Section 2 Installation Installing the PM86x/TP830 Processor Unit in Single Configuration
3BSE036351-510 A 85
COM3 Port
The COM3 is an RS-232C port with modem signals. This port is used for serial
protocols such as Modbus, Siemens 3964R, COMLI or custom-design.
Table 6. TP830 COM3 Connections (RJ45 connector)
Pin Designation Direction Description
1 RTS Out Request To Send
2 DTR Out Data Terminal Ready
3 TD Out Transmit Data
4 0V - Signal ground
5 0V - Signal ground
6 RD In Receive Data
7 DCD In Data Carrier Detect
8CTSInClear To Send
Housing Shield - Shield
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