Rockwell Automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual - Manual (Page 45)

Publication 1794-UM064B-EN-P - May 2014
Communicate With Your Module 33
1794-IT8 Word/Bit Descriptions
Word Decimal Bit Definition
Read Word 0 00…15 (00…17) Reserved
Read Word 1 00…15 (00…17) Channel 0 Input data
Read Word 2 00…15 (00…17) Channel 1 Input data
Read Word 3 00…15 (00…17) Channel 2 Input data
Read Word 4 00…15 (00…17) Channel 3 Input data
Read Word 5 00…15 (00…17) Channel 4 Input data
Read Word 6 00…15 (00…17) Channel 5 Input data
Read Word 7 00…15 (00…17) Channel 6 Input data
Read Word 8 00…15 (00…17) Channel 7 Input data
Read Word 9 00…07 (00…07) Underrange bits – These bits are set if the input signal is
below the input channel’s minimum range.
08…15 (10…17) Overrrange 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.
Read Word 10 00 Not used – set to 0.
01 Cold Junction sensor underrange bit – This bit is set if
the cold junction temperature is below 0 °C.
02 Cold Junction sensor overrange bit – This bit is set if
the cold junction temperature is above 70 °C.
03 Power Up bit – This bit is set (1) until configuration data is
received by the module.
04…06 Critical Fault bits – If these bits are anything other than
zero, return the module to the factory for repair.
07 Unused – Set to 0.
08 (10) Calibration Out of Range bit – Set to 1 if a reference
signal is out of range during calibration.
09 (11) Calibration Done bit – Set to 1 after an initiated
calibration cycle is complete.
10 (12) Calibration Bad bit – Set to 1 if the channel has not had a
valid calibration.
11…15 (13…17) Unused – Set to 0.