Specifications

METERCC
The calibration constant of each metering channel is unique and may be modified manually or by a macro. The
calibration constant is a multiplier that is applied to the input A/D value before being usable by monitoring
software or mathematical functions in a macro. This way a +3VDC input can be made to equate to 2.1KW
(Kilowatts). The calibration constant in this instance would be approximately 0.00171 (2.1÷(4096*.3)). For a
displayed reading of 50,000 and an input of +8.5VDC, the calibration constant would be approximately
14.3596 (50000÷(4096*.85)). The .3 and .85 in the above equations represent a percentage of a maximum
value: 3 volts of 10 volts possible and 8.5 volts out of 10 volts possible.
The METERCC value is a floating point value and is entered in an equation form with METERCC followed by the
channel number inside of parentheses on one side of the equation and its floating point value on the other.
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L1METER, U1METER, L2METER, U2METER
The definition of a meter channel’s lower or upper limit is defined in the configuration section. The use of these
statements allows a macro to receive a limit’s value or change that setting to a predefined value. This is useful
when changing existing limits in a pre-planned manner, without the need to mute one input channel and unmute
another. See the Power Change macro example on the following page.
The statement is followed by the channel number within parentheses and is then set equal to another floating
point value. All values are after the calibration constant is applied.
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METERF(n)
The NewValue is a floating point number and must be within the calibrated A-D range of the given channel.
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L1METER(1)=65 [CR]
Sets the 1st Lower Limit on metering
channel 1 of this unit to 65.
U2METER(1)=115 [CR]
Sets the 2nd Upper Limit on metering
channel 1 of this unit to 115.
METERF(16)=8.321 [CR]
Metering channel 16 will now the display
the value of 8.321.
METERCC(14)=2.583 [CR]
Assigns the value of 2.583 to metering
channel 14’s calibration constant.
METERCC(12)=METERCC(3)/14 [CR]
Assigns the value of metering channel 13’s
calibration constant divided by 14, to
metering channel 12’s calibration constant.