
09.91 11 Alarms
11.7 RS232C (V.24) Alarms
11.7 RS232C (V.24) Alarms
Effect:
Explanation:
Remedy:
16
Parity error RS232C (V.24)
• RS232C (V.24) transmission interrupted
• Last block declared invalid
The alarm can only be activated when the setting data ”with parity bit”
is set. The parity of the started character (8 data and 1 parity) is
incorrect.
The alarm has no connection with the RS232C (V.24) character parity
error
for ISO or EIA tape (Alarm 23)
• Check SD bits 5011, 5013, 5019, 5021
• Test external device
Effect:
Explanation:
Remedy:
17
Overflow error RS232C (V.24)
• RS232C (V.24) transmission interrupted
• Last block declared invalid
The external device has transmitted a new character although
the NC has not yet processed the old character.
• Check SD bits 5011, 5013, 5019, 5021
• Test external device
• Line-controlled or character-controlled transmission
• Reduce baudrate
Effect:
Explanation:
Remedy:
18
Frame error RS232C (V.24)
• RS232C (V.24) transmission interrupted
• Last block declared invalid
• The number of stop bits is incorrect
• Wrong baud rate
• Number of data bits is wrong
• Check SD bits 5011, 5013, 5019, 5021
• Test external device
• Number of data bits: 7 data + 1 parity
© Siemens AG 1990 All Rights Reserved 6ZB5 410-0DL02 11–11
SINUMERIK 810 GA3/820 GA3 (IA)
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