Appendix C — Connector Pin Assignments
C - 5
Cable Interlock Return
This is the return for the Cable Interlock input. This signal should be
coupled to the Cable Interlock Input at the motor driver (amplifier) side to
indicate that the 100-pin connector is properly fastened.
Digital Ground
Ground reference used for all digital signals.
E-Stop Input
The Emergency Stop input is pulled-up to +5 volts with a 1K
Ω
resistor.
When this signal is asserted the controller will perform an Emergency Stop
procedure as configured by the user. When used with the Unidriver6000
motor driver, this signal is coupled to the Stop All front panel pushbutton.
Home Input
This input is pulled-up to +5 volts with a 1K
Ω
resistor. The Home signal
originates from the stage and is used for homing the stage to a repeatable
location.
Index(+) Input
The (+)Index input is pulled-up to +5 volts with a 1K
Ω
resistor and is
buffered with a 26LS32 differential receiver. The (+)Index signal originates
from the stage and is used for homing the stage to a repeatable location.
Index(–) Input
The (–)Index input is pulled-up to +5 volts and pulled down to ground with
1KW resistors. This facilitates both single- and double-ended signal
handling into a 26LS32 differential receiver. The (–)Index signal originates
from the stage and is used for homing the stage to a repeatable location.
Encoder A(+) Input
The A(+) input is pulled-up to +5 volts with a 1K
Ω
resistor. The signal is
buffered with a 26LS32 differential receiver. The A(+) encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
Encoder A(–) Input
The A(–) input is pulled-up to +5 volts and pulled down to ground with
1K
Ω
resistors. This facilitates both single- and double-ended signal
handling into a 26LS32 differential receiver. The A(–) encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
Encoder B(+) Input
The B(+) input is pulled-up to +5 volts with a 1K
Ω
resistor. The signal is
buffered with a 26LS32 differential receiver. The B(+) encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
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