Instructions

Connector Pin Assignments 71
Doc: HMSI-27-306, Rev. 3.11Anybus Communicator PROFIBUS User Manual
A.4.5 Typical Connection (RS485)
A.4.6 Typical Connection (RS422 & 4-Wire RS485)
Note: Bias resistors are normally not needed on RS422, but may be required when using 4-wire RS485.
A.4.7 Typical Connection (RS232)
470R
+5V
Signal
Ground
Cable
Shield
RS485 -
RS485 +
RS485 - RS485 + RS485 - RS485 + RS485 - RS485 + RS485 - RS485 +
RS485 -
Signal
Ground
RS485 +
120R 120R
470R
Node Node Node Node End NodeAnybus Communicator
Signal Ground Signal Ground Signal Ground Signal Ground
470R
470R 470R
+5V
Signal
Ground
Cable
Shield
RS422 Rx-
RS422 Rx+
RS422 Tx-
RS422 Tx+
120R
RS422 Tx-
RS422 Tx+
RS422 Rx-
Signal
Ground
RS422 Rx+
120R
470R
DeviceAnybus Communicator
Signal
Ground
RS232 Rx
RS232 Tx
RS232 Tx
Signal
Ground
RS232 Rx
DeviceAnybus Communicator
Cable
Shield