Mitsubishi Electric MELSEC iQ-R Series User Manual page 153

No. Name
SB0090 Loop status of own station
SB0091 Forward loop (IN-side)
status
SB0095 Reverse loop (OUT-side)
status
SB0099 Forward (IN-side)
Loopback status
SB009A Reverse (OUT-side)
Loopback status
SB009C Send transmission path
mismatch status
SB00A0 RECV execution request
flag CH1
Description
Stores the transmission path status of the own station. When this relay is turned on, the
error definition can be checked with 'Loopback information' (SW0090).
Off: Normal
On: Error
(Conditions)
• This relay is turned on when a value other than 00H is set for 'Loopback information'
(SW0090).
Stores the status of the station connected to the forward loop (IN-side).
Off: All stations normal
On: Faulty station exists
When this relay is turned on, the status of each station can be checked with 'Forward
loop status of each station' (SW0091 to SW0094).
Depending on the link refresh timing, the update of 'Forward loop status of each station'
(SW0091 to SW0094) may be offset by one sequence scan.
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Stores the status of the station connected to the reverse loop (OUT-side).
Off: All stations normal
On: Faulty station exists
When this relay is turned on, the status of each station can be checked with 'Reverse
loop status of each station' (SW0095 to SW0098).
Depending on the link refresh timing, the update of 'Reverse loop status of each station'
(SW0095 to SW0098) may be offset by one sequence scan.
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Stores the loopback status for the loopback function. The station number of the forward
loop (IN-side) loopback station can be checked with 'Loopback station of forward loop
side' (SW0099).
Off: Normal (no loopback stations)
On: Error (loopback being performed)
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Stores the loopback status for the loopback function. The station number of the reverse
loop (OUT-side) loopback station can be checked with 'Loopback station of reverse loop
side' (SW009A).
Off: Normal (no loopback stations)
On: Error (loopback being performed)
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Stores the status of the transmission path used for transmission at another station.
Off: All matched
On: Inconsistent station exists
Depending on the link refresh timing, the update of 'Loop usage status of each station'
(SW009C to SW009F) may be offset by one sequence scan.
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Stores the data reception status of own station channel 1.
Off: No data received
On: Data received
(Conditions)
• This register is enabled when 'Baton pass error status of own station' (SB0047) is off.
When 'Baton pass error status of own station' (SB0047) is turned on (error), data prior
to error is held.
Appendix 3 List of Link Special Relay (SB) Areas
Availability
Control Normal
station Station
 
 
 
 
A
 
 
 
APPX
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