Siemens SINUMERIK 840C - Manual (Page 585)

7 Drive Machine Data (SIMODRIVE Drive MD) 10.94
7.4.3 Diagnosis/service MD (data description - as from SW 3)
Ramp-up phase 11000
Default value Lower output limit Upper output limit Units
– 0000 0505 –
Active
at once
The "Ramp-up phase" machine data contains the control word for the ramp-up control of the
611D components. This machine data is provided for every logical, digital drive number. The
high byte displays the ramp-up status as specified by the SERVO; the low byte displays the
status acknowledged by the drive.
High byte
Bits 8 - 15 Output of ramp-up status specified by SERVO
Low byte
Bits 0 - 7 Output of ramp-up status acknowledged by the drive
CRC error 11001
Default value Lower output limit Upper output limit Units
– 0000 FFFF Hex
Active
at once
The "CRC error" machine data (cyclical error block check) contains 4 error counters for bus
transmission errors between the NC and drive which have been detected by a hardware
monitor.
Errors are detected by ASICs (DCM, DCS, PCU 0 and PCU 1) which are involved in the
transmission.
The error counters are reset after an NCK power on reset and cease to be incremented once
they have reached their maximum value.
The machine data is formatted as follows:
High byte
Bits 12-15 Error counter DCM : No. of errors on reading from the
(Drive Communication Master) digital drive
High byte
Bits 8-11 Error counter DCS : No. of errors on writing from the
(Drive Communication Slave) digital drive
Low byte
Bits 4 - 7 Error counter PCU 1 : Number of errors on writing to
(Position Control Unit ˆ =Motor PCU 1
measuring system)
Low byte
Bits 0 - 3 Error counter PCU 0 : Number of errors on writing to
(Position Control Unit ˆ =Direct PCU 0
measuring system)
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SINUMERIK 840C (IA)