Spectrum Controls 1794sc-IF8IU - Manual (Page 40)

3-14 Flex™ IO Isolated Universal Input Module
User's Manual Pub. 0300231‐01 Rev. A
(10000 - -1000) = 20000
20000 X 0.20 = 4000
Cal offset may be between -4000 to + 4000.
It must be in the same range and format as the selected channel data and
will be added to the final result post scaling.
Note: If a CJC format is selected, the cal offset is ignored.
3.4.12 CJC Offset [Words 41 to 48]
The CJC offset is added to the CJC temperature value prior to using it to correct the
thermocouple value or final scaling for CJC formats.
The CJC offset must be within +/- 20% of the CJC full scale:
(-25°C (-2500) to 85°C (8500)) or a configuration error will be declared.
8,500 - -2,500C = 11,000
11,000 X 0.20 = 2,200.
CJC offset may be between -2,200 to +2,200.
It must be formatted in degrees C multiplied by 100.
E.G. For a 1°C offset, 1°C X 100 = 100.
Section 3.5
Read Input
& Status Data
Input and status data is read for each channel, converted to a scaled digital value, and
stored in the controller tags. The following figure describes the tag structure allocated by
the Generic Flex Module profile.
[Name of remote communication module]:e:x.Data[0 to 184]
e = IF8IU slot number
x = Image Type (i.e. C, I, or O)
Using the remote Ethernet adapter example, the input/status tags would appear under the
controller tags as shown in the figure below.