Rockwell Automation 1771-IR Series D RTD Input Module User Manual - Manual (Page 49)

7–3 Troubleshooting
Publication 1771Ć6.5.129 - March2000
Word Indication Bit
2 00-05 Indicates that the default bias of 1000.0 has been subtracted from the
measured value. If sending binary data, no overflow occurs unless
there is a hardware malfunction.
06-07 Not used
10-15 Data sign bits formatted for BCD or signed magnitude. Bit 10
corresponds to channel 1, bit 11 to channel 2, and so on.
16-17 Not used
Status Reported in Word 9
Design your program to monitor status bits in word 9 during
calibration, and to take appropriate action depending on your
requirements. You may also want to monitor these bits while
troubleshooting with your industrial terminal. The module sets a bit
(1) to indicate it has detected one or more of the following
conditions.
Status Reported in Word 13
Word Bit Condition
9 6 The EEPROM could not be written.
7 Channel(s) could not be calibrated as indicated by bits 10 through 15 respectively.
10-15 Bit 10 (channel 1) through bit 16 (channel 6) could not be calibrated. Check field
wiring arm connections and source for proper resistance.
In this chapter, you learned how to interpret the LED status
indicators and troubleshoot your input module.
Chapter Summary