Table of Contents
Advertisement
06.91
The segmenting information enables the receiver of a message to recompile the job correctly.
This information is especially important if one buffer "overtakes" another within the
transportation mechanism. Theoretically, the distribution mechanism of the system cannot
prevent buffers belonging to the same job from overtaking one another. It is possible, for
example, that a buffer with identification byte 8 = 3 arrives earlier than the buffer with
identification byte 8 = 2. The segment number, however, ensures that the data can be
allocated unambiguously to the relevant message frame.
3.4.4.2 Requirements for the application of STF
•
Hardware requirements
CP 231, any version
•
Software requirements
CP 231 firmware release from 2A (Order No. 6FX1 840-0BX01-2A)
NML, any version
3.4.5
Remote communication with programmers via SINEC H1
(under development)
3.4.5.1 Scope of functions
The local programmer interface in the COM area is used for commissioning and configuring
the SINUMERIK 8X0. The PLC integrated in the SINUMERIK 8X0 system and the programmer
connected communicate via this serial link by means of the AS512 protocol. The utilization of
programmer functions via SINEC H1 is being planned for a project in the field of material
handling and storage system automation.
On the programmer side, an interface has been defined for remote commissioning of SIMATIC
S5 systems via SINEC H1.
On the basis of this interface definition, the SINEC H1 interface module and the internal
software of the SINUMERIK 8X0 shall be expanded to provide remote programmer functions
for SINUMERIK 8X0 via SINEC H1.
The PG REMOTE function is optionally available and must be installed when required.
The BUS SELECTION utility program can be used to establish a bus link between a
programmer and the relevant SINUMERIK system. A password (maximum of 8 ASCII
characters) can be entered.
A password can also be included in the machine data MD 234/235 of the SINUMERIK system
which is then checked by the CP 231 A interface module for congruence with the password
entered via the programmer in the BUS SELECTION utility program. This feature ensures
selective protection against unauthorized access via the PG REMOTE function.
The only prerequisite for the PG REMOTE mode is the assignment of an Ethernet address in
the SINUMERIK system (specified either by means of the machine data MD 5141 to 5146 or
by configuring the computer link with NML).
The local programmer port has priority over the PG REMOTE mode and can also be
interrupted if necessary. The scope of functions of the CP 231 A "computer link" and
PG Remote mode are to a large extent independent of one another.
© Siemens AG 1989 All Rights Reserved
SINUMERIK 840/880 (PJ)
3.4.4 Communication with SIMATIC S5 systems
6FC5 197-0AB20-0BP0
3 Interface Modules
3–43
Advertisement
Table of Contents
