data

ASCII mode: The received data is stored in D1070~D1085 in ASCII format

RTU mode: The received data is stored in D1070~D1085 in Hex format

Reset M1127

M1127

SET

M1122

Sending request

M1143 = OFF

ASCII mode

RST

M1143

M1143 = ON

RTU mode

SET

M1143

Receiving completed

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Delta DVP-ES2 User Manual Page 463

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