IBASE IB815 - Manual (Page 20)

INSTALLATIONS
16 IB815 User’s Manual
COM2 (JP13) is jumper selectable for RS-232, RS-422 and
RS-485
Pin # Signal Name
RS-232 RS-422 RS-485
11 DCD TX- DATA-
12 RX TX+ DATA+
13 TX RX+ NC
14 DTR RX- NC
15 GND GND GND
16 DSR RTS- NC
17 RTS RTS+ NC
18 CTS CTS+ NC
19 RI CTS- NC
JP19: System Function Connector
JP19 provides connectors for system indicators that provide light
indication of the computer activities and switches to change the computer
status. JP19 is a 16-pin header that provides interfaces for the following
functions
Speaker: Pins 1 - 4
This connector provides an interface to a speaker for audio tone
generation. An 8-ohm speaker is recommended.
Pin # Signal Name
1 SPEAKER
2 NC
3 GND
4 +5VS
Power LED: Pins 9-11
The power LED indicates the status of the main power switch.
Pin # Signal Name
9 +5VS
10 NC
11 GND