Checking And Compiling The Configuration; Programming; Plc Tags - Siemens SIMATIC PN/BACnet LINK Operating Instructions Manual

9.6

Checking and compiling the configuration

Checking / adapting I/O addresses
If necessary, you must adapt the I/O addresses assigned automatically by the TIA Portal.
This is possible, for example, in the "Device overview" window. Here you can also find the
I/O addresses used by the slots. The addresses assigned to slot 1, that is the BACnet
module, are especially important because the control and status information is exchanged
with the S7 program via these addresses. It is important for startup of the PN/BACnet LINK
that the control information transmitted here from the S7 program is set correctly.
Checking data consistency
With a subsequent compilation, you can check the consistency of the assignments as well as
the data types used.
PN/BACnet LINK via the S7 user program
To enable data transmission between the S7 controller and the PN/BACnet LINK, you need
to set the control information for both the server and the client functionality via the S7 user
program. This controller information is cyclically transmitted by the S7 controller to the
PN/BACnet LINK. You can find detailed information on this in the section Data exchange
between controller and PN/BACnet LINK (Page 32).
9.7

Programming

9.7.1

PLC tags

PLC tags are automatically created by the HSP when configuring the PN/BACnet LINK in the
TIA Portal; you can use these PLC tags in the S7 program for accessing the cyclic I/O
image. This means the parts of the I/O image allocated to the PN/BACnet LINK can be
accessed from the S7 program using logical names. The use of explicit addresses is
therefore not required in the S7 program.
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA
Configuring / Programming
9.6 Checking and compiling the configuration
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