Panasonic FP Series Programming Manual page 1279

Appendix Programming Information
No. Name
Interrupt input:
404/
405 
X6 Interrupt 6
Interrupt input:
404/
405 
X7 Interrupt 7
The input modes two-phase, incremental/decremental, or
incremental/decremental control require a second channel. If channel 0, channel
2, channel 4, or channel 6 have been set to one of these modes, the settings for
channel 1, channel 3, channel 5, and channel 7, respectively, will be invalid.
Only channel 0 and channel 2 are available for the reset input of the high-speed
counter.
Input numbers X4 to X7 can be used as home input of pulse output channels 0 to
3. When using the home return function, always set the home input. In this case,
X4 to X7 cannot be used as high-speed counter inputs.
CPU outputs which have been specified as pulse output or PWM output cannot
be used as normal outputs.
If the same input has been set as high-speed counter input, pulse catch input or
interrupt input, the following order of precedence is effective: High-speed
counter  Pulse catch  Interrupt.
High-Speed Counter, Pulse-Catch Input, Interrupt Input (Relay types)
No. Name
High-speed counter:
402
Channel 0
High-speed counter:
402
Channel 1
High-speed counter:
402
Channel 2
High-speed counter:
402
Channel 3
High-speed counter:
402
Channel 4
High-speed counter:
402
Channel 5
High-speed counter:
402
Channel 6
High-speed counter:
402
Channel 7
1278
Default Values
Unused Rising edge/Falling edge
Unused Rising edge/Falling edge
Default Values
Unused  Incremental input (X0)
 Decremental input (X0)
 Two-phase input (X0, X1)
Unused  Incremental input (X1)
 Decremental input (X1)
 Two-phase input (X0, X1)
Unused  Incremental input (X2)
 Decremental input (X2)
 Two-phase input (X2, X3)
Unused  Incremental input (X3)
 Decremental input (X3)
 Two-phase input (X2, X3)
Unused  Incremental input (X4)
 Decremental input (X4)
 Two-phase input (X4, X5)
Unused  Incremental input (X5)
 Decremental input (X5)
 Two-phase input (X4, X5)
Unused  Incremental input (X6)
 Decremental input (X6)
 Two-phase input (X6, X7)
Unused  Incremental input (X7)
 Decremental input (X7)
 Two-phase input (X6, X7)