7 / 65Issued: 29.11.2012 Version: KR C4 Interbus 1.1 V2 en (PDF)
1 Introduction
KCP The KCP (KUKA Control Panel) teach pendant 
has all the operator control and display functions 
required for operating and programming the 
industrial robot. 
The KCP variant for the KR C4 is called KUKA 
smartPAD. The general term “KCP”, however, is 
generally used in this documentation.
Configuration file Text files with specifications for parameters and 
settings.
KR C KUKA Robot Controller.
KRL KUKA Robot Language: KUKA robot program-
ming language. 
KUKA.HMI The KUKA user interface on the screen of the 
robot controller.
Local bus Designation for the sub-rings of an Interbus sys-
tem.
FOC Fiber-optic cables: made of glass or plastic 
fibers. Greater immunity to interference than 
copper cables; electrical potential differences 
have no effect.
MAU Medium Attachment Unit: connection unit for a 
bus device.
MAU warning Warning of decreasing transmission quality/
weakening reception level on the optic transmis-
sion link, in order to be able to isolate and elimi-
nate the cause (maladjustment, dirt, etc.) before 
it leads to a malfunction.
MPM Multi-Port Memory: Interbus component that 
communicates between the bus and the proces-
sors.
PCI Peripheral Component Interconnect: PC bus for 
coupling plug-in cards to the processor.
PCP Peripherals Communication Protocol: protocol 
for sending info telegrams (e.g. message texts to 
be displayed) via an Interbus. It is not actively 
used by robot controllers, but forwarded.
PDU Protocol Data Units: data packets on the Inter-
bus
Polymer fiber cable Plastic cable. Cheaper than glass fiber or HCS 
fiber, but with a shorter range.
PLC Programmable Logic Controller: is used in sys-
tems as a higher-level master module in the bus 
system.
SW Software
Telnet Simple terminal communications protocol. It is 
used, for example, to configure individual hard-
ware units.
Term Description