The services of the PROFIBUS data link layer
(Layer 2) are used by PROFIBUS-DP through
service access Points (SAPs). Precisely de-
fined functions are assigned to individual
SAPs. For further information on SAPs, refer
to the PROFIBUS master manual.
The following SAPs are supported by the M10x:
• SAP47 – acyclic read/write of MSAC_C2, abort
• SAP48 – acyclic read/write of MSAC_C2, abort
• SAP49 – initiate req of MSAC_C2
• SAP51 – acyclical read/write of MSAC_C1
• SAP56 – read input
• SAP57 – read output
• SAP58 – global control command
• SAP59 – read configuration data
• SAP60 – read diagnosis data
• SAP61 – initial parameters
• SAP62 – check the configuration data
For more information on PROFIBUS
implementation in M10x, please refer to
M10x-P PROFIBUS protocol
implementation.
63 Bus (line) network
PROFIBUS description
PROFIBUS-DP is a distributed I/O system that
enables the master to use a large number of
peripheral modules and field devices. The
data transfer is mainly cyclic: the master
reads the
input information from the slaves and sends
the output information back to the slaves.
PROFIBUS-DPV1 is an extension of the DP pro-
tocol.
Additionally, it allows the acyclic exchange of
data between master station and slave sta-
tion.
88 M OTO R CO NTRO L A N D PROTE C TI O N U N IT M10X USER G U I D E
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