TransCore encompass 4 - Table 4-6 RS-232 Interface Signal Wiring for Colored-Wire Pair Cable

Installing the Encompass 4 Reader
4-31
Connecting the Encompass 4 Reader Colored-Wire Pair Cable
Table 4-6 shows the RS
–232 colored wire assignments.
Table 4-6 RS–232 Interface Signal Wiring for Colored-Wire Pair Cable
Signal from
Enc
ompass 4
Reader
Colored-Wire Pair Cable
Connect
Wire to
Host DB9
Pin
Connect
Wire to
Host DB25
Pin
Wire Pair
from
En
compass 4
Reader
Color Used
TxD —
Encompass 4
Rea
der output,
host input
Red/Black Black Pin 2 Pin 3
RxD —
Encompass 4
Rea
der input, host
output
Red Pin 3 Pin 2
Signal ground Yellow/Black Yellow or
Black
Pin 5 Pin 7
Optional for hardware handshaking
RTS —
Encompass 4
Rea
der output,
host input
Yellow/Red Yellow Pin 8 Pin 5
CTS —
Encompass 4
Rea
der input, host
output
Red Pin 7 Pin 4
To connect the colored-wire cable using RS–232 interface
1. Connect the black wire (transmit data) from the red and black wire pair to pin 2
of the DB9 connector or pin 3 of the DB25 connector.
2. Connect the red wire (receive data) fr
om the red and black wire pair to pin 3 of
the DB9 connector or pin 2 of the DB25 connector.
3. Connect either the yellow or black wire
(signal ground) from the yellow and
black wire pair to pin 5 of the DB9 connector or pin 7 of the DB25 connector.
4. Plug the DB9 connector or DB25 connector into t
he PC.
If the host is set up for hardware handshaking, use the following procedures:
1. Connect the yellow wire (RTS) from the yellow and red wire pair to pin 8 of the
DB9 co
nnector or pin 5 of the DB25 connector.