Omron CVM1-CLK21, Operation Manual

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FINS Commands and Responses Section 6-4
Command Codes The command code consists of two bytes of data, and indicates the contents
of the command. A FINS command must begin with a 2-byte command code,
and any parameters must follow the command code.
Response Codes The response code consists of two bytes of data, and indicates the result of
the command execution. The first byte is the MRES (main response code),
which indicates the broad classification of the execution result. The second
byte is the SRES (sub-response code), which gives the detailed classification.
The following table shows the main response codes and the execution results.
For a more detailed listing of response codes, including the sub-response
codes, refer to 6-7 Response Codes.
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 PC
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
MRES Execution result MRES Execution result
00 Normal completion 21 Write not possible
01 Local node error 22 Not executable in current mode
02 Destination node error 23 No unit
03 Communications controller error 24 Start/stop not possible
04 Not executable (service not sup-
ported) 25 Unit error
05 Routing error 26 Command error
10 Command format error 30 Access error