Omron CQM1H - 08-2005, Operation Manual

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The nonvolatile memory can store the zero shift value.
While the forced-zero state stays in effect, the ZERO indicator is lit.
Note The forced zero function is not effective when the timing hold mode is set to
peak-to-peak hold.
2-6 Voltage Monitor Output
The CQM1-LSE02 has a voltage monitor output function.
Scaled conversion data monitor mode or set data D/A output mode can be se-
lected.
The Unit refreshes its monitor output at 0.5-s intervals.
In this mode, it is possible to output voltage corresponding to the scaled conver-
sion data.
Example of Scaling into the Data between 0000 to 5000 for the Input be-
tween 4 to 20 mA
When the input is 12 mA, the scaled conversion data becomes 2500 and the out-
put voltage that corresponds to this value becomes 2.5 V.
Scaled conversion data
Input value (mA)
0 4 12 20
2500
5000
–9999
–9.999
2500 9999
9.999
2.5
Output voltage (V)
Scaled con-
version data
(decimal)
In this mode, the monitor output terminal of the CQM1-LSE02 will have voltage
output corresponding to the signed binary data stored in the output word of the
CQM1-LSE02 by easy use of the ladder program.
The signed binary data range of the CQM1-LSE02 is from –9999 (D8F1) to 9999
(270F) and the voltage output range of the CQM1-LSE02 corresponding to the
signed binary data range is from –9.999 to 9.999 V.
If the signed binary data out of the range is stored in the output word, either
–9.999 or 9.999 V will be output. For example, if the signed binary data D8F0
(–10000 in BCD) is written, the voltage of the monitor output will be –9.999 V.
Note In case of using the Unit in the set data D/A output mode, when obtaining the
value to be set to the output word through calculation using the ladder program,
etc., be careful not to use the computed result of “C000 to CFFF.” Even when the
Unit is used in the set data D/A output mode, if “C000 to CFFF” is set to the output
word, it is treated as a command.
In this mode, analog input is converted into digital data and then converted into
analog output. Therefore, the obtained analog output is not highly precise.
Scaled Conversion Data
Monitor Mode
Set Data D/A Output Mode
Voltage Monitor Output
Section 2-6