K-bus
 | Bus Terminal and end terminal required To operate a Bus Terminal Controller of the BC or BX series, at least one Bus Terminal with process image and the end terminal must be connected to the K-bus. |
BX Settings tab
Check Terminals during Start-up
When a boot project is created, the current Bus Terminal configuration is stored. The connected Bus Terminals are checked when the Bus Terminal Controller restarts. If this option is selected, the Bus Terminal Controller does not enter into data exchange. The PLC project will not be started.
Auto K-Bus Reset
Once a K-bus error has been rectified, the Bus Terminal Controller automatically resumes the data exchange.
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Once a K-Bus error has been rectified, the outputs become active again immediately! Ensure that the outputs are reactivated immediately and that analog outputs retain their programmed value, if this is not dealt with in your PLC project. |
Clear Outputs on Breakpoint
If breakpoints are set in PLC Control, the K-Bus is no longer processed, i.e. the outputs are set to a safe state (zero).
K-Bus Sync Mode
Writing and reading of the Bus Terminals can take place synchronously with task 1 or the fieldbus.
K-Bus Re-Trigger
If the processor is busy dealing with the PLC project or the SSB, the K-Bus cannot be processed for a certain amount of time. This leads to triggering of the Bus Terminal watchdog and dropping of the outputs. The Bus Terminal Controller is set such that the K-bus watchdog is re-triggered 3 times after 85 ms. The K-Bus watchdog would then be activated.
K-Bus Re-Trigger 0: 100 ms
K-Bus Re-Trigger 1: 2 x 85 ms = 170 ms
K-Bus Re-Trigger 2: 3 x 85 ms = 255 ms
K-Bus Re-Trigger 3: 4 x 85 ms = 340 ms
Reaction on K-Bus Error
In the event of a K-Bus error, the K-Bus inputs are set to "0" or retain their last state.
Response on PLC-Stop
The user can set the behavior of the fieldbus output data in the event of the PLC project being stopped. The master will use these data as input data. In the event of a PLC stop, the data can be set to "0" or remain unchanged.
BX Diag tab
Display of the cycle time for task 1, K-bus, fieldbus processing and the SSB load.
Factory Settings: the Bus Terminal Controller is set to its delivery. These settings are reactivated via Restart System or by switching the system off and on again (display shows DEFAULT-CONFIG).
Reset Maximum Values: resets the maximum values
K-Bus variables
PLC interface: Not supported (only included for moving CX or BX projects)
K-bus state: see Diagnostics