11
DPI-500
Technical Manual
2) Restrictions for transmission:
"P" - Will not respond if a) scale is in motion; b) positive overload; c) negative overload;
d) negative gross weight; or e) scale is in "Display Check Mode".
"Z" - Will not respond if a) scale is in motion; b) scale is not in gross mode; or c) scale is
not
within zero capture range.
"T" and "G"- Will not respond if a) scale is in motion; or b) scale is not in net mode.
"N" - Will not respond if a) scale is in motion; or b) scale is not in gross mode.
Will send the "Invalid" format when a) scale is in motion; b) under zero; or c) over
capacity.
Gross/Net/Tare Print Mode
The Gross/Net/Tare Print Mode is designed for use with a printer.
Figure 8
shows the fixed
format of the print ticket. For printers with limited buffers, this mode supports the DTR pin hand-
shaking which can be wired to the indicator's RXD pin which then functions as a CTS pin. This
mode allows the printout of a 6-digit ID number which can be entered via the User Menu.
Figure
9
shows a suggested cable diagram for interfacing to a serial printer which supports the DTR pin
(refer to the printer's manual).
ID. NO.
123456
GROSS
25.00 LB
TARE
1.48 LB
N E T
23.52 LB
Figure 8: Print Ticket
CTS
2
TXD
3
GND 5
3
RXD
20 DTR
7
GND
Figure 9: Connection to Printer
Indicator
Printer
*Please note that the
TARE and NET fields are
blank when a tare has not
been established in the
system.*
RS-232 Communications (cont.)
DSUB9
DSUB25
