Specifications

App - 24
Link special register (SW) list (Continued)
Use permitted/prohibited
Control
station
Normal
station
Remote
master
station
Remote
I/O
station
Number Name Description
Optical Coaxial Optical Coaxial Optical Coaxial Optical Coaxial
*
2
*
3
SW00C0
(192)
UNDER on the
reverse loop side
Accumulates and stores the number of "UNDER" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C1
(193)
CRC on the
reverse loop side
Accumulates and stores the number of "CRC" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C2
(194)
OVER on the
reverse loop side
Accumulates and stores the number of "OVER" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C3
(195)
Short frame on
the reverse loop
side
Accumulates and stores the number of "Short frame" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C4
(196)
Abort on the
reverse loop side
(AB.IF)
Accumulates and stores the number of "AB.IF" errors on the reverse loop side.
0 or more: Number of errors
*2 *3
SW00C5
(197)
Timeout on the
reverse loop side
(TIME)
Accumulates and stores the number of "TIME" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C6
(198)
Receiving 2k
bytes or more on
the reverse loop
side (DATA)
Accumulates and stores the number of "DATA" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
3
SW00C7
(199)
DPLL error on the
reverse loop side
Accumulates and stores the number of "DPLL" errors on the reverse loop side.
0 or more: Number of errors
*
2
*
4
SW00C8
(200)
Number of retries
on the forward
loop side
Accumulates and stores the number of retries on the forward loop side.
0 or more: Number of errors
*
2
*
4
SW00C9
(201)
Number of retries
on the reverse
loop side
Accumulates and stores the number of retries on the reverse loop side.
0 or more: Number of errors
*
2
*
5
SW00CC
(204)
Line error on the
forward loop side
Accumulates and stores the number of detected line errors on the forward loop side.
0 or more: Number of detected line errors
*
2
*
6
SW00CD
(205)
Line error on the
reverse loop side
Accumulates and stores the number of detected line errors on the reverse loop side.
0 or more: Number of detected line errors
*
2
*
7
SW00CE
(206)
Number of loop
switching
Accumulates and stores the number of loop checks conducted.
0 or more: Number of loop switching
*
2
*
7
SW00CF
(207)
Loop switching
data pointer
Stores the pointer that indicates the next loop switching data.
0 to 15: Loop switching data (SW00D0 to SW00DF)
*2: Valid only when SB0047 is off (normal). When it turns on (error), the last data are retained.
*3: To reset the SW00B8 to SW00C7, turn on the SB0006.
The number of times information stored in SW00B8 to SW00C7 will not cause any problems if they are counted up gradually over a long
period of time.
If they are counted up rapidly in a short period of time (while monitoring with GX Developer, etc.), the cable may be faulty.
*4: This may be counted up at power on/reset, but it is not an error.
Clear with the SB0005 when the number of retries is not required before starting data linking.
*5: To reset the SW00CC, turn on the SB0007.
*6: To reset the SW00CD, turn on the SB0008.