BCU 580 · Edition 11.15l
39
Profinet
7 .1 BCU and bus module BCM
The optional bus module BCM 500 is required to inte-
grate 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 sock-
ets for connection to the fieldbus on its front. The con-
nection 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 Negotia-
tion and Auto Crossover are satisfied.
Safety-related signals and interlocks (e.g. safety inter-
lock) must be wired independently of the fieldbus com-
munication direct to the BCU and the protective system
(e.g. FCU).
▼