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Figure 8-24. Location of RS-485 chip,
U-7, on component side of expansion
Factory-Installed J8 Jumper
SW1
Supervisor Switch Wire Terminals
SW1
Figure 8-25. Supervisor Switch Wiring
J2
board
J1
SUPERVISOR SETUP SWITCH (OPTIONAL)
With the supervisor setup switch, a modified Setup mode can be accessed
without entering the case or breaking the legal weights and measures seal.
This mode allows access to all setup parameters, except those which are
J8
involved in legal-for-trade transactions (Grads, Display Divisions, etc.). The
supervisor setup switch must be unlocked with a key—normally carried by a
supervisor—which prevents tampering with important parameters by
unauthorized operators.
The wiring for the switch is connected to the two terminals on J8 (main
board) closest to the SW1 switch. The two terminals farthest from SW1 will
be jumpered at the factory as shown at left. Remove that existing jumper.
Connect the supervisor switch wires to the two terminals closest to SW1
J8
using appropriate connectors. The supervisor switch body can be mounted in
a hole drilled in the enclosure for that purpose, or can be mounted remotely.
AUX port RS-485 wiring
AUX Port
RS-485 (U7)*
J4-1
485-A
J4-2
485-B
J4-3
J4-4
J4-5
J4-6
*Integrated Chip U7 must be installed; U8 must NOT be installed.
J3
U8
U7
J4 (AUX PORT)
J5
J6
Optional features
8-25
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