Fieldbus Communication - Honeywell BCU 460 Technical Information

Fieldbus communication

8 Fieldbus communication
PROFIBUS DP, PROFINET and EtherNet/IP are man-
ufacturer-independent, open standards for industrial
network communication. They cover the requirements
for automation technology (manufacturing automa-
tion, process automation, drive applications without
functional safety). They are bus variants for fieldbus
communication optimized for speed and low connec-
tion costs.
FCU
L1
PLC
BCM
1
The basic function of fieldbus communication is the
exchange of process and required data between a con-
troller (e.g. a PLC) and several distributed devices (e.g.
BCM with BCU).
BCU 460, BCU 465 · Edition 11.19
P
HT
BUS
PROFINET
BCM
2
The signals from the devices are read into the controller
cyclically. There, they are processed and are then out-
put to the devices again.
BCM
3
50