Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 367)

7 Application Instructions API 50-99
D V P - P L C A P P L I C AT I O N M A N U A L 7-83
MOV D1120 H86
M1002
SET M1120
SET M1122
MOV D1129 K100
X10
M1123
RST M1123
RS D100 K17 D120 K35
Process of received data
Set up communication protocol 9600,7,E,1
Retain communication protocol
Set up communication time-out 100ms
Write in data to be transmitted in advance
Set up sending request
Receiving of data is completed.
The flag is reset.
Sending request
pulses
Receiving
completed
PLC Ö VFD-B, PLC sends “: 01 03 2101 0006 D4 CR LF “
VFD-B Ö PLC, PLC receives “: 01 03 0C 0100 1766 0000 0000 0136 0000 3B CR LF “
Registers for sent data (PLC sends out message)
Register Data Explanation
D100 low ‘: ’ 3A H STX
D100 high ‘0’ 30 H ADR 1
D101 low ‘1’ 31 H ADR 0
Address of AC motor drive: ADR
(1,0)
D101 high ‘0’ 30 H CMD 1
D102 low ‘3’ 33 H CMD 0
Instruction code: CMD (1,0)
D102 high ‘2’ 32 H
D103 low ‘1’ 31 H
D103 high ‘0’ 30 H
D104 low ‘1’ 31 H
Start data address
D104 high ‘0’ 30 H
D105 low ‘0’ 30 H
D105 high ‘0’ 30 H
D106 low ‘6’ 36 H
Number of data (counted by words)
D106 high ‘D’ 44 H LRC CHK 1
D107 low ‘4’ 34 H LRC CHK 0
Error checksum: LRC CHK (0,1)
D107 high CR D H
D108 low LF A H
END
Registers for received data (VFD-B responds with messages)
Register Data Explanation
D120 low ‘: ’ 3A H STX
D120 high ‘0’ 30 H ADR 1
D121 low ‘1’ 31 H ADR 0
D121 high ‘0’ 30 H CMD 1
D122 low ‘3’ 33 H CMD 0
D122 high ‘0’ 30 H
D123 low ‘C’ 43 H
Number of data (counted by byte)