Temporary Error Invalid Station Specification Function - Mitsubishi FX3U User Manual

FX -16CCL-M User's Manual
3U
6.4.3

Temporary Error Invalid Station Specification Function

This function prevents remote stations and intelligent device stations that are designated not to be treated as
"data link faulty stations" while online.
It allows the replacement of modules while online without error detection.
Different from the error invalid station specification by parameter setting, temporary error invalid stations can
be temporarily specified with arbitrary timing.
1. I/O status when temporary error invalid stations are specified
In a station specified as a temporary error invalid station, all cyclic transmission data is refreshed.
2. Temporary error invalid station specification procedure
1) Select whether two or more stations are to be specified as temporary error invalid stations. (SW0003)
- 0: Two or more stations
- 01 to 16: One station
2) Set to ON the request for temporary error invalid stations. (SB0004)
3) Turn OFF the power of temporary error invalid stations, and replace them.
4) Turn ON the power of temporary error invalid stations.
5) Set to ON the request to cancel the setting of temporary error invalid stations. (SB0005)
Caution
• Even if the request for a temporary error invalid station is executed for a faulty station, the error information
is not cleared. The temporary error invalid station specification function is effective only for errors which
occur after setting.
• The request for setting temporary error invalid stations and the request for canceling of temporary error
invalid stations are not effective to stations which are specified as error invalid stations.
3. Associated link special relays/link special registers (SB/SW)
The table below shows link special relays and registers related to the temporary error invalid station
specification function.
• Link special relay (SB)
SB No.
Hex.
SB0004 5E0H
SB0005 5E0H
SB0048 5E4H
SB0049 5E4H
SB004A 5E4H
SB004B 5E4H
BFM No.
Name
Dec. Bit
Request for temporary error invalid
1504 b4
station
Request for cancel of temporary
1504 b5
error invalid station
Temporary error invalid station
1508 b8
acceptance status
Temporary error invalid station
1508 b9
completion status
Temporary error invalid station
1508 b10
completion status
Temporary error invalid station
1508 b11
cancel acceptance status
6 Introduction of Functions
Description
Determines stations specified by SW0003 or SW0004 as
temporary error invalid stations.
OFF: Does not give the request.
ON : Gives the request.
Cancels the stations specified by SW0003 or SW0004 from
temporary error invalid stations.
OFF: Does not give the request.
ON : Gives the request.
Indicates the temporary error invalid station request
acceptance status.
OFF: Not accepted
ON : Accepted
Indicates the temporary error invalid station request
acceptance completion status.
OFF: Not completed
ON : Temporary error invalid stations are determined/
Specified station number is invalid
Indicates the temporary error invalid station cancel request
acceptance status.
OFF: Not accepted
ON : Accepted
Indicates the temporary error invalid station cancel request
acceptance completion status.
OFF: Not completed
ON : Cancel of temporary error invalid stations is completed.
6.4 Handy Functions
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