4 Communication
System Manual Compact Systems
Page 26 of 110
HI 800 141 E Rev. 2.02
4.3.2
Restrictions for Operating Protocols Simultaneously
PROFIBUS DP master or slave can only be operated on one fieldbus interface, i.e., two
PROFIBUS masters or slaves may not be operated at a time within a resource and,
therefore, they will not function.
Modbus master/slave RS485 can only be operated on one fieldbus interface. However,
simultaneous operation via RS485 and Ethernet is allowed.
i
No safety-related communication can be ensured with the available fieldbus protocols.
The communication system with fieldbus interfaces is connected to the safety-related processor
system. Only devices with safe electrical separation may be connected to the interfaces.
i
The fieldbus submodules PROFIBUS master can be used on controllers F20, F30, F35 or F60
with hardware revision 02.
