Siemens SINUMERIK 840D sl Series Diagnostics Manual page 631

08/2005
201220 <location>CU: Bas clock cyc too low
Reaction: NONE
Acknowledge: IMMEDIATELY
Cause: The parameter for the basic clock cycle is set too short for the number of connected drives.
Fault value (r0949, decimal):
The fault value specifies the parameter involved.
See also: p0110
Remedy: - increase the basic clock cycle.
- reduce the number of connected drives and start to re-commission the unit.
See also: p0110
201221 <location>CU: Bas clock cyc too low
Reaction: NONE
Acknowledge: IMMEDIATELY
Cause: The closed-loop control / monitoring cannot maintain the intended clock cycle.
The runtime of the closed-loop control/monitoring is too longer for the particular clock cycle
or the computation time remaining in the system is not sufficient for the closed-loop
control/monitoring.
Fault value (r0949, hexadecimal):
Only for internal Siemens troubleshooting.
Remedy: Increase the basic clock cycle of DRIVE-CLiQ communications.
See also: p0112
201250 <location>CU: CU-EEPROM incorrect read-only data
Reaction: NONE (OFF2)
Acknowledge: POWER ON
Cause: Error when reading the read-only data of the EEPROM in the control unit.
Fault value (r0949, decimal):
Only for internal Siemens troubleshooting.
Remedy: - carry-out a POWER ON.
- replace the control unit
201251 <location>CU: CU-EEPROM incorrect read-write data
Reaction: NONE
Acknowledge: NONE
Cause: Error when reading the read-write data of the EEPROM in the control unit.
Alarm value (r2124, decimal):
Only for internal Siemens troubleshooting.
Remedy: For alarm value r2124 < 256, the following applies:
- carry-out a POWER ON.
- replace the control unit.
For alarm value r2124 >= 256, the following applies:
- delete (clear) the fault memory on the drive object on which the alarm occurred (p0952 =
0).
- as an alternative, delete (clear) the fault memories of all drive objects (p2147 = 1).
- replace the control unit.
201255 <location>CU: Opt. module EEPROM incorrect read-only data
Reaction: NONE (OFF2)
Acknowledge: POWER ON
Cause: Error when reading the read-only data of the EEPROM in the option module.
Fault value (r0949, decimal):
Only for internal Siemens troubleshooting.
Remedy: - carry-out a POWER ON.
- replace the control unit.
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
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