Error handling and diagnostics
EL6752
89
Version: 2.1
7.3.3
Beckhoff DeviceNet slave device - CouplerState
The CouplerState provides information on the terminal bus communication of the Beckhoff Bus Coupler. This
information is available for Beckhoff BK52x0 Bus Couplers, devices from the IPxxxx-B520 IP Box-family and
the IP Link family.
Fig. 76: CouplerState in the TwinCAT tree
CouplerState
0x00 = I/O Run
0x01 = I/O Error (KBus, IO or Terminal Error)
0x80 = I/O idle mode / fieldbus error, no output data are written
0x08= diagnostic information for an analog/special function terminal is pending. This function first hast to be
activated at the couplers. The diagnostic data can then be read in the associated registers of the terminals,
IP/IL modules
