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11.91
14
Alarm No.
Alarm Text:
"RAM error memory module"
Remarks:
Alarm only on commissioning
16
Alarm No.
Alarm Text:
"Parity error RS232C (V.24)"
Reason:
The last character transferred has incorrect parity.
Effect:
RS232 transfer is interrupted; the last block is not stored
Remedy:
– Check setting data 5011/5013/5019/5021
– Test external device
Explanation:
The alarm only appears when the setting data "with parity bit" is set.
17
Alarm No.
Alarm Text:
"Overflow error RS232C (V.24)"
Reason:
Transfer speed is not correct
Effect:
– Data transfer is interrupted
– The last block is not stored
Remedy:
– Check setting data 5011/5013/5019/5021
– Check transfer speed (Baud rate)
18
Alarm No.
Alarm Text:
"Frame error RS232C (V.24)"
Reason:
– Number of stop bits is incorrect
– Baud rate is incorrect
– Number of data bits is incorrect
Effect:
– Data transfer is interrupted
Remedy:
– The last block is not stored
– Check setting data 5011/5013/5019/5021
– Test external device
19
Alarm No.
Alarm Text:
"I/O device not ready RS232C (V.24)"
Reason:
DSR signal has low level.
Effect:
No data are read in.
Remedy
– Start external device
– Do not use DSR (isolate cable)
20
Alarm No.
Alarm Text:
"PLC alarm memory not formatted"
Remarks:
Alarm only on commissioning
© Siemens AG 1990 All Rights Reserved
SINUMERIK 810T, GA3 (BN)
6ZB5 410-0EP02
4 Monitoring Functions
4.6 Listing of the alarms/alarm description
4-7
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