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Rails of Sheffield

Rails of Sheffield - News

Detecting Trains

Allocation of Block Detectors

The block detection sections were numbered on the track plan. Each also belongs to a lettered power zone. A large spreadsheet was used to work out how best to allocate these to the BDL168 block detector outputs; each BDL168 provides 4 groups of 4 detectors, but each group  can only be powered by one power zone.

 

Track feed number Power Zone Rev? Track Location Sensor number Wire Label
1 S   Green line Fiddle yard track 5 22,13 S1
2 P   Green line Fiddle yard track 1, exit end 21,1 P2
3 P   Green line Fiddle yard track 2, exit end 21,2 P3
4 P   Green line Fiddle yard track 3 21,3 P4
5 P   Green line Fiddle yard track 4 21,4 P5
6 R   Orange line Fiddle yard track 1, exit end 21,9 R6
7 R   Orange line Fiddle yard track 2, exit end 21,10 R7
8 R   Orange line Fiddle yard track 3 21,11 R8
9 R   Orange line Fiddle yard track 4 21,12 R9
10 S   Orange line Fiddle yard track 5 22,14 S10
11 N Y Reverse loop near Petersfield 22,9 N11
12 L   Green line exit from fiddle yard 23,1 L12
13 M   Orange line entry to fiddle yard 24,1 M13
14 L   Green line Clanfield junction area 23,3 L14
15 L   Green line after Clanfield junction 23,4 L15
16 M   Orange line approach to Clanfield junction 24,3 M16
17 K   Approach road into Clanfield 22,1 K17
18 K   Exit road from Clanfield 22,2 K18
19 K   Clanfield platform 3 22,3 K19
20 K   Clanfield platform 2 22,4 K20
21 K   Clanfield platform 1 22,5 K21
22 L   Green line exit after junction from Petersfield loop 23,6 L22
23 G   Orange line storage road 1 25,9 G23
24 G   Orange line storage road 2 25,10 G24
25 C   Green line storage road 1 25,5 C25
26 C   Green line storage road 2 25,6 C26
27 C   Green line exit from storage road 26,15 C27
28 C   Green line at foot of Butser Hill 26,16 C28
29 G   Orange line at foot of Butser Hill 26,1 G29
30 G   Approach to Portsmouth Loop 26,9 G30
31 G   Orange line running under Butser Hill 26,3 G31
32 G   Exit from Portsmouth Lop 26,4 G32
33 D Y Portsmouth loop line 1 27,13 D33
34 F Y Portsmouth loop line 2 27,9 F34
35 E Y Portsmouth loop line 3 27,5 E35
36 C   Portsmouth line junction to Green line 25,7 C36
37 G   Portsmouth line junction to Orange line 26,7 G37
38 C   Green line to junction for Portsmouth 25,8 C38
39 G   Orange line from junction for Portsmouth 26,6 G39
40 M   Approach road into Eastleigh 24,12 M40
41 M   Orange line by junction for Eastleigh 24,11 M41
42 L   Green line approach to Petersfield 23,9 L42
43 L   Petersfield Platform 1 23,10 L43
44 L   Petersfield Platform 2 23,11 L44
45 L   Petersfield Platform 3 23,12 L45
46 M   Petersfield Platform 4 24,5 M46
47 M   Petersfield Platform 5 24,6 M47
48 M   Orange line exit from fiddle yard 24,7 M48
49 L   Green line entry to fiddle yard 23,16 L49
50 B   Eastleigh depot stand 1 25,1 B50
51 B   Eastleigh depot stand 2 25,2 B51
52 A   Approach road into Portsmouth 28,1 A52
53 A   Exit road from Portsmouth 28,2 A53
54 A   Portsmouth platforms to throat, incoming 28,3 A54
55 A   Portsmouth platforms to throat, outgoing 28,4 A55
56 B   Portsmouth ladder junction to goods area 27,1 B56
57 A   Portsmouth Platform 1 28,5 A57
58 A   Portsmouth Platform 2 28,6 A58
59 A   Portsmouth Platform 3 28,7 A59
60 A   Portsmouth Platform 4 28,8 A60
61 A   Portsmouth Platform 1 START 28,13 A61
62 A   Portsmouth Platform 2 START 28,14 A62
63 B   Eastleigh depot stand 1 STOP 25,3 B63
64 B   Eastleigh depot stand 2 STOP 25,4 B64
65 A   Portsmouth Platform 1 STOP 28,9 A65
66 A   Portsmouth Platform 2 STOP 28,10 A66
67 A   Portsmouth Platform 3 STOP 28,11 A67
68 A   Portsmouth Platform 4 STOP 28,12 A68
69 A   Portsmouth Platform 3 START 28,15 A69
70 A   Portsmouth Platform 4 START 28,16 A70
71 C   Green line at foot of Butser Hill STOP 26,14 C71
72 G   Orange line running under Butser Hill STOP 26,2 G72
73 C   Green line storage road 1 STOP 25,13 C73
74 C   Green line storage road 2 STOP 25,14 C74
75 G   Orange line storage road 1 STOP 25,11 G75
76 G   Orange line storage road 2 STOP 25,12 G76
77 L   Green line after Clanfield junction STOP 23,5 L77
79 M   Orange line approach to Clanfield junction STOP 24,2 M79
80 L   Green line exit from fiddle yard STOP 23,2 L80
81 K   Clanfield platform 3 STOP 22,6 K81
82 K   Clanfield platform 2 STOP 22,7 K82
83 K   Clanfield platform 1 STOP 22,8 K83
