Newport ESP6000 User Manual page 269

+P_1
The Step Output is an open collector (i.e., 7407) output pulled-up to +5
volts with a 1KΩ resistor. This output is used to control the commutation
sequence of a step motor. The motor will increment one step for each
'pulse' output.
–P_1
The Step/Direction Output is an open collector (i.e., 7407) output pulled-
up to +5 volts with a 1KΩ resistor. This output is used to control the
commutation sequence of a stepper motor. In +Step/-Step mode, the
motor will increment one step for each 'pulse' output. In Step/Direction
mode, this signal will control the direction of motor rotation.
A_1
The A_1 input is pulled-up to +5 volts with a 1KΩ resistor. The signal is
buffered with a 26LS32 differential receiver. The A_1 encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
B_1
The B_1 input is pulled-up to +5 volts with a 1KΩ resistor. The signal is
buffered with a 26LS32 differential receiver. The B_1 encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
DGND
Digital ground.
Enable_1
Open-drain output with 1KΩ pull-up resistor to +5 volts. This output is
asserted active True when the axis is in the motor ON state and False for
the motor OFF state. The actual TTL level is user-configurable.
Home_1
This input is pulled-up to +5 volts with a 1KΩ resistor by the controller.
The Home signal originates from the stage and is used for homing the
stage to a repeatable location.
I_1
The (+)Index input is pulled-up to +5 volts with a 1KΩ resistor by the
controller 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.
Appendix C — Connector Pin Assignments C - 2 3
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