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3 Interface Modules
3.4.1 SINEC AP 1 protocol
Protocol identifier
Command class
AP function class
MODFR 1/ERRCLSS
Modifier/error class
Remote operating
service control
Transaction identifier
Function-oriented protocol elements
Management information
Control elements
Length specifications
Identification of the AP application designation (together with TSAP)
SINEC AP1 header (system part)
3–30
PROTID
MPXADR
COMCLS
COMCOD
MODFR 2/ERRCOD
ROSCTR
SGSQNR
TACTID
TASQNR
SPARE
PDUREF
PDUID
PDULG
PARLG
DATLG
Parameters
Useful data
© Siemens AG 1989 All Rights Reserved
08.89
Multiplex address
Command code
AP function code
Modifier/error code
Segment sequence
number
Transaction sequence
number
Free space
Protocol data unit
reference
Protocol data unit
identifer
Protocol data unit length
Parameter length
Data length
6FC5 197-0AB20-0BP0
SINUMERIK 840/880 (PJ)
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