Siemens SINUMERIK 840C Installation Instructions Manual page 585

7 Drive Machine Data (SIMODRIVE Drive MD)
7.4.3 Diagnosis/service MD (data description - as from SW 3)
11000
Default value
–
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 Output of ramp-up status specified by SERVO
Bits 8 - 15
Low byte Output of ramp-up status acknowledged by the drive
Bits 0 - 7
11001
Default value
–
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 Error counter DCM
Bits 12-15 (Drive Communication Master)
High byte Error counter DCS
Bits 8-11 (Drive Communication Slave)
Low byte Error counter PCU 1
Bits 4 - 7 (Position Control Unit ˆ =Motor
measuring system)
Low byte Error counter PCU 0
Bits 0 - 3 (Position Control Unit ˆ =Direct
measuring system)
7–170
Ramp-up phase
Lower output limit Upper output limit
0000
CRC error
Lower output limit Upper output limit
0000
: No. of errors on reading from the
digital drive
: No. of errors on writing from the
digital drive
: Number of errors on writing to
PCU 1
: Number of errors on writing to
PCU 0
©
Siemens AG 1992 All Rights Reserved
Units
0505 –
Units
FFFF Hex
6FC5197- AA50
SINUMERIK 840C (IA)
10.94
Active
at once
Active
at once