Rockwell Automation 1797-IRT8 FLEX Ex Thermocouple/RTD/mV Input Module User Manual User Manual
Page 47
Publication 1797-6.5.2 - February 2001
Input, Status, Output and Configuration Files for the Thermocouple/RTD/mV Module on the ControlNet Network 4-9
Input Word 8
00-07
Underrange bits – these bits are set if the input signal is below the input channel’s minimum range.
Bit 00 corresponds to channel 0, bit 01 corresponds to channel 1, etc.
08-15 (10-17)
Overrange bits – these bits are set if 1), the input signal is above the input channel’s maximum
range, or 2), an open detector is detected. Bit 08 (10) corresponds to channel 0, bit 09 (11)
corresponds to channel 1, etc.
Input Word 9
00-03
Diagnostic bits – represent module configuration and/or hardware errors.
Bit
03
02
01
00
0
0
0
0
Reserved for factory use
0
0
1
0
Improper module configuration
0001 and 0011 thru 1111 Reserved for factory use
04
Not used.
05-06
Cold junction compensation alarm bits – These bits are set (1) when the corresponding cold
junction compensator lead is broken, unattached or shorted. Bit 05 corresponds to CJC1, and bit 06
to CJC2.
07
Not used
08-15 (10-17)
Fault alarm bits – An alarm bit is set (1) when an individual input lead opens (broken,
disconnected). If the alarm is enabled, the channel reads maximum value. Bit 08 (10) corresponds to
input channel 0, bit 09 (11) to channel 1, etc.
Input Word 10
00-07
Module command response data bits – These bits echo the module command data written to the
module during calibration.
08-14 (10-16)
Module command response bits – These bits echo the module command written to the module
during calibration.
15 (17)
Reserved for factory use
Input Word
Dec. Bits
(Octal Bits)
Description