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06.91
3.4.4
Communication with SIMATIC S5 systems
Direct communication between S5 programmable controllers and the PLC 135 WB integrated
in the SINUMERIK 8X0 systems permits the use of different protocols on the application layer.
For this purpose, the SINEC Technological Functions (STF) have been defined by Siemens as
a common level-7 protocol. The SINEC Technological Functions are fully compatible with ISO
9506 (MMS), parts 1 and 2 with regard to the scope of functions and can thus easily be
integrated in MAP 3.0. On the SIMATIC S5 side, the CP 143 enables the STF functions to be
utilized within SIMATIC S5 systems.
3.4.4.1 STF extension
The implementation of the STF extension in the SINEC H1 module permits direct
communication between the PLC 135 WB integrated in the SINUMERIK 8X0 system and the
SIMATIC S5 programmable controller via STF.
STF (SINEC Technological Functions) offers the following functions
•
Communication with SIMATIC S5 using jobs and acknowledgements
•
Utilization of all STF services (variable services, domain services, ...)
•
Segmentation of jobs and acknowledgements > 246 bytes (up to max. 2 Kbytes)
The STF extension is capable of simultaneously processing five jobs in the output direction
and five jobs in the input direction if different logical links are used.
Only one job at a time can be transferred
The relevant configuring parameters must be entered in input list 1 and the assignment list
(logical partner/link list).
Entries in input list 1 for STF:
•
Sub-address position:
•
Sub-address length:
•
Sub-address contents:
No fixed AP header is used for the STF extension. The SINUMERIK driver implemented in the
interface module reads the COMCLS parameter in the AP 1.0 header to determine whether a
TF message frame is transmitted and to determine the type of service required.
In the PLC, the STF message frames (including AP header) are made available via the user
interface or useful data DBs to which user- configurable function blocks have access. These
user function blocks control data transfer and/or flow control and interpret the STF message
frames. No standard FBs are offered for this purpose. The function blocks required for the
SINEC Technological Functions (e.g. variable services, domain services, ... ) must be
generated by the user and implemented in the PLC.
© Siemens AG 1989 All Rights Reserved
SINUMERIK 840/880 (PJ)
via a logical link.
255 (TF identification)
4
Logical partner target (4 ASCII characters)
(logical partner target for input direction must also be entered in
the assignment list.)
6FC5 197-0AB20-0BP0
3 Interface Modules
3.4.4 Communication with SIMATIC S5 systems
3–41
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