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06.91
6.4
Configurable message frames
Configurable message frames are those message frames the data and information of which
must be processed in the PLC user program in the case of incoming message frames or
which have to be provided by the PLC user program in the case of message frames to be
sent.
Incoming message frames are communicated to the user via the "input" user interface. The
transmitted data is stored in a specific data area.
Initiation for transmitting a message frame is via the "output" user interface. The data to be
transmitted has to be provided in specified data areas.
6.5
Message frame overview
The following tables contain an overview of message frames, covering all identifications
currently agreed which are required with FMS systems between the SINUMERIK 8X0 (CNC)
and the production control computer.
Furthermore, message frames are listed which are exchanged between the SINUMERIK (CNC)
and subordinate units such as write/read devices.
In addition to the message frame identification the following is specified in the tables:
•
the direction of the message frame with the aid of an arrow which always points from the
transmitter to the receiver of the respective message frame.
•
the type of message frame with the aid of the symbols
S, K and P:
S = Standard message frame
K = Message frame of a kernel sequence
P = Configurable message frame
© Siemens AG 1989 All Rights Reserved
SINUMERIK 840/880 (PJ)
6FC5 197-0AB20-0BP0
6 Message Frames
6.4 Configurable message frames
6–7
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