Internal Interfaces; Arduino Shield Interfaces - Siemens SIMATIC IOT2050 Operating Instructions Manual

Hardware descriptions

10.3 Internal interfaces

Pin
8
9
Assignment RS 422
Pin
1
2
3
4
5
6
7
8
9
Assignment RS 485
Pin
1
2
3
4
5
6
7
8
9
10.3 Internal interfaces
10.3.1

Arduino shield interfaces

The tables below show the pin assignment of the interfaces of the Arduino shield, depending
on the operating mode.
The position of the interfaces and Pin 1 of the respective interface is available in section
"Motherboard (Page 52)".
56
Short description
CTS
RI
Short description
TX-
TX+
RX+
RX-
M
nc
nc
nc
nc
Short description
Data-
Data+
nc
nc
M
nc
nc
nc
nc
Meaning
Clear to send (I)
Incoming call (I)
Meaning
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
Signal ground
Meaning
Transmit / receive data - (I/O) for half-duplex mode
Transmit / receive data+ (I/O) for half-duplex mode
Signal ground
Operating Instructions, 03/2020, A5E39456816-AA
SIMATIC IOT2050