Hardware reference guide

Intelligent/Special Purpose
354
35013379 11/2011
Pulse Count
To count pulses, the module must be:
z Configured for pulse or quadrature mode.
z Configured for counter display: two 16 bit, one 32 bit, or two 32 bit counters.
z Loaded with the maximum count.
z Enabled to count, using hardwired input and software control bits.
Pulse Count and Turning Outputs On/Off
To count pulses and turn outputs on and off, the module must be:
z Configured for pulse or quadrature mode.
z Configured for two 16 bit or one 32 bit counter.
z Configured to assert or not assert outputs at the programmed count values when
the module loses communication with the bus (fault condition).
z Configured to specify if outputs turn on at a setpoint or maximum count, turn on
at those points for a specific amount of time, or remain latched. If latched, outputs
can only be reset by a hard wired input.
z Loaded with setpoint values, maximum count values, and output assert time.
z Enabled to count using hardwired input and software control bits.
Counter Rollover Examples for Pulse Input
Count is from 0 -> 10 (Maximum Count)
Output A turns on at Setpoint = 5
Output B turns on after Input Count = Maximum (Terminal) Count = 10