Level Trigger - Mitsubishi Electric MELSEC iQ-R User Manual

Level trigger

When a value in the monitored buffer memory area of the A/D converter module satisfies a preset condition, a hold trigger is
generated.
A level trigger is monitored on the updating cycle of a digital output value or a digital operation value.
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 in 'CH1 Trigger data' (Un\G543).
Item
'CH1 Trigger data' (Un\G543)
To monitor a device value of a module other than the A/D converter 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)) in 'CH1 Trigger data' (Un\G543).
• Write a value of the device to be monitored in Level data (Un\G90 to Un\G99) with the MOV instruction.
Item
Level data (Un\G90 to Un\G99)
Ex.
Application example of Level data (Un\G90 to Un\G99)
To monitor the data register D100 in the CPU module and operate the level trigger in CH1, create a program as follows.
1.
Set 91 (buffer memory address of Level data 1) in 'CH1 Trigger data' (Un\G543) (when Level data 1 is used).
2.
Store the storage data of D100 in 'Level data 1' (Un\G91) with a program continuously.
• Specify appropriate monitor data such as 'CH1 Digital output value' (Un\G400), 'CH1 Digital operation value'
(Un\G402), or Level data (Un\G90 to Un\G99) in 'CH1 Trigger data' (Un\G543). When a setting area or a
system area is specified, the normal operation is not guaranteed.
• When Process alarm (upper limit warning) (4), Process alarm (lower limit warning) (5), or Process alarm
(upper limit warning/lower limit warning) (6) is set in 'CH1 Level trigger condition setting' (Un\G542), setting
'CH1 Trigger data' (Un\G543) and Level data (Un\G90 to Un\G99) is not required.
Setting range
0 to 9999
Setting range
-32768 to 32767
1.14 Normal Logging Function
1
1 FUNCTIONS
81