Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 312

No. Name
SB0150 PORT2 error frame reception
detection status (1)
SB0151 PORT2 error frame detection of
master station
SB0158 PORT2 error frame reception
detection status (2)
SB0159 PORT2 error frame reception
detection status of station No.0 (2)
SB015F PORT2 error frame reception
detection status of station No.0 (1)
APPX
310
Appendix 4 List of Link Special Relay (SB)
Description
Stores if a receive frame error line status caution level has occurred
in the P2 side of each station from power-on until the present.
Off: A receive frame error line status caution level has not yet
occurred in any stations.
On: A receive frame error line status caution level has occurred in
one or more stations.
If a receive frame error line status caution level has occurred, the
status of each station can be checked with 'PORT2 error frame
reception detection status (1)' (SW0150 to SW0157).
Depending on the link refresh timing, the update of 'PORT2 error
frame reception detection status (1)' (SW0150 to SW0157) may be
offset by one sequence scan.
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
Stores whether the error frame was received at the P2 side of the
master station (master operating station) from power-on to the
present.
Off: Not received
On:Received
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
Stores if a receive frame error line status warning level has occurred
in the P2 side of each station from power-on until the present.
Off: A receive frame error line status warning level has not yet
occurred in any stations.
On: A receive frame error line status warning level has occurred in
one or more stations.
If a receive frame error line status warning level has occurred, the
status of each station can be checked with 'PORT2 error frame
reception detection status (2)' (SW0158 to SW015F).
Depending on the link refresh timing, the update of 'PORT2 error
frame reception detection status (2)' (SW0158 to SW015F) may be
offset by one sequence scan.
(Conditions)
• This relay is enabled when 'Baton pass status of own station'
(SB0047) is off.
• When 'Baton pass status of own station' (SB0047) is turned on,
data prior to error is held.
Stores if a receive frame error line status warning level has occurred
in the P2 side of the station No.0 from power-on until the present.
Off: A receive frame error line status warning level has not yet
occurred.
On: A receive frame error line status warning level has occurred at
least once.
(Conditions)
• This relay is enabled when the submaster function is used.
Stores if a receive frame error line status caution level has occurred
in the P2 side of the station No.0 from power-on until the present.
Off: A receive frame error line status caution level has not yet
occurred.
On: A receive frame error line status caution level has occurred at
least once.
(Conditions)
• This relay is enabled when the submaster function is used.
Availability
Master station Local station
(submaster
station)
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