F (Digital Flag) - Rievtech xLogic ELC Series User Manual

5.2.8 F (digital flag)

Fashion: Classic:
Flags are used when xLogic works in a communication system. F is digital flag which is used to save
/transfer signal 1 or 0(data format is Bit) and AF is analog flag which is used to save /transfer analog
values (data format is Signed short) between the master and slave devices. Up to 32(ELC-6),
128(PR-12/ELC-22/ELC-26) can be used when programming. In your block configuration, you can assign
a new number to the flag, provided this flag number does not already exist in your circuit program.
The output always carries the signal of the previous program cycle. This value does not change if the
communication has failed.
Startup flag: F8
The F8 flag is set in the first cycle of the user program and can thus be used in your circuit program as
a startup flag. It is reset after the first program execution cycle.
In the subsequent cycles, the F8 flag reacts in the same way as the F1 to F64 flags.
Backlight flags: F64
The F64 flag controls the backlight of the xLogic display or the ELC-43T backlight.
You can use the outputs of timers, message texts, or other function blocks to activate the backlight flags.
To enable multiple conditions to control the backlight of the devices, you can use multiple function blocks
in parallel or in sequence.
Buzzer of ELC-43TS control flag:F63
Notes: 1.The address of " F" can be found in the modbus communication protocol file . the F block figure
must have the input pin in the xLogic showing.
1. Keep the input pin of F NULL(do not connect with other blocks) ,if you want to use the write property.
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