Executing A Bus Diagnosis Using Diaggetbusstate() - WAGO I/O SYSTEM 750 Manual

328 CANopen Master and Slave
10.4.1.3

Executing a Bus Diagnosis using DiagGetBusState()

To perform bus diagnostics, proceed as follows:
1. Log into CODESYS. To do this, click in the menu bar on Online > Login.
Information about the variables is then displayed in the Variable window
(Online view).
2. To start the PLC program, click Online > Start in the menu bar. Starting
this program also calls up the DiagGetBusState() function block and outputs
diagnostics information to the EXTENDEDINFO array.
In the online view of the Variable window, the array EXTENDEDINFO provides
information on the status of the slaves. An entry is reserved in the array for each
slave. The slave address is allocated to the array index. In this example, it is the
slaves with the station addresses 2 and 5 that store the diagnostics information. If
the device is configured as a slave, only the information for its own address is
available.
Display of Diagnostics Information
The diagnostic information is only displayed for the duration of one program
cycle. If the diagnostic information should be available for longer, a suitable
program must be written.
750-8208 PFC200 CS 2ETH RS CAN DPM
Version 1.1.0, valid from FW Version 02.06.20(09)
WAGO-I/O-SYSTEM 750
Manual