Mitsubishi QJ71GP21-SX, Справочное руководство

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APPENDICES
Appendix 1 Link Special Relay (SB) List
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INDEX
SB0140
IN-side error frame
reception detection
status
Stores whether the error frame is received or not in the IN-side transmission
path of each station from power-on to the present.
OFF: All stations receive no error frame
ON: Some stations receive error frames
When error frame reception is identified, each station status can be checked in
Current IN-side error frame reception detection status (SW0140 to SW0147).
The stored value is cleared when Clear IN-side transmission error count
(SB0007) is turned ON.
(Condition)
• Valid when Baton pass status (own station) (SB0047) is OFF.
When Baton pass status (own station) (SB0047) is turned ON (error), data
prior to error is held.
SB0150
OUT-side error frame
reception detection
status
Stores whether the error frame is received or not in the OUT-side transmission
path of each station from power-on to the present.
OFF: All stations receive no error frame
ON: Some stations receive error frames
When error frame reception is identified, each station status can be checked in
Current OUT-side error frame reception detection status (SW0150 to
SW0157).
The stored value is cleared when Clear OUT-side transmission error count
(SB0008) is turned ON.
(Condition)
• Valid when Baton pass status (own station) (SB0047) is OFF.
When Baton pass status (own station) (SB0047) is turned ON (error), data
prior to error is held.
SB0160
Path switching
detection flag for each
station
Stores the path switching detection status of each station. (Including own
station)
OFF: Path switching not detected
ON: Path switching detected
When a path switching has been detected, each station status can be checked
in Path switching detection status of each station (SW0160 to SW0167).
The path switching detection status is cleared when Clear loop switch count
(SB0009) is turned ON.
The stored value is cleared when Clear loop switch count (SB0009) is turned
ON in each station and path switching detection status for all stations is
cleared.
(Condition)
• Valid when Baton pass status (own station) (SB0047) is OFF.
When Baton pass status (own station) (SB0047) is turned ON (error), data
prior to error is held.
Table App.2 Link special relay (SB) list (Continued)
No. Name Description
Availability
Control
station
Normal
station
Link special relay (SB): SB0140 to SB0160