Modifying the Parameters by Program

Principle

You can command the modification of certain parameters by program, in order to automatically adapt the measurements to the processing applications.

Example: Modifying the tare value by program if several types of product are to be weighed with different packagings.

List of Adjustable Parameters

The following parameters may be modified by program:

Adjustable Parameters	Corresponding Data
F1 filter coefficient	%MWr.m.0.6
"Manual" tare value	%MWr.m.0.7
Cut-off points (thresholds)	%MDr.m.0.8 and %MDr.m.0.10
Logic of S0 and S1 outputs	%MWr.m.0.12
LF mask time	%MWr.m.0.13
Number of measurements used to calculate flow rate	%MWr.m.0.14
F2 filter coefficient	%MWr.m.0.15
F3 filter coefficient	%MWr.m.0.16

Possible Actions

You can:

modify an adjustment parameter by program
send adjustment parameters to the module
control the module's parameter recognition
read the adjustment parameter value in the module and thereby update the PLC memory
save the adjustment parameters
restore the value of saved parameters to the PLC memory

Instructions Used

The instructions used to do these operations are as follows:

Instruction	Function Carried Out
WRITE_PARAM (%CH r.m.0)	Send the parameter contents of the previous table to the weighing module.
READ_PARAM (%CH r.m.0)	Reads the adjustment parameters in the module and updates the above table.
SAVE_PARAM (%CH r.m.0)	Saves the adjustment parameter values in the memory zone of the processor. These parameter values will be the ones used when the PLC is started from cold.
RESTORE_PARAM (%CH r.m.0)	Allows the adjustment parameters to be reloaded with the values entered at module configuration or at the last SAVE_PARAM.

The module can process several adjustments simultaneously.