Yaskawa FSP Amplifier FlexWorks - Manual (Page 93)

Operating the FSP Amplifier Using FlexWorks
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Interrupt_reg:
Because only bit 3 is set to 1 in the Interrupt_mask variable, only
interrupt 3 will be handled; interrupts 4 and 1 will be ignored. Only
bit 3 in Interrupt_pending will be set to 1, as it is the only bit set to
1 in both Interrupt_request and Interrupt_mask:
B IT
# 7 6 5 4 3 2 1 0
Setting 0 0 0 0 1 0 0 0
Variable value: Interrupt_pending = 8
4.11.7. Interrupt Commands
Commands are used to signal the beginning and the end of each
interrupt service routine. The commands INT and EXT_INT signal
the beginning of interrupt service routines, and specify the internal
or external interrupt conditions respectively. The command
INT_RETURN signals the end of the interrupt service routine, and
specifies the program line to which to return.
4.11.7.1. EXT_INT
Format: EXT_INT <Priority> <Input_Number> <Edge>
This command indicates the beginning of an interrupt service
routine, when the interrupt is conditional on the value of an
external input. The argument <Priority> specifies the interrupt
priority. <Priority> is specified as a value from 0 to 7, where 0 is
the highest priority and 7 is the lowest. <Input_Number> specifies
the number of the digital input to be monitored. <Edge> specifies
whether the interrupt is to be triggered when the value of the
digital input changes from 0 to 1 (Rising), from 1 to 0 (Falling), or
whenever it changes (Both).
Figure 53: Programming an EXT_INT Command