Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 404)

8 Application Instructions API 100-149
DVP-PLC Application Manual 8-2
MOV D1120 H87
M1002
SET M1120
MOV D1129 K100
M1127
RST M1127
receiving
completed
Set up communication protocol 9600, 8, E, 1
Retain communication protocol
Set up communication time-out: 100ms
Process of receiving data
Sending/receiving of data is completed. The flag is reset.
SET M1122 Set up sending request
X1
X0
MODRD K1 H2101 K6
Set up communication instruction device address 01
data address H2101 data length 6 words
The received data are stored in D1070 ~ D1085 in ASCII format.
PLC will automatically convert the data into numerals and store
them in D1050 ~ D1055.
PLC VFD-S, PLC sends: “01 03 2101 0006 D4”
VFD-S PLC , PLC receives: “01 03 0C 0100 1766 0000 0000 0136 0000 3B”
Registers for sent data (sending messages)
Register DATA Explanation
D1089 low ‘0’ 30 H ADR 1
D1089 high ‘1’ 31 H ADR 0
Address of AC motor
drive: ADR (1,0)
D1090 low ‘0’ 30 H CMD 1
D1090 high ‘3’ 33 H CMD 0
Instruction code: CMD
(1,0)
D1091 low ‘2’ 32 H
D1091 high ‘1’ 31 H
D1092 low ‘0’ 30 H
D1092 high ‘1’ 31 H
Starting data address
D1093 low ‘0’ 30 H
D1093 high ‘0’ 30 H
D1094 low ‘0’ 30 H
D1094 high ‘6’ 36 H
Number of data (counted by words)
D1095 low ‘D’ 44 H LRC CHK 1
D1095 high ‘4’ 34 H LRC CHK 0
Checksum: LRC CHK
(0,1)
Registers for received data (responding messages)
Register DATA Explanation
D1070 low ‘0’ 30 H ADR 1
D1070 high ‘1’ 31 H ADR 0
D1071 low ‘0’ 30 H CMD 1
D1071 high ‘3’ 33 H CMD 0
D1072 low ‘0’ 30 H
D1072 high ‘C’ 43 H
Number of data (counted by byte)
D1073 low ‘0’ 30 H
D1073 high ‘1’ 31 H
D1074 low ‘0’ 30 H
D1074 high ‘0’ 30 H
Content of
address 2101 H
PLC automatically convert
ASCII codes to numerals
and store the numeral in
D1050 = 0100 H
D1075 low ‘1’ 31 H
D1075 high ‘7’ 37 H
D1076 low ‘6’ 36 H
D1076 high ‘6’ 36 H
Content of
address 2102 H
PLC automatically convert
ASCII codes to numerals
and store the numeral in
D1051 = 1766 H
D1077 low ‘0’ 30 H
D1077 high ‘0’ 30 H
D1078 low ‘0’ 30 H
D1078 high ‘0’ 30 H
Content of
address 2103 H
PLC automatically convert
ASCII codes to numerals
and store the numeral in
D1052 = 0000 H