< 5. Ladder Program Training >
5-26
TI 34M6A82-01E
2nd Edition : Nov. 1, 2002-00
5.3.6 Debug
Functions
The debugging functions are as follows:
- Forced set/reset of relays
- Change data in word/long word units for registers and relays
- Change current value of timers/counters
- Change set value of timer/counters
- Stop
refresh
- Start/stop
block
The debugging functions can be used when the CPU module’s operation mode is in
debug mode or stop mode.
Forced Setting/Resetting Relays
Forced set/reset forces the specified relay device on or off. A total of up to 32 relay
devices can be forced set/reset. The forced set/reset can be carried out on the program
monitor or the device monitor screens.
Devices that can be Forced Set/Reset
Devices that can be forced set/reset are as follows:
- Input relay X
- Output
relay
Y
- Internal relay I, /I
- Shared relay and extended shared relay E
- Link relay L
- Special relay M (write-enabled relays)
- Timer (time-up relay) T, /T
- Counter (count-up relay) C, /C
CAUTION
- Do not attempt to carry out a forced set/reset on any special relays that are not
write-enabled. Otherwise, it may stop the CPU. See the “Sequence CPU Instruction
Manual-Functions (IM34M6P12-03E)” for more details.
- Up to 32 devices can be forced set/reset. Any forced set/reset beyond the maximum
will be ignored.
- Devices with index modification cannot be forced set/reset