Article Details
- Title
- Naming Conventions
- ParentTitle
- Introduction
- Sequence
- 0
- Body
- In a CBI we use [b]naming conventions[/b] to readily identify what type of objects we are referring to, and, in some cases, their operation. The name does not, however, affect interlocking operation. [b]Latches[/b] L123TRTS - a latch indicating TRTS for signal 123 [b]Points[/b] P123 - a point with all ends detected together P123A - a point with the A end detected separately (P123B would also logically exist) [b]Requests[/b] QA123 - set auto working (fleeting) on signal S123 QXA123 - cancel auto working (fleeting) on signal S123 QXS123 - cancel signal S123 (either a route, or apply emergency replacement) QS123 - set automatic signal S123 to normal (non-emergency replacement) working QR123(AM) - set route R123(AM) QP123QN - call points P123 normal and set the Normal key switch QP123QC - unset the Normal and Reverse key switches on points P123 QP123QR - call points P123 reverse and set the Reverse key switch [b]Routes[/b] R123 - a route from signal 123 (no other routes) R123(A) - a route from signal 123 (multiple routes but all the same class of route) R123(M) - a main route from signal 123 (different classes of route but only one possible exit signal) R123(AM) - a main route from signal 123 (both different classes of route, and different possible exit signals) R123(A1M) - a main route from signal 123 (multiple classes and exits, and multiple paths between the same pair of entry/exit signals: also known as preferred and non-preferred routes) R123(AC) - call-on route R123(AS) - shunt route R123(AW) - warner (draw-ahead) route R123(AP) - permissive shunt route R123(ANP) - non-permissive shunt route Note: either Shunt [i]or[/i] permissive/non-permissive routes between the same pair of signals, not both. [b]Signals[/b] S123 - Signal 123 within this interlocking SEN456 - Signal EN12 in another interlocking. Note that cross-interlocking references can also be made, such as EN.S456 where the interlocking identity is EN. [b]Track Sections[/b] TXYZ - Track section XYZ [i]Note[/i] Track sections may be lettered or numbered, or a combination of both. The T prefix is recommended for both. [b]Subroutes[/b] UXYZ-AB - Subroute from the A end to the B end of track section XYZ OXYZ-CD - Suboverlap from the C end to the D end of track section XYZ
- CategoryId
- 2
- Created
- 29/07/2025 at 21:22
- Updated
- 30/07/2025 at 16:57
- Created By
- CajonRail
- Updated By
- CajonRail