Siemens Sinumerik 840C Diagnostics Manual page 34

1 Alarms
1.5.1 Alarm description
172* Working area limitation plus
Scan
When executing a part program
S
Effect
Interlocking of NC START
S
Machining stops
Explanation
The working area limitation specified in the setting data has been reached.
S
Remedy
Check the working area limitation in the setting data
S
Check the program
S
Program G26 with different values
176* Working area limitation minus
Scan
When executing a part program
S
Effect
Machining stops
S
Interlocking of NC START
Explanation
The working area limitation minus preset in the setting data of the NC has been reached.
S
Remedy
Check the working area limitation in the setting data
S
Check the machining program
S
Program G25 with different values
180* Axis active in several channels
Scan
When executing a part program
S
Effect
Interlocking of NC START
S
Machining stops
Explanation
When executing two or more programs in different channels at the same time, one axis has been programmed in
both programs (channels).
S
Remedy
Check both programs
S
Insert L999 or @714
S
Stop a channel by pressing NC STOP
Note
Channel-specific
188* HW limit switch plus
Scan
Cyclic
S
Effect
Interlocking of NC START
S
Direction key in the direction of approach disabled
S
Machining stops
Explanation
The limit switch is approached in the plus direction or triggered by other errors.
S
Remedy
Travel away in the opposite direction
S
Check PLC user program
S
Check limit switches
192* HW limit switch minus
Scan
Cyclic
S
Effect
Machining stops
S
Interlocking of NC START
S
Direction key disabled in approach direction
Explanation
The machine limit switch in the minus direction has been approached or has been activated by other errors.
S
Remedy
Travel away in the opposite direction in JOG mode
S
Check limit switches
S
Check PLC user program
1–26

Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
07/97
Reset key
Reset key
Reset key
Reset key
Reset key