3.2 I/O Signal Connections3-173 Wiring and Connection3.2 I/O Signal ConnectionsThis section describes the names and functions of I/O signals (CN1). Also terminal layout and connectionexamples by control method are shown.3.2.1 I/O Signal (CN1) Names and FunctionsThe following table shows the names and functions of I/O signals (CN1).(1) Input SignalsNote 1. Pin numbers in parentheses () indicate signal grounds.2. The functions allocated to /S-ON, /P-CON, P-OT, N-OT, /ALM-RST, /P-CL, /N-CL, and /P-DET input signalscan be changed by using the parameters. Refer to 3.3.1 Input Signal Allocations.ControlMethodSignalName Pin No. FunctionRefer-enceSectionCommon/S-ON 40 Servo ON/OFF: Turns ON/OFF the servomotor. 5.2.1/P-CON 41Function selected by parameter. −Proportional controlreferenceSwitches the speed control loop from PI (proportional/integral) to P (proportional) control when ON. 6.8.4Direction reference For the internal set speed selection: Switches the movementdirection. 5.6.1Control switching 5.7.3Zero-clamp reference Speed control with zero-clamp function: Referencespeed is zero when ON. 5.3.5Reference pulseblockPosition control with reference pulse stop: Stops referencepulse input when ON. 5.4.7P-OTN-OT4243Forward runprohibited,Reverse runprohibitedOvertravel prohibited: Stops servomotor when movable parttravels beyond the allowable range of motion. 5.2.3/P-CL/N-CL4546Function selected by parameter. 5.10.1Forward externalforce limit ON,Reverse externalforce limit ONForce limit function used when ON. 5.8.25.8.4Internal speedswitchingWith internal reference speed selected: Switches theinternal speed settings. 5.6.1/ALM-RST 44 Alarm reset: Releases the servo alarm state. −+24VIN 47Control power supply input for sequence signals: The 24 V power supply is notincluded.Allowable voltage fluctuation range: 11 to 25 V3.4.2SEN 4 (2) Initial data request signal when using an absolute encoder. 5.9.2Speed V-REF 5 (6) Inputs speed reference. Input voltage range: ± 12 V max. 5.3.15.5.3PositionPULS/ PULSSIGN/SIGN781112Input pulse modes: Set one of them.• Sign + pulse string• CCW/CW pulse• Two-phase pulse (90° phase differential)Reference pulse input for only line driver5.4.1CLR/CLR1514 Position error pulse clear: Clears position error pulse during position control. 5.4.2Force T-REF 9 (10) Inputs force reference. Input voltage range: ± 12 V max.5.5.15.8.35.8.5Position ↔ speedPosition ↔ forceForce ↔ speedEnables control switching.
