Lexmark 3455 - Manual (Page 126)

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8.6 Using the Twinax Interface with IPDS
When twinax attached, the Adapter for SCS will, by default, NOT use the IPDS
emulation if it is installed in the printer. The Adapter for SCS must be configured to
use the installed SIMM for IPDS before it connects to the host.
8.7 Dual Addresses with the Twinax Interface
When installing a SIMM for IPDS and Coax/Twinax adapter into an Optra printer, it is
possible to use both the IPDS emulation and the SCS emulation simultaneously. To use
both emulations, supply the IPDS emulation and the SCS emulation with two different
twinax addresses.
In the operator panels shown here, address 0 is for the SCS emulation and address 2 is
for the IPDS emulation. See the next few pages for instructions on how to change the
addresses.
Note: If the IPDS emulation and the SCS emulation are given the same address,
the SCS emulation is used and the IPDS emulation is ignored. The word
DUPLICATE is displayed in the operator panel.