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DVP-PLC Operation Manual
23
Compulsory settings in IFD9502
Parameter Set value Explanation
Node address 02 Set the node address of IFD9502 to “02".
Baud rate 500kbps
Set the communication speed of IFD9502 and bus to
“500kbps”.
Compulsory settings in VFD-B
Parameter Set value Explanation
02-00 04 The main frequency is operated on RS-485 interface.
02-01 03
The operation commands are operated on the communication
interface. Operation by keys is valid.
09-00 01 Communication address of VFD-B: 01
09-01 03 Baud rate: 38,400
09-04 03 Modbus RTU mode. Data format <8, N, 2>
Explanations on devices
Explanation
PLC device Content
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
D6250 0101Hex ReqID = 01Hex Command = 01Hex
D6251 0005Hex Port = 00Hex Size = 05Hex
D6252 0E02Hex Service Code = 0EHex MAC ID = 02Hex
D6253
0001Hex
High bye of Class ID =00Hex Low byte of Class ID = 01Hex
D6254
0001Hex
High byte of Instance ID =
00Hex
Low byte of Instance ID =
01Hex
Request
message
editing area
D6255
0001Hex
N/A Attribute ID = 01Hex
D6000 0101Hex ReqID = 01Hex Status = 01Hex
D6001 0002Hex Port = 00Hex Size = 02Hex
D6002 8E02Hex Service Code = 8EHex MAC ID = 02Hex
Response
message
editing area
D6003 031FHex
High byte of Service Data =
03Hex
Low byte of Service Data =
1FHex
(3) PLC program
MOV H0101 D6250
M1002
ZRST D6250 D6281
M0
MOV H0005 D6251
MOV
H0E02 D6252
MOV H0100 D6253
MOV H0100 D6254
MOV
H0100
D6255
ZRST D6000 D6031
Reset response message editing area
& request message editing area
ReqID = 01, Command = 01
Port = 00, Size = 05
Service Code = 0E, MAC ID = 02
Class ID to be read = 01
Instance ID to be read = 01
Attribute ID to be read = 01
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