March 2017Section 5 • Schematics5 - 2 S-100 • S-105 • S-120 • S-125 Part No. 1268494Wire Circuit LegendCircuit numbering1 Circuit numbers consist of three parts: thecircuit prefix, circuit number and circuit suffix.The circuit prefix indicates the type of circuit.The circuit number describes the functionof the circuit. The circuit suffix provides anabbreviation for the number or may be used tofurther define the function of this portion of thecircuit. It also may be used to indicate the finalend of the circuit, i.e., LS or limit sw.2 The circuit number may be used more than oncein a circuit.For Example:C 74 PL – This is the circuit for the lockoutvalve #1. C stands for control, 74 is the number of the circuit forthe primary #1 lock out valve.PL stands for Primary Lockout.S 62 BST – This is the circuit that communicates to the onboardcomputers of the machine that the boom is fully stowed. Sstands for safety, 62 is the number of the circuit for boomstowed and BST stands for Boom Stowed.P 48 LP – P stands for power. 48 is the circuit number for worklamps and LP stands for Lamp.R 48 LP – R stands for relay. In this case it is the wire that feedsthe relay coil for the work lamp. All other numbers remain thesame.Circuit prefixC .......ControlD .......DataE .......EngineG .......GaugesN .......NeutralP .......PowerR .......Relay OutputS .......SafetyV .......ValveCircuit suffixDefinition SuffixAC Generator GENAlternator Field AFAngle ANGAuxiliary Boom Valve ABVAuxiliary Forward Valve AFVAuxiliary Hydraulic Pump AHAuxiliary Platform Valve APVAuxiliary Reverse Valve ARVAuxiliary Steer/Drive Valve ASVAxle Extend Valve AXEAxle Oscillate AXOAxle Retract Valve AXRAxle Front Position FAPAxle Rear Position RAPBattery BATBoom Extended BEXBoom Stowed BSTBrake BRKBypass Valves BVCalibrate CALCAN Signal CANCAN Shield SHDCATS Module CATChain Break CNKData High DTHData Low DTLDrive Chassis Controller DCNDrive Enable DEDrive Enable Left DELDrive Enable Right DERElectrical Displacement Control EDCEnvelope Light ENVEngine Speed Select ESPEngine Status Lamp ESLEnvelope Lockout ENLExtend/retract Lockout ERLFilter Restricted FLRFilter Switch FLTFlashing Beacon FBFloat Switch FSFootswitch Signal FTSForward FWDFuel Pump FPFuel Select (gas/LP) FLFuel Solenoid FSL
