add a level of protection from exceeding the machines travel limits. The SoftwareTravelLimitMinusActive source (output function) is active when the SoftwareTravelLimitMinusPosn is reached or exceeded. Motion is halted using the TravelLimitDecel whenever a hardware or software travel limit is hit or exceeded. Software travel limits are not active unless Absolute Position Valid is active.

Software Travel Limit Minus Active

SoftwareTravelLimitMinusActive

The SoftwareTravelLimitMinusActive source is active when the SoftwareTravelLimitMinusPosn is reached or exceeded. Motion will come to a stop using the TravelLimitDecel ramp. Software travel limits are not active unless enabled and Absolute Position Valid is active.

Software Travel Limit Minus Position

SoftwareTravelLimitMinusPosn

The SoftwareTravelLimitMinusActive source will activate when the SoftwareTravelLimitMinusPosn is reached or exceeded. Motion will come to a stop using the TravelLimitDecel. Software travel limits are not active unless enabled and Absolute Position Valid is active.

Software Travel Limit Plus Active

SoftwareTravelLimitPlusActive

The SoftwareTravelLimitPlusActive source is active when the SoftwareTravelLimitPlusPosn is reached or exceeded. Motion will come to a stop using the TravelLimitDecel ramp. Software travel limits are not active unless enabled and Absolute Position Valid is active.

Software Travel Limit Plus Position

SoftwareTravelLimitPlusPosn

The SoftwareTravelLimitPlusActive source is active when the SoftwareTravelLimitPlusPosn is reached or exceeded. Motion is halted using the TravelLimitDecel whenever a hardware or software travel limit is hit or exceeded. Software travel limits are not active unless enabled and Absolute Position Valid is active.

Unidrive SP I/O Status Word

SPConnect.DigitalIOReadWord

This parameter is a bitmap that contains the status of the digital I/O on the Unidrive SP. This parameter is read-only and is used to control the virtual LED’s on the Drive I/O Setup view.

Unidrive SP Encoder Supply Voltage

SPDrive.EncoderSupplyVoltage

The Unidrive SP is capable of supporting multiple voltage

levels for external encoders. This parameter defines the supply voltage put out to the external encoder and can be found on the Hardware > Drive / Encoder view in PowerTools Pro EZ. For all of the standard motors offered in the Motor Type list box, the Encoder Supply Voltage should be set to 5V (default). This parameter is read-only from within a user program.

Unidrive SP Encoder Revolution Counter

SPDriveEncRevCount

This read-only parameter displays the number of whole revolutions that the motor encoder signal has moved since powered up (absolute) and can be found on the Online tabs on the Status and Position views. The units for this parameter are always revolutions since those are the units used by the Unidrive SP and its’ option modules. The value for this parameter comes from parameter 3.28 of the Unidrive SP database.

Unidrive SP Fine Encoder Position

SPDriveEncRevFinePosition

This read-only parameter displays the number of fractions of a revolution that the master encoder signal has moved, and can be found on the Online tabs of the Status and Position views. The units for this parameter are always 1/

(232) of a revolution since those are the units used by the Unidrive SP and its’ option modules. The value for this parameter comes from parameter 3.30 of the Unidrive SP database.

Early releases of the SM-EZMotion module do not support use of high resolution encoders. Therefore, the value for this parameter will always be displayed as 0.

Unidrive SP Encoder Position

SPDriveEncRevPosition

This read-only parameter displays the number of fractions of a revolution that the master encoder signal has moved, and can be found on the Online tabs of the Status and Position views. The units for this parameter are always 1/

(216) of a revolution since those are the units used by the Unidrive SP and its’ option modules. The value for this parameter comes from parameter 3.29 of the Unidrive SP database.

Unidrive SP Drive Status Bitmap

SPDriveStatus

The SPDriveStatus parameter is a decimal value that equates to the state of the Status Bits in the Unidrive SP. This is a read-only parameter and is read directly from parameter 10.40 in the Unidrive SP database. The individual bits in the bitmap are detailed below

Bit 15 = Not Used

Not Used

Bit 14 = Parameter 10.15Mains Loss

Parameter Descriptions

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Emerson P/N 400361-00 manual SoftwareTravelLimitMinusActive, SoftwareTravelLimitMinusPosn, SoftwareTravelLimitPlusActive