Siemens SIMATIC ET 200AL - Page 1259

Description
2.2 Structure of PROFIBUS networks
PROFIBUS with STEP 7 V13
36 Function Manual, 12/2014, A5E03775446-AC
Configuration example
Figure 2-10 Configuration example with five RS485 repeaters
①
Connect terminating resistor
②
Do not connect terminating resistor
Maximum configuration
If you install a PROFIBUS network with RS485 repeaters, you may not connect more than
nine RS485 repeaters in series.