ADLINK PCI-8164 - Manual (Page 121)

Operation Theory 109
4.2.2 ALM
The processing of the ALM signal is a hardware built-in procedure,
and it is designed to interact with the alarm signal of the servomo-
tor driver.
The ALM signal is an output signal from servomotor driver. Usu-
ally, it is designated to indicate when something is wrong with the
driver or motor.
The ALM pin receives the alarm signal output from the servo
driver. The signal immediately stops the card from generating any
further pulses or stops it after deceleration. If the ALM signal is in
the ON status at the start of an operation, the card generates the
INT signal and does not generate any command pulses. The ALM
signal may be a pulse signal with a minimum time width of 5 micro-
seconds.
Setting the parameters “alm_logic” and “alm_mode” of the
_8164_set_alm function can alter the input logic of the ALM.
Whether or not the 8164 is generating pulses, the ALM signal
allows the generation of the INT signal. The ALM status can be
monitored by using the software function:
_8164_get_io_status(). The ALM signal can generate an
IRQ if the interrupt service is enabled. Refer to section 4.7.
Related functions:
X
_8164_set_alm(): Refer to section 6.12
X
_8164_get_io_status(): Refer to section 6.13