App
- 24
Appendix 2 Link Special Register (SW) List
APPENDICES
SW0065
Loopback information
Stores the loop status of network.
0: Normal
1: Loopback
2: All stations faulty
SW0068
IN-side line error
occurrence rate (Max.)
Stores the rate (maximum value) of receiving error frame at the IN-side of
own station. (Unit: %)
The accumulation of errors is cleared when Clear IN-side transmission error
count (SB0007) is turned ON.
SW0069
IN-side line error
occurrence rate
(present.)
Stores the rate (present value) of receiving error frame at the IN-side of own
station. (Unit: %)
The accumulation of errors is cleared when Clear IN-side transmission error
count (SB0007) is turned ON.
SW006A
OUT-side line error
occurrence rate (Max.)
Stores the rate (maximum value) of receiving error frame at theOUT-side of
own station. (Unit: %)
The accumulation of errors is cleared when Clear OUT-side transmission
error count (SB0008) is turned ON.
SW006B
OUT-side line error
occurrence rate
(present.)
Stores the rate (present value) of receiving error frame at theOUT-side of own
station. (Unit: %)
The accumulation of errors is cleared when Clear OUT-side transmission
error count (SB0008) is turned ON.
SW006E
Number of loop
switches
Stores the number (accumulation) of switching communication paths.
When Clear loop switch count (SB0009) turns ON, the number is cleared.
SW006F
Transient transmission
error
Stores the number (accumulation) of transient transmission errors.
The number of errors is cleared when Clear transient transmission errors
(SB000A) is turned ON.
SW0070
IN-side loopback station
No.
Stores the station No. of the station where a loopback is executed at IN-side.
0: No station executes loopback
1 to 120: Station No.
(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.
SW0071
IN-side loopback factor
Stores the factor of IN-side loopback.
00
H
: No station executes loopback
02
H
: OUT-side cable disconnection
03
H
: OUT-side cable insertion error
04
H
: OUT-side line establishing
(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.4 Link special register (SW) list (Continued)
No.
Name
Description
Availability
Control
station
Normal
station
Link special register (SW): SW0065 to SW0071
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