03.2010 Communication / CBC
Siemens AG 6SE7087-6QX70 (Version AL)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.4-55
Alarms A083 and A084 are also stored as information in alarm
parameter 6 (r958). The individual alarms are assigned to the
corresponding bits in r958 (Bit x = 1: alarm present):
r958 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
Alarm A083
Alarm A084
When the CBC is combined with the control/technology board (CU/TB),
the following fault messages can occur:
Fault Meaning
F 080
TB/CB Init.:
Incorrect initialization and parameterization of the CBC via the
dual-port RAM interface (DPR interface)
• CBC selected with parameter P090/P091, but not inserted
(not in the case of CUPM, CUMC or CUVC)
→ Correct parameter P090 P091, insert CBC
• Parameterization for CBC false, cause of incorrect
parameterization in diagnostic parameter r731.01
→ Correct CB parameter P711-P721 / P696 - P706.
Correct CB bus address P918
• CBC defective
→ Replace CBC
F 081
DPR heartbeat:
The CBC is no longer processing the heartbeat counter.
• CBC not correctly inserted into the electronics box
→ Check CBC
• CBC defective
→ Replace CBC
F 082
DPR telegram failure:
The telegram-failure time set by means of parameter P722 /
P695 has expired
• CAN-bus master has failed (green LED on the CBC is
continuously off)
• Cable connection between the bus nodes has been
interrupted (green LED on the CBC is continuously off)
→ Check the bus cable
• EMC loading of the bus cable too high.
→ Refer to EMC notes
• Telegram monitoring time has been set too low (the green
LED on the CBC flashes)
→ Increase the parameter value in P722 / P695
• CBC defective
→ Replace CBC
• Possible cause
→ Remedy
Table 8.4-15 Fault displays on the basic unit
Fault/error display
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