Delta DVP-ES2 User Manual download pdf (Page 454)

100

101

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

3-338

3. 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 K3K1

H2100 D0 K6

Connection device

address: K1

Function code: K3

read multiple words

Data address: H2100

Data storing register

Data length(word)

Processing received data

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

and PLC converts the ASCII data to Hex value and stores them in

D1296~D1301 automatically.

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

Reset M1127

M1127

SET

M1122

Sending request

M1143 = OFF

ASCII mode

RST

M1143

M1143 = ON

RTU mode

SET

M1143

Receiving completed

ASCII mode (M1143 = 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 data to be sent (sending messages)

D1256 Low byte ‘0’ 30 H ADR 1

D1256 High byte ‘1’ 31 H ADR 0

Address of VFD-B: ADR (1,0)

D1257 Low byte ‘0’ 30 H CMD 1

D1257 High byte ‘3’ 33 H CMD 0

Control parameter: CMD (1,0)

D1258 Low byte ‘2’ 32 H

D1258 High byte ‘1’ 31 H

D1259 Low byte ‘0’ 30 H

D1259 High byte ‘0’ 30 H

Data Address

1 2 ... 449 450 451 452 453 454 455 456 457 458 459 ... 701 702

Delta DVP-ES2 User Manual Page 454

Comments to this Manuals