BCU 580 · Edition 11.15
36
7 .1 BCU and bus module BCM
The optional bus module BCM 500 is required to integrate the
BCU in the Profinet system.
Control signals (for start, reset and air actuator control), signal
states from the device inputs and outputs and information
about the device status (operating states, flame signal and
current program step), warnings and faults can be transferred
via the bus module between the BCU (IO device) and PLC
(IO controller).
Bus module BCM 500 has two RJ45 connection sockets for
connection to the fieldbus on its front. The connection sockets
are combined with an internal 2-port switch. This allows the
BCM 500 together with the BCU to be integrated in various
network topologies (star, tree or line topology). Requirements
such as Auto Negotiation and Auto Crossover are satisfied.
Safety-related signals and interlocks (e.g. safety interlock) must
be wired independently of the fieldbus communication direct
to the BCU and the protective system (e.g. FCU).
BUS
FCU
P
HT
56
BCU
BCM
L1,
M
ϑ
PROFINET
53
55
52
54
90°
➔
0
0
➔
90°
3PS
Temperature
controller
PLC
All network components which connect the automation system
and the field devices must be certified for Profinet use.
For information on planning and the structure of a Profibus
network and the components to be used (e.g. cables, lines and
switches), see Profinet Installation Guide at www.profibus.com.
Profinet
