Rockwell Automation 1771-IL/B , D17716.5.91 ISOLATED ANALOG INPUT Module - Manual (Page 50)

Troubleshooting
Chapter 7
7-5
Status Reported in Word 15
Design your program to monitor status bits in word 15 during auto-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 as shown in Table 7.E.
Table 7.E
Status Reported in Word 15
Word
Decimal Bit
(Octal Bit)
Description
Bit 00
Offset Calibration Complete (O). When this bit is set, the offset calibration request
was successfully completed.
Bit 01
Gain Calibration Complete (G). When this bit is set, the gain calibration request
was successfully completed.
Bit 02
Save Complete (S). When this bit is set, the “save calibration values to EEPROM”
was successfully completed.
15
Bits 03-05 Not used
Word 15
Bit 06
EEPROM Fault (EF). When this bit is set, the calibration values could not be saved
to EEPROM.
Bit 07
Calibration Fault (CF). When this bit is set, the module could not perform offset or
gain calibration. This bit is set when a save is requested.
Bits 08-15
(10-17)
Calibration Inhibited. Each bit represents a channel that was not calibrated (bit 08
(10) - channel 1, bit 09 (11) - channel 2 and so on). This bit is set either due to an
error or a user request. If the channel was requested not to be calibrated, these bits
confirm that request.
In this chapter, you learned how to interpret the status indicators, status words
and troubleshoot your input module. Chapter Summary