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12
Analog Output Options
12.2 UNLOCKING
1. Press the 'MENU' button until "L3 CNF" is displayed, then press the
'MIN' button until "L3C.7" is displayed.
2. Press the 'MAX' button (if required) to set "L3C.7=0", unlocking the
choice of current or voltage as the calibrated output.
3. Press the 'MIN' button (and the 'MAX' button if required) to set
"L3C.8=0", unlocking OT.SC.OF.
4. Press the 'MENU' button to store these choices.
5. If your analog board is NEWLY INSTALLED, you will need to enter the
four trimming constants (refer to the one-time only procedure in Section
12.5). To unlock this feature, press the 'MIN' button and then the 'MAX'
button to set "L4C.6=0" and store by pressing the 'MENU' button.
12.3 "OUT.CNF": CONFIGURING THE OUTPUT
1. Press the 'MENU' button until "OUT.CNF" is displayed, then press the
'MIN' button to display "OUT.1=0" or "OUT.1=1".
2. Press the 'MAX' button to set "OUT.1=1" if you wish the analog output to
be driven at once when you return to run mode. (You can leave this as
"OUT.1=0" and complete all the other programming if you wish to
activate the analog output at a later time by returning to this
configuration bit).
3. Press the 'MIN' button (and the 'MAX' button if required) and set
"OUT.2=0" for calibrated VOLT output (0-1 V, 0-5 V, 1-5 V, or 0-10 V) or
"OUT.2=1" for calibrated CURRENT (0-20 mA or 4-20 mA) output.
4. Press the 'MENU' button to store these choices (the rest of the
"OUT.CNF" byte controls BCD and display-flashing features).
After pressing the 'MENU' button again, you advance to "OT.SC.OF"
(Output Scale and Offset).
12.4 "OT.SC.OF": SETTING OUTPUT SCALE AND OFFSET
Any two data points can be used here: a data point is specified by a value of
the display ("READ") and the desired output ("OUTPT") for that display.
1. Press the 'MIN' button to see "READ1" and then use the 'MIN' and
'MAX' buttons to enter a small display value, for example, "000.000",
where the center decimal point position is used as an example.
2. Store this value by pressing the 'MENU' button and then you see
"OUTPT1". Use the 'MIN' and 'MAX' buttons to specify the desired
output value, for example, "04.0000" if current calibration had been
selected ("OUT.2=1"), or "00.0000" for voltage.
3. Store this value by pressing the 'MENU' button and then advance to
"READ2". Use the 'MIN' and 'MAX' buttons to enter a large display
value, for example, "123.456", for the display that you want the analog
output at full scale.
12-2
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