Omron DeviceNet CV Series Operation Manual page 181

Temperature Input Terminals
Temperature Input
Terminal's Display Mode
for 2 Digits Below the
Decimal Point
!Caution In the display mode for 2 digits below the decimal point, temperature data is
164
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DRT1-TS04P
Number Input classification
0 Pt100
1 JPt100
2 to 9 Cannot be set.
If the input temperature goes outside of the permissible conversion range, the
temperature data is fixed at the upper or lower limit.
If the input temperature goes beyond a given constant value, outside of the
permissible conversion range, it is determined that the input wiring has been
disconnected. The open-circuit detection function is then activated so that the
temperature data is set to 7FFF (hexadecimal), and the broken wire indicator
on the Temperature Input Terminal lights up. The open-circuit detection func-
tion will operate even if there is an error at the Cold Junction Compensator.
When the input temperature returns to within the conversion range, the open-
circuit detection function is automatically cleared and the conversion data is
returned to normal.
This section explains the Temperature Input Terminal's display mode for 2 dig-
its below the decimal point.
When the Temperature Input Terminal is in this mode, each single item of tem-
perature data (four integer digits and two digits below the decimal point, in six
digits of hexadecimal binary data) is provided to the Master Unit multiplied by
100 with the sign affixed. At that time the temperature data is divided into two
parts as shown below, and these parts are alternately transmitted every 125
ms. (The two respective data items are each configured as one word of data.)
converted for up to two digits below the decimal point, but the actual resolu-
tion is not 0.01 ° C ( ° F). Therefore there may be some oscillation or jumping at
the 0.01 ° C ( ° F) and 0.1 ° C ( ° F) digits. Resolutions beyond those prescribed for
the normal mode should be treated as reference data.
Section 4-9
Range (°C) Range (°F)
–220.0 to 670.0 –320.0 to 1220.0
–220.0 to 670.0 –320.0 to 1220.0