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Pin No.
Direction
33
34
Out
35
Out
36
In
Note: 1. The prefix "n" on the signal name refers to low active signals.
If the host does not have any one of the signal lines listed above, two-way com-
munication fails.
2. For interfacing, signal lines should always use twisted pair cables with the return
sides connected to the signal ground level.
3. Cautions when resetting the printer using the nInit signal (#31 pin).
Reset can be made from #31 pin (nInit signal) of the interface by memory switch
setting. (Factory setting is reset.)
In addition, when reset has been enabled by #31 pin (nInit signal), it can be set to
reset when the following conditions have been established: memory switch set-
tings for 6-D and 6-E have been changed, #36 pin (nSelectIn/1284 active signal)
is low, and #31 pin (nInit signal) is low.
For instructions on setting the memory switch, please refer to the separate Speci-
fication Manual.
4. During factory output, IFEE 1284 printer device ID reply will be "Invalid." To get
the device ID, change memory switch 6-C to "Valid." For instructions on setting
the memory switch, please refer to the separate Specification Manual.
(18)
Parallel interface connector (printer side)
(36)
Compatibility Mode
Signal Name
EXT GND
Compulsion Status
Logic High (+5V)
nSelectIn
(1)
This connector mates with an Amphenol
57-30360 connector
(19)
– 49 –
Nibble Mode
Signal Name
—
—
—
1284Active
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