Unitec POS4000/V2 - Manual (Page 136)

POS4000
Document Number: POS4003 128
Document Title: POS4000/V2 Operations Manual
To prevent this, you can do one of two things. 1) Set the maximum code length
of all codes to 5 (see section 6.2.4). This will decrease the VALID codes
database to 3000 and should therefore prevent the problem, or 2) Periodically
delete USED CODES and/or OLD VALID CODES from memory by using the
"Clear All Used" (see section 6.10.4) and "Clear OLD Codes" (see section
6.10.5) commands. This should be done often enough to keep fewer than 3500
valid codes in memory. How many carwash codes are generated and how soon
they are used will determine how frequently old codes should be deleted.
WIRING INFORMATION:
SIGNAL
NAME
PIN for 6.1
hardware
PIN for 6.2
and higher
hardware
Data INPUT
4 2
Data
OUTPUT
3 3
SIGNAL
GND
1 5
To distinguish 6.1 from 6.2 hardware, look at the label attached to the base of the
unit. If the MODEL field has "POS4000", then it is 6.1 hardware; if it has
"POS4000/2" (or /3 etc.) then it is 6.2 or higher hardware. Note that the 6.2 and
higher pin outs are standard for a 9-pin DTE serial port.
Codes generated for external POS type 1 limited to 5
digits in length (4 significant digits plus a 0). There are
approximately 6500 possible 5 digit codes. If the valid codes
database is allowed to fill to the maximum of 5000 codes, it will
increase the time required to generate a new code. This increase in
time may result in a communication error between the POS4000
main console and the external POS equipment. This
communication error results in either no code or an invalid code
being printed on the customer's receipt.
IMPORTANT: