Opc-g11s-mn2 overview, 1 physical interface – GE Industrial Solutions AF-300 P11_G11 Metasys N2 User Manual
Page 9
USER MANUAL
Revision 1.01
2000-11-06
HMS INDUSTRIAL NETWORKS AB
9
.
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.