Optional Rear Rs485 + Irig-B Connection; Optional Rear Rs232 + Irig-B Connection - Siemens 7SR242 Duobias Technical Manual

2.1.4

Optional rear RS485 + IRIG-B connection

Figure 2.1-1
2.1.5

Optional rear RS232 + IRIG-B connection

Figure 2.1-2
Pin Relay Function
1 Not Connected
2 Receive Data (RXD)
3 Transmit Data (TXD)
4 Outut Supply +5 V 50mA
5 Signal Ground (GND)
6 Input Supply +5 V 50mA
7 Linked to 8 (volts free)
8 Linked to 7 (volts free)
9 Output Supply +5V 50mA
©2015 Siemens Protection Devices Limited
Chapter 2) 7SR242 Duobias Settings, Configuration & Instruments Guide
Additional (Optional) rear RS485 + IRIG-B connection to a PC
Additional (Optional) rear RS232 + IRIG-B connection to a PC
Chapter 2 Page 19 of 22