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CHAPTER 3: CONNECTING TO DEVICES AND NETWORKS
Supplying power through the D.20 Link
To power peripherals
through the D.20 Link:
Ethernet
To connect the D.20
RIO to network
devices
D.20 RIO - HARDWARE USER'S MANUAL
Power is typically supplied to peripheral devices directly through the WESTERM boards.
However, you can configure the D.20 RIO to supply peripheral devices with power through
the D.20 ports. In systems with more than five peripherals, an external power supply and
D20 DC interface module (520-0154) are required.
The Auxiliary terminals and/or power through the D.20 port should not be loaded by
peripherals to exceed 165 W.
Table 11: Typical power consumption for D20 I/O modules
D20 I/O Module
D20A
D20C
D20K
D20S
Connect power to D20A, D20S, D20K, and D20C peripheral boards through the D.20 HDLC
Link using a daisy-chain series of connections from peripheral to peripheral.
1.
Ensure JP1is set correctly for your peripheral devices. See "JP1: Power supply to D.20
connectors" on page 23.
2.
Connect the D.20 link DB9 connector to the J1 input on WESTERM peripheral board
number one.
3.
Connect the D.20 link DB9 connector from the J2 connector and into the J1 connector
on WESTERM peripheral board number two.
4.
Repeat steps 2 and 3 for each WESTERM peripheral board in series.
Result: The peripherals are now connected for power using the D.20 Link.
The D.20 RIO can connect to one or two networks through two Ethernet connections.
Within the operating system of the D.20 RIO, LAN A is assigned to Ethernet interface eth0
and LAN B is assigned to Ethernet interface eth1. The interfaces eth0 and eth1 can also be
bonded for redundant operation.
All RJ-45 connectors have the same signal definition. However, the Ethernet ports are auto
MDI/MDIX and can support a straight-through or crossover cable.
Plug network cables into the D.20 RIO Ethernet ports.
The D.20 RIO is intended to be used on a secure LAN behind a firewall. It is not designed to
be used as a gateway device.
The D.20 RIO is intended to be used in a 10/100 Mbps network; the D.20 RIO does not
communicate on a dedicated 1Gbps network.
SUPPLYING POWER THROUGH THE D.20 LINK
Power Consumption
20 to 60 VDC, 8 W typical
20 to 60 VDC, 5 W typical
20 to 60 VDC
4 W typical, 11 W with all relays energized
20 to 60 VDC, 4 W typical
GE Information
33
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