Publication 1763-RM001C-EN-P - October 2009
Knowledgebase Quick Starts
555
Pressing
will disable the RTC from functioning and
decrease the drain on the battery during storage.
# 17558 “Quick Start”
User Interrupt Disable
(UID)
The UID instruction can be used as an output instruction to disable
selected user interrupts.
Once a user interrupt is disabled the User Interrupt Enable bit (UIE) for
the selected interrupt will be cleared or reset to a zero (0). This stops the
interrupt from executing.
To re-enable an interrupt the UIE bit must be set to a one (1), or a UIE
instruction must be used.
The following table indicates the types of interrupts disabled by the UID.
RTC:0/BL
The Battery Low bit will be set (1) when the battery is low.
This means that the battery will fail in less than 14 Days after
which the RTC data may become invalid. At this time, replace
battery (The RTC uses the same battery that the controller
uses).
Interrupt
Element
Decimal Value
Corresponding Bit
Ell - Event Input Interrupts
Event 0
64
bit 6
Ell - Event Input Interrupts
Event 1
32
bit 5
HSC - High Speed Counter
HSC0
16
bit 4
Ell - Event Input Interrupts
Event 2
8
bit 3
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