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.

 

 

 

 

 

 

 

 

 

 

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-

 

25

Unit error

 

 

ported)

 

 

 

 

 

 

 

 

 

 

05

Routing error

 

26

Command error

 

 

 

 

 

 

 

10

Command format error

 

30

Access error

 

 

 

 

 

 

 

11

Parameter error

 

40

Service interrupted by abort

 

 

 

 

 

 

 

20

Read not possible

 

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6-4-3 Applicable Units for FINS Commands

The parameters used with FINS commands and responses depend on the Unit to which the command is being sent. The FINS commands and responses addressed to Controller Link Units, to C200HX/HG/HE PLCs, and to CQM1H-series PLCs are explained in this manual. For explanations of FINS commands for other Units, refer to the FINS Commands Reference Manual (W227).

C200HX/HG/HE and CQM1H-series PLCs do not directly support FINS com- mands, but the Controller Link Unit automatically converts the command for- mat so that C200HX/HG/HE and CQM1H-series PLCs can process them. The Unit also converts the response format so that the response can be returned to the source of the command.

When FINS commands are sent via a Host Link System for CVM1, CV-series, or CS/CJ-series PLCs, be sure to use the command format for relaying between networks.

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Omron CS1W-RPT01 Applicable Units for Fins Commands, Command Codes, Any parameters must follow the command code