Delta DVP-ES2 - Manual (Page 397)

3 . I n s t r u c t i o n S e t
3 - 2 8 1
In STOP instruction: operand n is reserved.
d) When Forward JOG is selected in FWR instruction, set value in S
2
is invalid. If users
need to modify the JOG frequency, please refer to manuals of specific VFDs.
Program Example: COM2 (RS-485)
Communication between PLC and VFD-B series inverter (ASCII Mode, M1143 = OFF), Retry when
communication time-out occurs.
M1002
MOV H86 D1120
SET M1120
MOV K100 D1129
RST M1127
M1127
X0
FWD K1 K500 K0
SET M1122
M1129
X0
Retry when communication time-out occurs
Processing received data
Receiving completed
Communication instruction setting:
Device address: 1
Frequency: 500Hz
K0:normal forward
Set up communication protocol as
9600, 7, E, 1
Retain communication protocol
Set up communication time-out: 100ms
Sending request
Reset M1127
PLC VFD, PLC sends: “:01 10 2000 0002 04 0012 01F4 C2 ”
VFD PLC, PLC sends: “:01 10 2000 0002 CD ”
Data to be sent (sending messages)
Data Descriptions
‘0’ 30 H ADR 1
‘1’ 31 H ADR 0
Address of AC motor drive: ADR
(1,0)
‘1’ 31 H CMD 1
‘0’ 30 H CMD 0
Command code: CMD (1,0)
‘2’ 32 H
‘0’ 30 H
‘0’ 30 H
‘0’ 30 H
Data Address
‘0’ 30 H
‘0’ 30 H
‘0’ 30 H
‘2’ 32 H
Data content