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.
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.
The fieldbus submodules PROFIBUS master can be used on controllers F20, F30, F35 or F60
with hardware revision 02.