Oce 3121 Technical & Service Manual page 666

The Multitray's IPC communication offers a new IPC communication mode in
addition to the existing IPC communication method. IPC communication 2
provides a higher (double) communication speed than the existing communi-
cation mode.
The required communication mode can be selected on the DIP switch (SW3)
on the tray control PBA.
Mode
IPC communication
IPC communication 2
micro-proc-
micro-proc-
Microprocessor
essor (Q7)
essor (Q7)
(Q7)
tray controller PBA
516 TSM Océ 3121
DIP switch settings
Factory default
communi-
Communication
cation IC
IC
(Q11)
Tray controller PCB
sorter
(Multitray)
ON
1 2 3 4
ON
1 2 3 4
communi-
Communication
cation IC
Functional description of the sorter
micro-proc-
Microprocessor
essor
IC
DC controller PBA
DC controller PCB
copier
(copier)