UTC System Handbook - Siemens

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System Handbook for an STC UTC System 666/HE/16940/000 3. EQUIPMENT IDENTIFICATION 3.1 Identifying single items of equipment 3.1.1 UTC Equipment Each item of equipment within the UTC System has a System Code Number (SCN) associated with it. This is made up of a letter indicating the type of equipment and a 5-digit code. The equipment type letters are as follows: A - All equipment C - Car park D - Counting detector E - TC12 PC F - Special facility / Plan associated sign G - Green Wave Route H - Computer hardware J - Junction controller K - NMCS II equipment L - Tidal/Tunnel Flow controller M - Message Sign N - SCOOT Node, Link, Stage or Detector P - Pelican controller Q - Queue detector R - SCOOT region S - Car park sign T - Terminal (VDU / PC Workstation / Printer) U - Diversion V - Diversion Sign W - Analogue Sensor X - Outstation Transmission Unit (OTU) Y - Outstation Monitoring Unit (OMU) Z - Remote Request. The 5 digits of the SCN are of the form: SSGOE where the letters signify: 666-HE-16940-000.doc Issue 31 Page 14
System Handbook for an STC UTC System 666/HE/16940/000 SS the sub- 3 area associated with the piece of equipment. G which group in the sub-area is associated with the equipment. In this context "group" can be viewed as a "sub-sub-area" O which OTU in the group is associated with the piece of equipment E this digit allows equipment of the same type to be connected to one OTU. Normally this has the value 1; however for OTUs with more than one junction, count detector etc., each piece of equipment is given a different value. For example: J12345 refers to junction number 5 of OTU 4 in group 3 of sub-area 12. Particularly during Data Preparation the last three digits are known collectively as GOE, for Group, OTU and Equipment. These digits are used to allow wildcarding 4 , see section 3.2 for more information. For all items of outstation equipment the "GOE" digits must be non-zero apart from the "E" digit for OTUs, which is always zero. For instation equipment the first two digits of the SCN define the computer (01- 08, 99). In particular the digits 01 identify the computer as TCCA, see section 11.2, 02 as computer TCCB and 99 as the TMC. For the computer itself the "GOE" digits are always zero, for terminals they indicate the terminal number. For example: H01000 refers to computer number 1, TCCA. This may also be the TMC, see section 11.1. H99000 refers to the TMC. T02001 refers to the first terminal port on computer number 02, TCCB. In the exceptional circumstances where 6 digit SCNs are used the sub-area has 3 disits rather than 2. 3.1.2 SCOOT Equipment Identification The SCN, used to identify elements recognised by the SCOOT sub-System, consists of a prefix letter followed by a reference name. The components of the SCOOT SCN are described in reference 1.3.2(e). For regions 5 the prefix letter is "R" and the reference name two letters, for example: RLA Region LA 3 It should be noted that all the equipment for one sub-area must be contained within one Traffic Control Computer (TCC). 4 For both green waves and diversions the 5 digits have no specific meaning and hence cannot be wildcarded for use during control. 5 Note that SCOOT regions must be completely contained within a TCC. 666-HE-16940-000.doc Issue 31 Page 15
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UTC System Handbook - Siemens

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