Omron ZW Series User Manual page 144

Chapter 4
Settings for I/O
■ Correcting analog output values
Discrepancies may occur between the current value/voltage value output as analog set
on the Controller and the current value/voltage value actually measured due to the
conditions for the connected external device or other factors.
The analog output correction function can be used to correct this discrepancy.
The output values are corrected by entering the correction value for the current or
voltage values for any two points. (Setting range: -999 to +999, default value: 0)
Set the output type and select either current or voltage output beforehand. Also, connect the analog
output signal line to an external ammeter or voltmeter.
As example, here is an explanation of the procedure for correcting 4 mA output (Point
1) and 20 mA output (Point 2).
Operating procedure
Steps
1 - 3 For moving to ANALOG, see steps 1 to 3 in p.4-12
4
5
6
7
8
ZW
4-16
User's Manual
Key operation Display
ZERORST/ ESC ESC
ZERORST/
ZERO/ SET ZERO/ SET
ZERORST/ ZERORST/ ESC ESC
ZERO/ SET ZERO/ SET
ZERORST/ ESC ZERORST/ ESC
ZERO/ ZERO/ SET SET
ZERORST/ ZERORST/ ESC ESC
ZERO/ SET SET
ZERO/
Description
Press or keys to select either of "CALIB" and
press key.
ZERO/ ZERO/ SET SET
The current setting value is displayed on the sub-
display.
Press / keys to enter the editing mode, and the
sub-display blinks.
Select "ON" and press
ZERO/ SET ZERO/ SET
The current set value for Point 1 is displayed on the
sub-display.
Press / keys to enter the editing mode, and the
sub-display blinks.
Select "4mA" and press
ZERO/ ZERO/ SET SET
Correct the Point 1 output.
Press / / / keys to input the correction
value and press key.
ZERO/ ZERO/ SET SET
Next, check the ammeter value and press
ZERORST/ ESC ZERORST/ ESC
To re-adjust, press key.
The current set value for Point 2 is displayed on the
sub-display.
Press / keys to enter the editing mode, and the
sub-display blinks.
Select "20mA" and press
ZERO/ SET
ZERO/
key.
key.
key.
ZERO/ SET ZERO/ SET
key.
SET