Model 484A SerialPRO
®
II Interface User’s Guide
Functional Description
The 484A SerialPRO
®
II Interface provides a dedicated, easy-to-use and economical RS232 serial connection to APG
cash drawers. This interface will plug directly into the RS232 serial port of the host device (computer, terminal, etc.). It
has diagnostic lights to assist in installation and troubleshooting.
The unique design of this dedicated interface allows you to select 4 different levels of security for the drawer opening
sequence, significantly reducing the chance of unauthorized openings that result from noise associated with power up and
power down of the system. The DIP switches for selecting the opening sequence are conveniently located on the bottom
of the cash drawer unit near the cable exit. These DIP switches also allow for the selection of drawer status reporting
location as well as other setup and diagnostic functions.
This interface is designed for standard RS232 implementations where DTR and RTS are held high while the port is open.
In most situations it is powered by the serial port, eliminating the need for an external power supply. An external power
supply can be used in situations where DTR and RTS are not consistently held high as is the case with Windows NT.
The interface includes a cable for connection to the serial port. As a standard product, this cable is equipped with a 9 pin
female (DB9F) connector, and a 25 pin female (DB25F) to 9 pin male (DB9M) adapter cable.
I. Configuration and Use
This Guide assumes the user has some technical experience connecting computer peripherals.
1.
Verify DIP switch settings are applicable to the system. The DIP switches (see
Figure 1
below) on the electrical
interface board are accessible from the bottom of the cash drawer unit.
2.
Connect the cash drawer to the appropriate dedicated RS-232 serial COM port on the host device.
3.
Open COM port and wait twelve seconds to charge drawer (first time only) before transmitting the opening sequence.
4.
Open the cash drawer through the software, or refer to step 5 below.
5.
Transmit a BEL character from the host to open cash drawer. See
Section II
and
Section III
for examples.
6.
If cash drawer openings occur on power up/down, a higher level of noise immunity should be used. This can be done
by setting DIP switch 9 and switch 10 off, switch 8 on, and send any sequence of characters, such as “UU”, that
produce a minimum of 8 pulse edges. Refer to
Chart #1
for more details.
Switch Settings Description
1
Diagnostic Tool
off
* Power Test disabled
ON
Power Test enabled (
Do not use until instructed
.)
2
Extended Security
ON
* RTS Disable set
off
RTS Disable released (
Do not use until instructed
.)
3
4
Signal Source
ON
off
* PC operation enabled (DB9 contact 3, DB25 contact 2)
off
ON
Terminal operation enabled (DB9 contact 2, DB25 contact3)
5
CTS/RTS Handshaking
ON
*
handshaking enabled (
If
ON
, do not enable CTS drawer status
.)
off
handshaking disabled (RTS at DB9 contact 7, DB25 contact 4)
5
6
7
Drawer Status
off
off
* drawer status disabled
off
ON
off
CTS drawer status (DB9 contact 8, DB25 contact 5)
off
ON
RI drawer status (DB9 contact 9, DB25 contact 22)
8
9
10
Minimum Opening Pulse Edges
off
ON
off
* Pulse window set to 2 edges
off
off
ON
Pulse window set to 1 edge
ON
off
off
Pulse window set to 8 edges
*
The APG default settings are shown as
bold text
above.
FIGURE 1
