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2.7 Remote I/O Port
This DB-9 connector (labeled 'Remote I/O') provides the RS-485 serial interface to the legacy 505/2500 Remote
I/O network. The pinout for this connector is shown below:
2.8 Profibus DP Port
On models where the controller can be configured as Profibus master, this DB-9 connector (labeled 'Profibus-DP')
provides the RS-485 interface to the Profibus-DP network. The pinout for shown below. The cable shield is
connected to 'Chassis Ground'. Pins 5-6 are used for the bias circuit.
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CTI Janus Programmable Automation Controller IOG
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