
Number Name
Description
15
Serial port 2
terminal
block
Serial port 2 terminal block (TX, RX, GND) may be used to interface to an external
modem or PC terminal program. Serial port 2 shares a communications channel with the
back-up modem. If a back-up modem is installed, ensure that no devices are connected
to this serial port.
16
Ethernet
connectivity
LEDs
The 2 Ethernet LEDs indicate the status of the Ethernet connection. The left LED
indicates data activity on the Ethernet port; the right LED indicates the Ethernet link is
active.
17
Ethernet
interface
The Ethernet interface provides for the connection of a PC to the controller for the
purposes of programming the system.
18
USB
interface
This USB interface is used to access browser programming or a terminal program.
19
Serial port 2
This RS232 serial port may be used to interface to an external modem or PC terminal
program. Serial port 2 shares a communications channel with the back-up modem. If a
back-up modem is installed, ensure no devices are connected to this serial port.
20
Serial port 1
This RS232 serial port may be used to interface to an X10 protocol device.
21
Optional
plug-in
modules
A primary (left slot) and back-up (right slot) module can be connected to the controller.
These modules can be GSM or PSTN modems offering increased communication
functionality. The back-up modem should not be connected if serial port 2 interface is
connected to an external modem or other device.
22
Real-time
clock
battery
Battery for real-time clock (RTC).
23
Auxiliary
power input
12V input from A1 on SPCP355.300 Smart PSU.
See also
Powering expanders from the auxiliary power terminals
SPC4xxx/5xxx/6xxx – Installation & Configuration Manual
Controller hardware
© Vanderbilt 2018
73
A6V10276959-d
11.2018