Sample Program; Tasks; Programming - WAGO 750-8 Series Manual

Sample Program

Note
Access options
For the visualization of the WAGO-I/O-PRO CAA, it is essential to
establish a connection between the PC and the WAGO fieldbus controller.
Depending on the fieldbus controller used, two options are available. The
first option is available for all types of fieldbus controllers. Connection to
the fieldbus controller's service interface is established via 750-923 USB
communication cable. For the ETHERNET fieldbus controllers (e.g. KNX
IP and BACnet/IP), there is the option of connecting via the ETHERNET
interface.
5 Sample Program
5.1

Tasks

The WAGO-I/O-SYSTEM is to read and configure two Thermokon WRF06LCD
multifunction room operating units WRF06LCD RS-485 Modbus®. The available
ThermokonWRF06_01.lib library is used for this purpose.
5.2

Programming

The FbWRF06Master function block is used to establish a connection between
the controller and room operating units. This connection is implemented using an
RS-485 module. The individual room operating units are addressed cyclically
using the FbWRF06Master.
The data to be received or sent is exchanged between the FbWRF06Master and
all other WRF06-function blocks via the "typWRF06" input/output variable.
The multifunction room operating units can be configured via the
FbWRF06Config function block in conjunction with the associated
ConfigWRF06 visualization.
Note
Function Blocks
Both "FbWRF06Master" and "FbWRF06Config" function blocks are only
allowed to be requested once per bus segment.
Anwendungshinweis
9