Technical specifications
7.5 Hardware descriptions
SIMATIC IOT2020, SIMATIC IOT2040
Operating Instructions, 10/2016, A5E37656492-AB
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2 RxD Received data (I)
4 DTR Data terminal ready (O)
Transmitted data - (O) for full-duplex mode
Transmitted data + (O) for full-duplex mode
Receive data + (I) for full-duplex mode
Receive data - (I) for full-duplex mode
Transmit / receive data - (I/O) for half-duplex mode
Transmit / receive data+ (I/O) for half-duplex mode
5 M Signal ground