Bradley Smoker PLC-5 user manual Defining a Controller Input Interrupt

Using Processor Input Interrupts 18-5

Defining a Controller Input Interrupt

To define a PII, use the controller configuration screen in your programming software.

In this PII			Status File
Configuration	Do the Following		Address
Field
Preset	Enter a preset value to determine how many conditions you want to		S:50
	occur before the interrupt. Valid range is 0 - 32,767.
	If you want the interrupt to occur every time, enter a 0 or 1.
File number	Enter the number of the program file that contains the		S:46
	PII program.
	This is the only PII parameter that you can change while the controller
	is in RUN mode.
Module group	Enter the assigned rack number and I/O group number of the input to		S:47
	monitor (e.g., 21 for rack 2, group 1). Do not enter the address. (Only
	for inputs in the controller-resident chassis).
	If the input word number specified is not in the local rack or if there is
	not an input module in the slot addressed, a minor fault bit (S:10/11)
	is set at mode transition.
Bit mask	Each module group (specified in S:47) has a control bit that is used to		S:48
	monitor the input bit.
	•	To monitor the bit, enter a 1.
	•	To ignore the bit, enter a 0.
Compare value	Each module group (specified in S:47) has a bit that is used when		S:49
	controlling a PII through bit transition.
	•	For a false to true transition to count (bit trigger), enter a 1.
	•	For a true to false transition to count (event trigger), enter a 0.

IMPORTANT

If you change the PII configuration while in run mode, you must toggle the mode to program, then back to run mode for the change to take effect.

Publication 1785-UM012D-EN-P - July 2005