Controller - Institute of Transportation Engineers

3.5.1 Design, Fabrication, and Mounting ..............................................................19
3.5.2 Soldering.......................................................................................................21
3.5.3 Definitions.....................................................................................................21
3.6 Quality Control ......................................................................................................21
3.6.1 Components ..................................................................................................21
3.6.2 Subassembly, Unit, or Module......................................................................21
3.6.3 Pre-delivery Repair .......................................................................................21
3.7 Electrical, Environmental, and Testing Requirements ..........................................22
3.7.1 General..........................................................................................................22
3.7.2 Certification ..................................................................................................22
3.7.3 Inspection......................................................................................................22
3.7.4 Environmental and Electrical........................................................................22
3.7.5 Contractor’s Testing Certification................................................................24
4 TYPE 2070 CONTROLLER UNIT.........................................................................25
4.1 General...................................................................................................................25
4.1.1 Module Descriptions.....................................................................................25
4.1.2 Unit Configuration........................................................................................25
4.1.3 Metalwork .....................................................................................................26
4.1.4 Power Limitations.........................................................................................26
4.1.5 EIA-485 Communications Circuitry.............................................................26
4.1.6 EIA-485 Line Drivers/Receivers ..................................................................26
4.1.7 MTBF Analysis Report.................................................................................27
4.1.8 Sockets ..........................................................................................................27
4.1.9 SDLC ............................................................................................................27
4.1.10 Year 2000 Compliance..................................................................................27
4.2 Type 2070-1 CPU Module .....................................................................................27
4.2.1 Type 2070 – 1A Configuration.....................................................................28
4.2.2 Type 2070 – 1B Configuration .....................................................................28
4.2.3 Main Controller Board (MCB) .....................................................................29
4.2.4 Transition Board ...........................................................................................31
4.2.5 Shielded Interface Harness............................................................................31
4.2.6 Data Key .......................................................................................................31
4.2.7 CPU Module Software..................................................................................31
4.3 Type 2070-2 Field I/O Module (FI/O)...................................................................43
4.3.1 Type 2070-2A Module..................................................................................43
4.3.2 Type 2070-2B Module..................................................................................43
4.3.3 Field Controller Unit (FCU) .........................................................................43
4.3.4 Parallel I/O Ports...........................................................................................43
4.3.5 Other Module Circuit Functions ...................................................................44
4.3.6 Serial Communications/Logic Circuitry.......................................................45
4.3.7 Buffers...........................................................................................................46
4.3.8 I/O Functions.................................................................................................46
4.3.9 Data Communications Protocols...................................................................49
4.4 Type 2070-3 Front Panel Assembly ......................................................................62
4.4.1 General..........................................................................................................62
4.4.2 Keyboards .....................................................................................................62
Standard for the ATC – Type 2070 March 29, 2001
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