84 P   Green line Fiddle yard track 1 STOP, exit end 21,5 P84
85 P   Green line Fiddle yard track 2 STOP, exit end 21,6 P85
86 P   Green line Fiddle yard track 3 STOP 21,7 P86
87 P   Green line Fiddle yard track 4 STOP 21,8 P87
88 N Y Reverse loop near Petersfield block 1 STOP 22,10 N88
89 S   Orange line Fiddle yard track 5 STOP 22,15 S89
90 R   Orange line Fiddle yard track 1 STOP, exit end 21,13 R90
91 R   Orange line Fiddle yard track 2 STOP, exit end 21,14 R91
92 R   Orange line Fiddle yard track 3 STOP 21,15 R92
93 R   Orange line Fiddle yard track 4 STOP 21,16 R93
94 L   Petersfield Platform 1 STOP 23,13 L94
95 L   Petersfield Platform 2 STOP 23,14 L95
96 L   Petersfield Platform 3 STOP 23,15 L96
97 M   Petersfield Platform 4 STOP 24,9 M97
98 M   Petersfield Platform 5 STOP 24,10 M98
99 C   Portsmouth line junction to Green line STOP 25,15 C99
100 C   Green line to junction for Portsmouth STOP 25,16 C100
101 G   Portsmouth line approach STOP 26,8 G101
102 D Y Portsmouth loop line 1 STOP 27,14 D102
103 F Y Portsmouth loop line 2 STOP 27,10 F103
104 E Y Portsmouth loop line 3 STOP 27,6 E104
105 G   Orange line from junction for Portsmouth STOP 26,5 G105
106 L   Reverse loop near Petersfield block 2 23,8 L106
107 L   Green line approach to Petersfield 23,7 L107
108 M   Orange line by junction for Eastleigh 24,4 M108
109 C   Green line behind Butser hill 26,13 C109
110 G   Orange line behind Butser hill 26,10 G110
111 M   Orange line approach to junction for Petersfield loop 24,8 M111
112 S   Green line Fiddle yard track 5 STOP 22,16 S112
113 R   Orange line Fiddle yard track 1, approach end 20,1 R113
114 R   Orange line Fiddle yard track 1 STOP, approach end 20,2 R114
115 R   Orange line Fiddle yard track 2, approach end 20,3 R115
116 R   Orange line Fiddle yard track 2 STOP, approach end 20,4 R116
117 P   Green line Fiddle yard track 1, approach end 20,5 P117
118 P   Green line Fiddle yard track 1 STOP, approach end 20,6 P118
119 P   Green line Fiddle yard track 2, approach end 20,7 P119
120 P   Green line Fiddle yard track 2 STOP, approach end 20,8 P120
121 B   Eastleigh depot far end headshunt 161,2 B121
122 B   Eastleigh depot run past loop 161,3 B122
123 B   Eastleigh depot near end headshunt 161,4 B123
124 B   Eastleigh depot sidings 161,5 B124
125 B   Eastleigh depot stand 1 START 27,2 B125
126 B   Eastleigh depot stand 2 START 27,3 B126
127 B   Portsmouth station loco spur 27,4 B127
128 B   Main throat area for Portsmouth contained yard 29,1 B128
129 B   Portsmouth yard head shunt START 29,2 B129
130 B   Access road to turntable at Portsmouth engine shed 29,3 B130
131 B   Turntable bed in Portsmouth engine shed 29,4 B131
132 B   Portsmouth turntable road 1 29,5 B132
133 B   Portsmouth turntable road 2 29,6 B133
134 B   Portsmouth container yard road 1 START 29,7 B134
135 B   Portsmouth container yard road 2 START 29,8 B135
136 B   Portsmouth container yard road 1 29,9 B136
137 B   Portsmouth container yard road 2 29,10 B137
138 B   Portsmouth container yard road 1 STOP 29,11 B138
139 B   Portsmouth container yard road 2 STOP 29,12 B139
140 B   Portsmouth container yard runaround 29,13 B140
141 B   Portsmouth container hard shunt at far end 29,14 B141
142 B   Portsmouth carriage siding road 1 START 29,15 B142
143 B   Portsmouth carriage siding road 2 START 29,16 B143
144 B   Portsmouth carriage siding road 1 30,1 B144
145 B   Portsmouth carriage siding road 2 30,2 B145
146 B   Portsmouth contained yard runaround START 30,4 B146
147 B   Portsmouth contained yard runaround STOP 30,3 B147
148 B   Portsmouth yard headshunt middle 30,5 B148
149 B   Portsmouth yard headshunt STOP 30,6 B149
150 K   Clanfield platform 1 START 162,1 K150
151 B   Portsmouth carriage siding road 1 STOP 30,8 B151
152 B   Portsmouth carriage siding road 2 STOP 30,9 B152
153 B   Portsmouth engine shed road 1 30,10 B153
154 B   Portsmouth engine shed road 2 30,11 B154
155 K   Clanfield factory 162,2 K155
156 K   Clanfield Factory STOP 162,3 K156
157 K   Clanfield Shunter end 162,4 K157
158 G   Eastleigh junction to Portsmouth approach 26,11 G158
159 G   Orange 1 STOP 26,12 G159
160 C   Green 4 STOP 158,1 C160

 

Sensors 113-120 are connected to 2xBD4, wired to SIGM20 #6

Sensors 121-124 are connected to a BD4, wired to DAC20 #7, inputs 2-5

sensors 150, 155-157 are connected to a BD4, wired to DAC20 #6. 

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