Configuration of the master
As already explained above, the Interbus coupler creates a data range with input and output bytes. The assignment of channels of the Bus Terminals to the bits and bytes of the process image is done by the Bus Coupler. The Interbus master exchanges a contiguous input and output data block with each Interbus coupler. The assignment of the bytes from this data block to the addresses of the process image is done via data function blocks in the PLC or the configuration software IBS SYS SWT or IBS CMD SWT G3 and G4 from Phoenix Contact. The corresponding manufacturer's tools should be used for other masters.
Software for the master configuration
Master software | Configuration software | Manufacturer |
|---|---|---|
PLC connection –version lower than 4 | IBS SYS SWT | Phoenix Contact |
PC connection –version lower than 4 | IBS SYS SWT | Phoenix Contact |
PLC connection –version 4 or higher | IBS CMD SWT G4 | Phoenix Contact |
PC connection –version 4 or higher | IBS CMD SWT G4 | Phoenix Contact |
Ensuring data consistency
The data consistency of the data from a station is secured by the Interbus transmission protocol. The consistency over the entire process image is secured by synchronous sampling. Inconsistencies may result due to the control CPU (usually a PLC) asynchronously accessing the data range of the Interbus master. Access to 16 bit words and partly to 32 bit double words is secured by most Interbus masters. Please refer to the respective manufacturer's manuals for greater clarity regarding the special methods of accessing the master connections. Common PLC connections are the S5 assemblies IBS S5 DCB and IBS S5 DSC as Interbus masters. The masters with the firmware version 4.0 are particularly easy to operate. The CMD configuration software allows the settings to be made under Windows. The byte-wise and bit-wise assignment of the peripheral data in the address range of the controller is possible. The data consistencies are selectable in groups.
Interbus standard-compliant
The BK4xxx/BC40xx devices work with the SUPI 3 (Serial Universal Periphery Interface) protocol chip. The SUPI 3 protocol chip handles the complete Interbus protocol. In comparison with the predecessor version (SUPI 2), the SUPI 3 offers extended diagnostics and error management. Please refer to the manuals for the Interbus masters used regarding the functions of the SUPI 3 chips that are supported.