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FINS Commands and Responses
Section 6-4
6-4
FINS Commands and Responses
6-4-1
FINS Communications Service
The FINS communications service is a communications protocol developed
by OMRON for FA control devices. It can be used for reading from and writing
to PLC memory, or for controlling various operations, without having to create
a user’s program at the PLC. The FINS communications service has its own
independent address system which does not rely on the actual network
address system, so it can carry out communications in the same way regard-
less of whether the PLC at the local node is on a Controller Link Network or
some other FA network (e.g., SYSMAC NET or SYSMAC LINK). For details
on FINS commands, refer to the
FINS Commands Reference Manual
(W227).
6-4-2
Sending and Receiving FINS Commands and Responses
FINS commands can be sent by using the CMND instruction with a CVM1,
CV-series, CS/CJ-series, or CQM1H-series PLC. The following diagram
shows the data format for sending FINS commands and receiving responses.
The data that is sent and received is all hexadecimal unless otherwise noted.
Command
Response
Word
Word
1 byte
FINS header
Automatically prepared and added.
2 bytes
2,000 bytes max.
Command code
Text
Controller
Link Unit
CPU Unit
CS/CJ, CVM1,
CV-series,
or CQM1H-
series PLC
Computer
Controller Link
Support Board
2 bytes 2 bytes
1,998 bytes max.
FINS header
Automatically
added.
Command
code
Response
code
Text
1 byte
Response
Command
Automatically pre-
pared and added.
1 byte
1 byte
@CMND
S
S+1
S+2
15
87
D
D+1
D+2
15
87
S
D
C
0
0
Summary of Contents for C200HW-CLK21
Page 3: ...iv ...
Page 9: ...x ...
Page 12: ...xiii TABLE OF CONTENTS Index 367 Revision History 373 ...
Page 13: ...xiv ...
Page 19: ...xx ...
Page 57: ...32 Application Precautions Section 1 5 Example CX Programmer Response Timeout Setting ...
Page 69: ...44 Message Service Procedure Section 2 2 ...
Page 111: ...86 Constructing Networks with Repeater Units Section 3 4 ...
Page 154: ...129 Setting Data Links Section 5 2 Device Information Setting Data Link Tables ...
Page 261: ...236 Response Codes Section 6 7 ...
Page 297: ...272 Message Delay Times Section 8 4 ...
Page 353: ...328 Handling Precautions Section 9 6 ...
Page 364: ...339 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 365: ...340 Changing the Data Link Tables with Active Data Links Section 10 2 ...
Page 369: ...344 Standard Models Appendix A ...
Page 391: ...366 Using the Relay Terminal Block Appendix C ...
Page 397: ...372 Index ...
Page 401: ...376 Revision History ...