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APPENDICES
A
Appendix 4 Link Special Register (SW) List
SW0130
to
SW0137
PORT2 error frame
reception status (each
station)
Stores the station number receiving an error frame on the transmission
path at each station's PORT2.
0: A line error has not yet occurred on the transmission path of the own
station's PORT2.
1: A line error has occurred on the transmission path of the own station's
PORT2.
When Clear communication error count (SB0006) is turned on, the
stored status is cleared.
(Conditions)
• This is enabled when Baton pass status (own station) (SB0047) is off.
• Holds the data immediately before the error.
• This is enabled only for normal stations in Baton pass status (each
station) (SW00A0 to SW00A7).
SW0140
to
SW0147
PORT1 error frame
detection (each station)
Stores the station number receiving an error frame on the transmission
path at each station's PORT1.
0: A line error is not currently occurred on the transmission path of the
own station's PORT1.
1: A line error is currently occurred on the transmission path of the own
station's PORT1.
When Clear communication error count (SB0006) is turned on, the
stored status is cleared.
(Conditions)
• This is enabled when Baton pass status (own station) (SB0047) is off.
• Holds the data immediately before the error.
• This is enabled only for normal stations in Baton pass status (each
station) (SW00A0 to SW00A7).
Number Name Description
Availability
Master
station
(safety
station)
Local
station
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97
120 119 118 117 116 115 114 113
Each number in the table represents a station No.
is fixed to 0.
SW0131
SW0132
SW0133
SW0134
SW0135
SW0136
SW0137
SW0130
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97
120 119 118 117 116 115 114 113
Each number in the table represents a station No.
is fixed to 0.
SW0141
SW0142
SW0143
SW0144
SW0145
SW0146
SW0147
SW0140