Siemens 7sr220 - Optional RS485 with IRIG-B; Optional RS232 with IRIG-B

7SR210 & 7SR220 Configuration Guide
1.1.4 Optional rear RS485 + IRIG-B connection
Figure 2.1-4 Additional (Optional) rear RS485 + IRIG-B connection to a PC
1.1.5 Optional rear RS232 + IRIG-B connection
Laptop computer
USB or 9 pin male
D connector
9 way D connector
RS232 cross-over
cable or RS232 to
USB converter
cable
IRIG-B
COM 3
Figure 2.1-5 Additional (Optional) rear RS232 + IRG-B connection to a PC
Pin Function
1 Carrier Direct (CD)
2 Receive Data (RXD)
3 Transmit Data (TXD)
4 Data Terminal Ready (DTR)
5 Signal Ground (GND)
6 Data set ready (DSR)
7 Request to send (RTS)
8 Clear to Send (CTS)
9 Ring Indicator (RI)
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