ADLINK PCI-8258 - Manual (Page 85)

Motion Control Theory 71
PCI-8254 / PCI-8258
4.1.1.5 Motion Control I/O
Some motion control I/O signal of this controller definition are
summarized in table below:
Here ALM, EZ and INP are signals sent by servo drive and SVON
(Servo on) signal is the receiving signal of servo drive for driving
the servo motor.
And PEL, MEL, ORG and EMG are mechanical I/O signals. Safety
relevant signals, e.g. EMG, PEL and MEL are used to work
together with motion control. Take example, the home movement
will use ORG, PEL, MEL, EZ and other signals.
You may use following API functions to get I/O status with each bit
of the parameter representing status of the axis motion control I/O.
I32 APS_set_servo_on (I32 Axis_ID, I32 Servo_on);
I32 APS_motion_status (I32 Axis_ID);
Param.
Defined
Symbol
Type Description
0 ALM Input Servo alarm
1 PEL Input Plus end limit
2 MEL Input Minus end limit
3 ORG Input Home input
4 EMG Input Emergency stop input
5 EZ Input Servo index input
6 INP Input In-Position input
7 SVON Output Servo ON output status