Kramer Electronics FC-24ETH - Manual (Page 11)

Defining the FC-21ETH, FC-22ETH and
FC-24ETH Ethernet Controllers
7
Figure 2 defines the rear panel of the FC-21ETH.
Figure 2: FC-21ETH Ethernet Controller Rear Panel
# Feature Function
1 SERIAL 3-pin
Terminal Block Connect to an RS-232 or RS-485 controlled device.
When connecting as an RS-485 port, the connections are G,
B, A in place of G, Rx, Tx
2 ETHERNET RJ-45
Connector Connect to the PC or other controller directly or via a LAN
(see
Section 6.1 )
3 F/W UPGRADE USB
Connector Connect to a PC to upgrade the firmware
4 RS-485 TERM Switch Terminates the RS-485 bus, (see Section 8.3 ).
Slide down when this is the last device on an RS-485 bus.
Slide up when this device is not the last device on an RS-485
bus
5 SERIAL SELECT
Button Selects either RS-232 or RS-485 serial communication, (see
Section 8.3 ).
Depress for RS-485 serial communication.
Release for RS-232 serial communication
6 5V DC Connector Connect to the 5V DC power supply, center pin positive