Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 382

Level trigger
When a value in the monitored buffer memory area of multiple input module satisfies a preset condition, a hold trigger is
generated.
The level trigger is monitored at the conversion cycle.
■Initial setting of a level trigger
[Setting a target to be monitored]
As a condition to generate a hold trigger, set the buffer memory address to be monitored to 'CH1 Trigger data' (Un\G541).
Item
'CH1 Trigger data' (Un\G541)
To monitor a device value of a module other than multiple input module such as a device of the CPU module, set as follows.
• Set a value between 90 and 99 ('Level data ' (Un\G90 to Un\G99)) to 'CH1 Trigger data' (Un\G541).
• Write a value of the monitored device to 'Level data ' (Un\G90 to Un\G99) by using the MOV instruction.
Ex.
Application example of 'Level data 1' (Un\G91)
To monitor the data register D100 in the CPU module and generate the level trigger in CH1, create a program as follows.
• Set 'CH1 Trigger data' (Un\G541) to 91 (buffer memory address of Level data 1) (when Level data 1 is used).
• Store the storage data of D100 in 'Level data 1' (Un\G91) by the program continuously.
SM400
• Specify an appropriate data such as 'CH1 Digital output value' (Un\G400), 'CH1 Digital operation value'
(Un\G402), or Level data (Un\G90 to Un\G99) to 'CH1 Trigger data' (Un\G541). When a setting area or a
system area is specified, the normal operation is not guaranteed.
• If other than 0 to 9999 is set for 'CH1 Trigger data' (Un\G541), an error occurs. A trigger data setting range
error (error code: 1D6H) is stored in 'Latest error code' (Un\G0), 'Error flag' (Un\G69, b15) and the
ERROR LED turns on.
3 FX5-8AD
380
3.4 Functions
MOV D100 Un\G91
Setting range
0 to 9999