Siemens SINUMERIK 828D Function Manual page 280

D1: Diagnostics tools
5.3 Service overview
CRC error
Display of communications errors detected in hardware between NC and drive.
Note
If the display shows a value other than "0", please contact your SIEMENS Regional Office!
ZK1 Messages
Display indicates whether messages of status class 1 are active.
State 0: There is no pending ZK1 message.
State 1: One or several status class 1 messages are active.
Status class 1 messages are alarms with the following characteristics:
• They lead to internal responses (e.g. regenerative braking, immediate pulse suppression)
• They are modal.
DC link voltage
indicates the current DC link voltage level within the drive grouping.
Unit: Volts
Speed setpoint
The displayed speed setpoint represents the unfiltered total setpoint value. It consists of the position controller
output component and the speed feedforward branch.
Unit: rpm
Display corresponds to machine data:
MD1706 $MD_DESIRED_SPEED (speed setpoint value).
Speed actual value
The displayed real value represents the unfiltered actual speed value.
Unit: rpm
Display corresponds to machine data:
MD1707 $MD_ACTUAL_SPEED (actual speed value).
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions