Bus TopologyΒΆ
A CS31 system bus always contains only one bus master (CPU or communication module) which controls all actions on the bus. Up to 31 slaves can be connected to the bus, e.g. remote modules or slave-configured CPUs. Besides the wiring instructions shown below, the wiring and earthing instructions provided with the descriptions of the modules are valid additionally.
Bus topology for a CS31 system bus at COM1 (bus master at one end of the bus line)
Bus topology for a CS31 system bus at COM1 (bus master within the bus line)
Attention
:strong:Risk of malfunctions!
Spur lines are not allowed within the CS31 bus.
Loop the bus line from module to module.
Bus line: Correct
Bus line: Wrong