9 / 65Issued: 29.11.2012 Version: KR C4 Interbus 1.1 V2 en (PDF)
2 Product description
2 Product description
2.1 Overview
The Interbus PCI interface is a combined master/slave controller board. Mas-
ter and slave are housed on two separate PCI plug-in cards and equipped with 
their own processors. 
The factory-installed firmware can be updated via the serial diagnostic inter-
face. The parameterization can be saved in a non-volatile memory on the 
module. Process data channels and parameter channels (PCP) are support-
ed.
Configuration, mapping and diagnosis can be carried out using the Config+ 
tool from Phoenix Contact or WorkVisual from KUKA Roboter GmbH.
The Interbus enables communication between the robot controller and the var-
ious I/O units.
The Interbus PCI controller board is available in two versions: one for connec-
tion via copper cables and one for fiber-optic cables.
Interbus is a field bus system that works with a ring structure and active cou-
pling between the devices. The bus access procedure is a master/slave sys-
tem. The data are passed from the master to the slaves as if through a shift 
register.
Properties
 Data transmission via ring system
 Master/slave system
 Connected devices are automatically loaded by means of an identification 
cycle
 Supports PCP functionality
 Configurable and parameterizable across the network
 No terminating resistors
 No device address settings have to be made on-site
 Can be expanded simply
 Flexible adaptation to system topology
 Diagnostic options
 Transmission speed of 500 or 2000* kBaud (baud rate). Transmission at 
2000 kBaud must be supported by all devices.
 I/O units can be switched on/off
 Branches are easy to implement using remote bus branch terminals
 Branches can be cascaded freely
 Maximum of 512 devices, of which max. 254 remote bus devices
 Maximum of 62 PCP devices
 Maximum cable length between the slave devices: 400 m
 Maximum cable length with copper cables: 13 km
 Maximum cable length with polymer fibers: 70 m
 Maximum cable length with HCS (hard-clad silica): 400 m
 Maximum cable length with fiberglass cable: 3500 m
 Optional operation of master and slave at 500 kBaud or 2 MBaud 
The range of functions of the G4 firmware (= 4th generation) is re-
stricted by the driver as follows: the driver does not support the distri-
bution of process data from the slave to multiple address blocks. The 
slave process data range must thus be located in a single block starting at a 
freely selected address in the MPM.