Delta DVP-ES2 User Manual download pdf (Page 410)

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

3-294

Program Example:

Connect PLC to VFD series AC motor drive (RTU mode, M1143 = ON), (8-bit mode, M1161 =

ON), Write the data to be sent (H1770) into address H0706 on VFD.

M1002

MOV H86 D1120

SET M1120

Sending

request pulse

Write data to be sent in advance

SET

M1122

MOV

K100

D1129

D100 K8 D120 K8

Processing received data

RST

M1123

Receiving completed

Set communication protocol as

9600,7,E,1

Retain communication setting

Set communication timeout as:

100ms

Sending request

Reset M1123

SET

M1161

8-bit mode

PLC  VFD, PLC sends: 01 06 0706 1770 66 AB

Registers for sent data (sending messages)

D100 low byte 01 H Address

D101 low byte 06 H Function

D102 low byte 07 H

D103 low byte 06 H

Data address

D104 low byte 17 H

D105 low byte 70 H

Data content

D106 low byte 66 H CRC CHK 0

D107 low byte AB H CRC CHK 1

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

ON).

M1000

CRC D100 K6 D106

CRC checksum: 66 H is stored in low byte of D106 and AB H in low byte of of D107,

1 2 ... 405 406 407 408 409 410 411 412 413 414 415 ... 701 702

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