Instruction manual

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9. Configuration Switches
There are two configuration DIP switches (marked “CFG”) located on the unit
near the RS232 port.
Switch #1.........Firmware update switch. Place in “OFF” position for normal
operation, and in the “ON” position only when new firmware is
to be downloaded to the unit. Refer to section 17 for more
information.
Switch #2.........RS232 port selection switch. When “OFF” at unit startup, the
RS232 port will act as the serial console, regardless of the
port’s configuration as indicated on the web interface (refer to
section 14.1 for more information on the serial console). When
“ON” at unit startup, the RS232 port carries whatever protocol
was assigned to it via the web interface. Note that the state of
this switch is only detected when the gateway boots up.
10. Auxiliary Power Supply
The ICC part #10456 120VAC/9VDC power supply can be used to power the
unit via the AUX PWR input. If providing your own auxiliary power supply,
ensure that it adheres to the following specifications:
Connection diagram................
+
Voltage rating.......................... 9 - 40VDC
Current rating.......................... 500mA (@9VDC)
The gateway’s AUX PWR input uses the CUI, Inc. PJ-002A (2.1mm x 5.5mm)
or equivalent DC power jack, which mates with the PP-002A (2.1mm x 5.5mm)
or equivalent power plug.
11. Internal Battery
The interface has an internal coin-cell type battery that is currently only used to
support the real-time clock when the unit is unpowered. This battery is
designed to last the lifetime of the product under normal use. However, if the
interface is left unpowered for several years, the battery may become
exhausted. If the battery becomes discharged, it can be replaced by removing
all power sources from the gateway according to the required safety
procedures, and then carefully popping out the discharged battery and
replacing it with a Panasonic BR1632 or equivalent component.