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3 Interface Modules
3.4 Protocols
Start of procedure
Protocol header
SINEC H1
(bus link)
20 bytes 2 bytes
AS 512 header
3964R/LSV2
(serial link)
10 bytes 2 bytes
XON/XOFF,
RTS-LINE,
TRANSPARENT
(serial link)
Protocols for computer link
3.4.1
SINEC AP1 protocol
AP SINEC defines the sum of the rules by which communication between two AP applications
is executed.
This sum of rules (i.e. the protocol) covers:
•
Protocol sequences
How does the node respond when it receives a job, and which session types exist.
•
Coding and syntax
How is an item of information represented and what is the structure of the.message.
•
Meaning, semantics
What can be communicated with the aid of the sequences and code in a standardized
form.
SINEC AP standardizes these rules for SINEC in layers 5 to 7 of the protocol architecture. In
this way nodes on different systems can exchange standardized information. Due to
standardization of messages, it is possible to fully integrate layers 5 to 7 into the network
management. As a result, complete control of the local area network system is ensured up to
the AP application interface.
1)
configurable in interfaces
with/ewithout AS 512 protocol
with/without System 800 identification
2)
Max. 244 bytes; when connected to Siemens FMS systems, max. 224 bytes.
3–28
Message frame data
AP 1 header
Identification
Message frame
data length
8 bytes 2 bytes
1)
Identification
Message frame
data length
8 bytes 2 bytes
(max. 244 bytes)
© Siemens AG 1989 All Rights Reserved
End of procedure
SINEC H1
Error
Useful
(bus link)
number
data
2)
1)
3964R/LSV2
Error
Useful
(serial link)
number
data
2)
XON/XOFF,
Useful data
RTS-LINE,
TRANSPARENT
(serial link)
6FC5 197-0AB20-0BP0
SINUMERIK 840/880 (PJ)
06.91
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