Configuring / programming
9.4 Insert and configure parameter groups
SIMATIC PN/J1939 LINK
50 Operating Instructions, 12/2018, A5E45307564-AA
If data is to be read acyclically by the S7 controller, select a PGN input proxy.
You can specify a value from 8 bytes to a maximum of 1785 bytes as the
PGN data length
①.
The PGN input proxy itself has no data at its input address. The corresponding data is read
in the user program via RDREC with the data record index 0x220. You can find detailed
information in the section Cyclic and acyclic data exchange (Page 22).
Figure 9-6 PGN input proxy with a data length of 1785 bytes
If data is to be written acyclically by the S7 controller, select a PGN output proxy.
You can specify a value from 8 bytes to a maximum of 1785 bytes for the
PGN data length
①.
The PGN output proxy itself has no data at its output address. The corresponding data is
written via WRREC with the data record index 0x230. You can find detailed information in
the section Cyclic and acyclic data exchange (Page 22).
Figure 9-7 PGN output proxy with a data length of 1785 bytes
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