46062-0299 <90-00016>
P
AGE
11
S
TRAP
S
ETTINGS
Set the straps as required for the specific application.
There are no strap settings for the printer port; RS-232 is the
only interface available on this port.
The straps for the master and data ports are located beneath the
power supply subassembly; refer to Fig. 5 for the location of the
power supply. To access the straps:
♦
Remove the four screws securing the subassembly.
♦
Pull the subassembly straight up, exercising caution not to
bend the subassembly connector pins.
Refer to Figs. 10 and 11 for the specific strap locations for
RS-232 and RS-422 asynchronous communications on the
master and data ports.
NOTE:
Many straps in Fig. 11 are reserved for future use. For
additional information regarding strapping options, refer to
Tables A and B.
Asynchronous operation of the RS-232 interface requires only
three lines: the transmit and the receive lines and signal
ground. Handshaking lines are also available.
Asynchronous operation of the RS-422 interface requires four
lines: transmit positive and negative polarity lines and receive
positive and negative polarity lines.
The printer port always operates in asychronous RS-232 mode
and requires no straps. Contact Dantel’s Field Service depart-
ment for more information about the following applications:
♦
Asynchronous RS-232 operation requiring handshaking
♦
Synchronous RS-232 or RS-422 operation
♦
Applications not shown in Figs. 10 and 11.
Straps X1 and X2 allow electrical disconnection of the backup
battery for storage or shipment. Set strap X1 for normal opera-
tion. Set strap X2 for shipment or storage. The GPP ships with
strap X2 set. Reset the strap to X1 during installation.
NOTE:
The on-board GPP battery is designed to retain the database
configuration during momentary power outages only. It is not
intended for long-term storage of databases and is not
rechargeable. The battery will begin to discharge when two
conditions are met: (1) The X1 strap is in, and (2) power has
been removed from the module. When the GPP is not in use,
place this strap in the X2 position.
INSTALLATION
