BECKHOFF FM33xx - Manual (Page 11)

Technical data
6 FM33xx
Pin assignment for the round connector
Round connectors
round connector
for input
round connector
for output
Pin assignment (Module) Male Connector
(Input) Female Connector
(Output)
PROFIBUS pin 1 A = RxD / TxD-N A = RxD / TxD-N
PROFIBUS pin 2 B = RxD / TxD-P B = RxD / TxD-P
PROFIBUS Termination pin 3 GND
PROFIBUS Termination pin 4 +5V
Power supply pin 5 +24V +24V
Power supply pin 6 0V 0V
Attention
Protect the power supply (24 V) by using a fuse (max. 4 A, medium time-
lag), to protect the modules in case of short circuit at the hybrid cable
(PROFIBUS / Power Supply).