3
Connection assignments for COM1 RS-232 communication terminal on the TI-1680 are shown below.
RS-232 Connector J9
Pin No.
Wire Name
Pin No.
Wire Name
1
RXD
4
RTS
2
TXD
5
Ground
3
CTS
Connection assignments for COM1 USB communication terminals on the TI-1680 are shown below.
USB Connector J6
Pin No.
Wire Name
Wire Color
Pin No.
Wire Name
Wire Color
1
VBUS
Red
3
D+
Green
2
D-
White
4
GND
Black
CONNECTING THE CONTROL I/O
The TI-1680 indicator features one remote input and four output terminals for connection to process
control equipment. A +5VDC terminal is also included for connection to the outputs if an external supply is
not available.
The outputs are labeled OUT1-OUT4. The single remote input is triggered by simple contact closure. For
suggested wiring diagrams, see Appendix D.
Connection assignments for all control I/O terminals on the TI-1680 are shown below.
Control I/O Connector J4
Pin No.
Wire Name
Pin No.
Wire Name
1
+5V
6
OUTPUT1
2
GND
7
OUTPUT2
3
INPUT
8
OUTPUT3
4
GND
9
OUTPUT4
5
CATCHDIODE
CONNECTING THE RS-232 PORT (COM2)
The J11 terminal allows for a 2
nd
RS-232 port. This is realized by an optional board soldered to J11 pads.
RS-232 Connector J9A
Pin No.
Wire Name
Pin No.
Wire Name
1
RXD
4
RTS
2
TXD
5
Ground
3
CTS
CONNECTING THE OPTIONAL WLAN (COM2)
The J11 terminal allows for an optional WLAN (Wireless Ethernet) communications port. This is realized
by an optional board soldered to J11 pads.
