Specifications

App - 23
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
SW00B0
(176)/
SW00B1
(177)/
SW00B2
(178)/
SW00B3
(179)
Multiplex
transmission
status (1)
Stores each station's forward loop usage status during multiplex transmission.
0: Uses other than the forward loop (including the stations with the maximum station
number and smaller numbers as well as the reserved stations)
1: Uses the forward loop
16
32
48
64
15 14 13
5
4321
31 30
47 46
63 62
29
45
61
21 20 19 18 17
37 36 35
34
33
53 52 51 50 49
to
to
to
to
b15 b14 b13 b12 b4 b3 b2 b1 b0
SW00B0
SW00B1
SW00B2
SW00B3
Numbers 1 to 64 in the above table
indicate the station numbers.
to
*
2
SW00B4
(180)/
SW00B5
(181)/
SW00B6
(182)/
SW00B7
(183)
Multiplex
transmission
status (2)
Stores each station's reverse loop usage status during multiplex transmission.
0: Uses other than the reverse loop (including the stations with the maximum station
number and smaller numbers as well as the reserved stations)
1: Uses the reverse loop
16
32
48
64
15 14 13
5
4321
31 30
47 46
63 62
29
45
61
21 20 19 18 17
37 36 35
34
33
53 52 51 50 49
to
to
to
to
b15 b14 b13 b12 b4 b3 b2 b1 b0
SW00B4
SW00B5
SW00B6
SW00B7
Numbers 1 to 64 in the above table
indicate the station numbers.
to
*
2
*
3
SW00B8
(184)
UNDER on the
forward loop side
Accumulates and stores the number of "UNDER" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00B9
(185)
CRC on the
forward loop side
Accumulates and stores the number of "CRC" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00BA
(186)
OVER on the
forward loop side
Accumulates and stores the number of "OVER" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00BB
(187)
Short frame on
the forward loop
side
Accumulates and stores the number of "short frame" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00BC
(188)
Abort on the
forward loop side
(AB.IF)
Accumulates and stores the number of "AB.IF" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00BD
(189)
Timeout on the
forward loop side
(TIME)
Accumulates and stores the number of "TIME" errors on the forward loop side.
0 or more: Number of errors
*2 *3
SW00BE
(190)
Receiving 2k
bytes or more on
the forward loop
side (DATA)
Accumulates and stores the number of "DATA" errors on the forward loop side.
0 or more: Number of errors
*
2
*
3
SW00BF
(191)
DPLL error on
the forward loop
side
Accumulates and stores the number of "DPLL" errors on the forward loop side.
0 or more: Number of errors
*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.