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Number
Name
PORT2 receive error
SW006B
occurrence rate (own
station) (present)
Master operating
SW006D
station number
Submaster operating
SW006E
station number
Loopback station
SW0070
number 1
Loopback station
SW0071
number 2
PORT1 cable
SW0074
disconnection
detection count
Description
Stores the occurrence rate (current value) of received error frames at the
own station's PORT2. (Unit: %)
When Clear communication error count (SB0006) is turned on, the
stored occurrence rate is cleared.
Stores the station number of a master operating station.
0: No submaster function setting
1 to 120: The submaster station is operating as a master operating
station.
125: The master station is operating as a master operating station.
(Condition)
This is enabled when Baton pass status (own station) (SB0047) is off.
Stores the station number of a submaster operating station.
0: No submaster function setting
1 to 120: The submaster station is operating as a submaster operating
station.
125: The master station is operating as a submaster operating station.
(Condition)
This is enabled when Baton pass status (own station) (SB0047) is off.
Stores the number of the station where loopback is being performed. The
other loopback station number can be checked by Loopback station
number 2 (SW0071).
0: No loopback stations
1 to 120: Slave station, submaster station
125: Master station
255: Station number not set
If loopback occurs at a station whose station number is duplicated, the
station number is stored in this register.
(Condition)
• This is enabled when Baton pass status (own station) (SB0047) is off
and Network configuration mismatch occurrence status (SB0098) is
off.
Stores the number of the station where loopback is being performed. The
other loopback station number can be checked by Loopback station
number 1 (SW0070).
0: No loopback stations
1 to 120: Slave station, submaster station
125: Master station
255: Station number not set
If loopback occurs at a station whose station number is duplicated, the
station number is stored in this register.
(Condition)
• This is enabled when Baton pass status (own station) (SB0047) is off
and Network configuration mismatch occurrence status (SB0098) is
off.
Stores the (cumulative) count that was detected for cable disconnections
at the PORT1.
When Clear communication error count (SB0006) is turned on, the
stored count is cleared.
When FFFF
is counted, the value returns to 0 and the module
H
continues to count.
APPENDICES
Availability
Master
station
Local
(submaster
station
station)
(Master
×
operating
station only)
(Master
×
operating
station only)
501
A
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Troubleshooting
