GE Industrial Solutions AF-300 P11_G11 Metasys N2 - Manual (Page 9)

USER MANUAL
Revision 1.01
2000-11-06
HMS INDUSTRIAL NETWORKS AB 9
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6. OPC-G11S-MN2 Overview
These sections contain all necessary information to start-up and configure the OPC-G11S-MN2.
6.1 Physical interface
Isolation: The bus is galvanically separated from the other electronics with an on board DC/DC converter. Bus
signals (N2+ and N2-) are isolated via opto-couplers.
Bus connection: The OPC-G11S-MN2 connects to the Metasys network with a 9-pin female DSUB connector or
a 6-pole terminal block. For the pin layout, refer to Table 1.
Pin
Terminal
Pin DSUB Name Function
6 Housing Shield Connected to PE (Physical Earth)
- 1 Not used -
- 2 Not used -
- 3 Not used -
- 4 Not used -
2 5 Ref Isolated GND from RS 485 side *
- 6 +5V BUS Isolated +5V from RS 485 side *
4 7 N2- Negative RxD/TxD according to RS 485 specification
3 8 N2+ Positive RxD/TxD according to RS 485 specification
- 9 Not Connected -
Table 1 Pin Layout
• +5V BUS and Ref are used for bus termination. Some devices, like optical transceivers (RS485 to fiber
optics) might require external power supply from these pins.