– 110 –
APPENDIX
Pin No. Direction Compatibility Mode Nibble Mode
Signal Name Signal Name
31 In nInit nInit
32 Out nFault nDataAvail/Data0,4
33 EXT GND —
34 Out Compulsion Status —
35 Out Logic High —
36 In nSelectIn 1284Active
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 communication 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 settings 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 Programmer’s 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 Programmer’s Manual.
Parallel interface connector (printer side)
This connector mates with an
Amphenol 57-30360 connector
(18) (1)
(36) (19)