18
SERIAL INTERFACE
Female RJ45 connector
J15
1
n.c.
2
GND
3
TX (out) During transmission, takes the value -VRS232 and +VRS232, depending on data
4
RX (in) During reception, takes the value -VRS232 and +VRS232, depending on data
5
RTS (out) When +VRS232, printer is ready to receive data
6
n.c.
7
n.c.
8
n.c.
NOTES
DEVICE > PC connection
The following picture shows an example of connection between the device and a personal computer using an 8 pin serial
RJ45 male connector and a 9 pin female connector.
RXD
GND
GND
RTS
RXD
TXD
TXD
RTS
DB9
1
2
3
4
5
6
7
8
9
1
2
3
RJ45
4
5
6
7
8
DEVICE PC
When use a serial cable, we recommend the installation of a ferrite core on the power supply cable.
Given the presence of the RS232 standard, logic value “0” corresponds to the voltage value +VRS232 (voltage value
between +3Vdc and +15Vdc) and logic value “1” corresponds to the voltage value -VRS232 (voltage value between
-3Vdc and -15Vdc.
28
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