46 SM-Applications Modules & Motion Processors User Guide
Issue Number: 4
The current timer value can be read and written at any time using this parameter.
This parameter specifies the value at which Pr
85.03 will wrap-around.
This parameter stores the cached value when using the timer in modes 1 or 2 (Capture
modes)
5.6 Menu 86 - Digital I/O Parameters
The SM-Applications, SM-Applications Plus and Digitax ST Plus have two digital
outputs and two digital inputs on-board. These outputs and inputs are controlled though
this menu. See Section 3 (Installation) for detailed specifications.
Pr 85.03 Timer Unit 16-bit Timer Count
Access RW Range 16 bit
Default N/A Update Rate Immediate
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Pr 85.04 Timer Unit Wrap-around limit
Access RW Range 16 bit
Default N/A Update Rate Immediate
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Setting a small wrap-around figure with the timer operating at fast rates, could result in
the Second Processor appearing to lock up. This is caused by the wrap-around interrupt
being continually serviced and starving the other product features of processor resource.
If this occurs the user can reset the Second Processor by performing a 1070 reset on the
drive. If a DPL program sets the figures for the timer then, before resetting, the program
auto-run should be disabled (Pr
xx.13=0). After the reset the user can re-initialize the
timer with a more reasonable wrap-around number.
Pr 85.05 Timer Unit Timer Capture Cache
Access RW Range 16 bit
Default N/A Update Rate Immediate
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
Pr 86.01 Digital Input 0
Access RO Range 0/1
Default N/A Update Rate Immediate
Apps Apps Lite Apps Plus Lite V2 ST Plus ST Indexer
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