Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual - Manual (Page 80)

7–4 Troubleshooting
Publication 1771ĆUM127B-EN-P - December 2002
Table 7.C
Output Channel Status Word (1 per output channel)
Decimal Bit
(Octal Bit)
Definition
Bit 04 Low clamp. This bit is set if alarms are enabled and the output data is
lower than the low clamp value.
Bit 05 High clamp. This bit is set if alarms are enabled and the output data is
higher than the high clamp value.
Bit 06 Rate alarm. This bit is set if alarms are enabled and the output data
changed faster than the programmed ramp rate.
Bit 07 Bad data. This bit is set if BCD data format was chosen and the output
data was not a legal BCD value.
Bit 08 (10) Bad program. This bit is set if any of the channel level programming
data is illegal.
Bit 09 (11) Bad calibration. This bit is set if the channel has not had a valid
calibration.
Table 7.D
Input Channel Status Word (1 per input channel)
Decimal Bit
(Octal Bit)
Definition
Bit 00 Underrange bit. This bit is set if the input signal is below the input
channels minimum range.
Bit 01 Overrange bit. This bit is set if the input signal is above the input
channels maximum range.
Bit 04 Low alarm. This bit is set if alarms are enabled and the input signal is
lower than the low alarm setpoint.
Bit 05 High alarm. This bit is set if alarms are enabled and the input signal is
higher than the high alarm setpoint.
Bit 06 Rate alarm. This bit is set if alarms are enabled and the input signal
changed at a rate faster than the input rate alarm setpoint.
Bit 08 (10) Bad program. This bit is set if any of the module level programming
data is illegal.
Bit 09 (11) Bad calibration. This bit is set if the channel has not had a valid
calibration.
In this chapter, you learned how to interpret the status indicators,
status words and troubleshoot your analog module.
Chapter Summary