Modbus communication with HMI eliminating the PC

[ajith]

Respected sir,
I think there is an option for modbus communication. if it so is it possible to communicate with HMI and access the kflop inputs and output.
what are devices can be connected with kflop via rs232 and rs48?

[TomKerekes]

I think there is an option for modbus communication. if it so is it possible to communicate with HMI and access the kflop inputs and output.

Yes

what are devices can be connected with kflop via rs232 and rs48?

Any device that does serial communication. KFLOP itself only has a 3.3V UART. See here.

[ajith]

Respected sir,
Is it possible to add external start and emergency stop to initiate and stop my G code program?
if it so can you guide me how it is done?




Regards,
Ajith Arawinth,

[TomKerekes]

See the ExternalButtons.c example

[ajith]

Respected sir,

See the ExternalButtons.c example

I had gone through the program.
In that program they had defined the following variable.

#define FEEDHOLDBIT 46
#define CYCLESTARTBIT 47
#define ESTOP 26
#define HALTBIT 27
#define RESTARTBIT 28
#define ZEROALLBIT 29

After i connect my external pushbutton with the corresponding input as defined in the above whether i need to execute the " ExternalButtons.c " or is it enough to declare the program in any one of the thread in kflop.

[TomKerekes]

Yes it must be compiled, downloaded and executed to do anything.

After it is working it can be merged into your Init C Program's forever loop.

[ajith]

Respected sir,

After it is working it can be merged into your Init C Program's forever loop.

Is it possible to call the "ExternalButton.c" program directly into my Init C Program's forever loop.

[TomKerekes]

No there can be only one program. But you can call functions in included files.

[ajith]

Respected sir,
can you explain the procedure to establish an rs232 communication between a HMI and Kflop?

[TomKerekes]

See here.