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
Bits 8 - 15
Low byte
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
Bits 12-15
High byte
Bits 8-11
Low byte
Bits 4 - 7
Low byte
Bits 0 - 3
7–170
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Ramp-up phase
Lower output limit
0000
Output of ramp-up status specified by SERVO
Output of ramp-up status acknowledged by the drive
Lower output limit
0000
Error counter DCM
(Drive Communication Master)
Error counter DCS
(Drive Communication Slave)
Error counter PCU 1
(Position Control Unit ˆ =Motor
measuring system)
Error counter PCU 0
(Position Control Unit ˆ =Direct
measuring system)
ManualsBase.com
Upper output limit
0505
CRC error
Upper output limit
FFFF
: 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
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Siemens AG 1992 All Rights Reserved
10.94
Active
at once
Units
–
Active
at once
Units
Hex
6FC5197- AA50
SINUMERIK 840C (IA)