Installation manual

Rev. B 2 KEMU000826
03/26/04
SECTION 2:
CONTROLS AND CONNECTIONS
2.1 POS WITH A SINGLE COM PORT
If the POS system has a single serial port and it is already being utilized for printing, a
cable must be manufactured to connect a POS device to the AVBPIT1. This new cable
will allow the POS system to share Transmit (TX) and Signal Ground (SG) between the
AVBPIT1 and the existing printer.
The new cable can be completely remanufactured or made simply by splicing into the
existing cable and connecting Pins 2 and 5 (typically) of the POS serial port with pins 3
and 5 of the AVBPIT1. See the Figure below. For a typical system diagram, see
Appendix A, Figure 6.
Be careful to comply with all applicable RS232 standards when creating
this new cable. Although the Rapid Eye and PIT system only require 2
signals to effectively capture POS data, the serial ports on the POS
terminals may require other RS232 signals be addressed to operate
effectively. Some POS terminals require that the RTS and CTS signals be
connected together before the port will transmit data. Consult your POS
hardware manual for any POS-specific requirements.
POS-DB9
A
VBPITPOS-DB9
(RX) Pin 3
(SG) Pin 5
(TX) Pin 2
(SG) Pin 5
Connect to COM0
Channel of the
AVBPIT1
Figure 2: New Cable – POS with a Single COM Port