Standard Rear Rs485 Connection; Optional Rear Fibre Optic Connection; Figure 2.1-2 Standard Rear Rs485 Connection To A Pc; Figure 2.1-3 Additional (Optional) Rear Fibre Optic Connection To A Pc - Siemens 7sr220 Configuration Manual

1.1.2

Standard rear RS485 connection

1.1.3

Optional rear fibre optic connection

Figure 2.1-3 Additional (Optional) rear fibre optic connection to a PC

Sigma devices have a 25 pin female D connector with the following pin out.
Pin
2
3
4
5
6
7
8
20
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Figure 2.1-2 Standard rear RS485 connection to a PC

Transmit Data
Received Data
Request to Send
Clear to Send
Data set ready
Signal Ground
Received Line Signal Detector
Data Terminal Ready
7SR210 & 7SR220 Configuration Guide
Function
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