Ingersoll-Rand SCHLAGE HP-3000, Руководство пользователя

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Appendix C - Old Board Configuration
92
End of Line
Termination Termination helps to ensure clean data signals are transmitted through the
network wiring. Termination is applied to the end-of-line (EOL) HandPunch
in the network daisy-chain. The factory default setting is for EOL termination
to be disabled – switches 1 and 2 OFF. Refer to “Figure 13-15” on page 91 for
switch ON/OFF positioning.
• To enable EOL termination at a HandPunch, both switches 1 and 2 must
be ON.
• To disable EOL termination at a HandPunch, both switches 1 and 2 must
be OFF.
EOL Termination must be
enabled
for:
• A single HandPunch terminal installation.
• In a HandPunch Direct-Connect network – the last HandPunch in the
daisy-chain (the one farthest from the host computer).
• In a Modem/HandPunch to PC network the HandPunch terminal with the
Ethernet option (for communication with the host computer) in the daisy-
chain.
EOL Termination must be
disabled
for:
• All HandPunches in the network not identified in teh previous section.
• In an Ethernet/HandPunch to PC network the HandPunch terminal with
the Ethernet option (for communication with the host computer) in the
daisy-chain.
Communication Method
The communication method dip switch is set ON for factory testing purposes.
The factory default setting and for standard operation, switch 3 must be OFF.
• Switch 3 must always be OFF.
Erasing HandPunch Memory
The erase memory function can perform either or both of the following:
• Erase a HandPunch’s configuration data.
• Erase a HandPunch’s user database, transaction buffer, and menus (and
messages on the HandPunch 4000).
The factory default setting (and normal operation setting) is set for switches 4
and 5 to be OFF, retaining memory.
If the HandPunch is equipped with the battery backup option, remove shunt
J7 in front of the DIP switch array (see “Figure 13-3” on page 78) before
proceeding. Replace shunt J7 after completion of the following steps.
NOTE