ICP DAS PMC-523x/PMC-224x/PMD Series User Manual
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10.8
Internal Register Setting
PMC/PMD provides 70 Internal Registers;
the Internal Registers of No.51
to No.70 provide the "Retain Variable" mechanism.
It means that the data
inside these Internal Registers will be retained even the PMC/PMD is in
Power Off status.
The Internal Register can be used to hold temporary variables and the data
can be read/written on the Registers via Modbus command. The data on the
registers can also be read and evaluated in IF Condition and be written after
performing a THEN/ELSE Action.
In additional, PMC/PMD supports math formula editing function with the
firmware v3.3.0 (or later version) for the Internal Registers. Users can edit
different formula in each Internal Register by assing the power data or I/O
channels data as the variables, and using the operators as plus"+", minus"-",
times"*", divide"/", superscript"^", left parenthesis"(" and right
parenthesis")". PMC/PMD will calculate the results of all formulas
repeatedly, and save the results into the corresponding Internal Registers for
logic rule operation or data logging
The configuration page of Internal Register is shown as follow.
Figure10-37 :
Internal Register setting page(1)
The settings steps are as below:
i
Select the number of the Internal Register from the dropdown list, input
“Name” and “Initial Value” and then click
to add new Internal
