Warnings, Alarms, Warnings alarms – Rockwell Automation 842E EtherNet/IP Absolute Encoder User Manual User Manual
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Rockwell Automation Publication 842E-UM001A-EN-P May 2012
Chapter 7
Diagnostics and troubleshooting
Warnings
Supported warnings (attribute 47+48)
Alarms
The alarm type is coded in a bit field of attributes 44 and 45. If one of the bits is
listed below is set, the alarm flag (attribute 47) will also be set.
If, for example, the velocity or temperature drop below/exceed the limit values,
the warning flag is set (attribute 49 position sensor object).
In addition, the Net LED flashes red.
The warning type is coded in a bit field of attributes 47 and 48.
Note: The position value will continue to be correctly calculated; the encoder is
therefore still ready for operation.
Bit
Warning
Description
FALSE (0)
(47)
TRUE (1)
(47)
0
Frequency exceeded
Max. velocity exceeded
OK
Exceeded
1
Light control reserve
LED current critical
OK
Out of
range
2
CPU watchdog
Not implemented
Always 0
–
3
Operating time limit warning
Operating time limit reached
Always 0
–
4
Battery charge
Not implemented
Always 0
–
5
Reference point
Not implemented
Always 0
–
6
Minimum velocity flag
Minimum velocity set-point reached
OK
Fall below
7
Maximum velocity flag
Maximum velocity set-point reached
OK
Exceeded
8
Minimum acceleration flag
Minimum acceleration set-point reached
OK
Fall below
9
Maximum acceleration flag
Maximum acceleration set-point reached
OK
Exceeded
10
Position limits exceeded
Max. position exceeded
OK
Exceeded
11
Reserved by CIP
–
Always 0
–
12
Reserved by CIP
–
Always 0
–
13
Vendor:
Temperature out of range
Temperature set-points reached
OK
Out of
range
14
Vendor: over / under voltage
(9.700…30.300mV)
voltage set-points reached
OK
Out of
range