DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
a) Range of S 1 : K1 ~ K255
b) The instruction will read VFD status at parameter address 2100H~2104H (Please refer
to user manual of specific VFD for details.) and store the feedback data in
D1070~D1074. However, the content in D1070~D1074 will not be updated when
receiving error or timeout occurs. Therefore, please check the status of receiving
completed flag before applying the received data
Program Example: COM2 (RS-485)
1. Communication between PLC and VFD-B series inverter (ASCII Mode, M1143 = OFF).
Retry when communication time-out occurs.
2. Read VFD status at parameter address 2100H~2104H and store the received data in D1070 ~
D1074.
M1002
MOV H86 D1120
Set up communication protocol as
9600, 7, E, 1
SET
M1120
Retain communication protocol
MOV K100 D1129
Set up communication time-out: 100ms
X0
M1129
X0
SET
M1122
Retry when communication time-out occurs
RDST K1 K0
Receiving completed
M1127
Processing received data
Sending request
Communication instruction setting:
Device address: 1
K0: Reserved
The received data is stored in
D1070 ~ D1074.
RST
M1127
Reset M1127.
PLC VFD-B, PLC sends: “:01 03 2100 0005 D6 ”
VFD-B PLC, PLC receives: “:01 03 0A 00C8 7C08 3E00 93AB 0000 2A ”
Data to be sent (sending messages)
Data
Descriptions
‘0’ 30 H ADR 1
‘1’ 31 H ADR 0
AC drive address : ADR (1,0)
‘0’ 30 H CMD 1
‘3’ 33 H CMD 0
Command code: CMD (1,0)
2’ 32 H
‘1’ 31 H
‘0’ 30 H
Starting data address
‘0’ 30 H
3-285