Epson ActionLaser 1600 EPL-5600 Service Manual page 24

General Description
1.3.1.2 Reverse Mode
The reverse mode for EPL-5600/ActionLaser 1600 supports the nibble mode of IEEE-P1284. This
printer can run in reverse mode, in which the printer can inform the computer of its status by EJL
and PJL commands.
Nibble mode of IEEE-P1284
System:
Connector type:
Applicable plug: 57-30360 (Amphenol or equivalent)
Signal description: See Table 1-9.
Table 1-9. Parallel Interface Pin Assignment
Pin No. Signal Name
STROBE
1
2-9 DATA 1-8
10
ACKNLG
11 BUSY
12 PE
13
14 AUTO-FEED
15 NC
16
CHASSIS GND
17
18 NC
19-30
31 INIT
32 ERROR
33
NC
.34
35 +5
36
1-12
IN
request values from the host computer during negotiation.
The signals are data bits of extension request values during
negotiation. This printer supports following values:
IN
0000 0100: Request Device ID (by nibble mode sending)
0000 0000: Request nibble mode
OUT
transfer to host computer.
transfer to host computer.
host computer.
HostBusy: This signal informs the printer of the host computer
state. When the signal is HIGH, the host computer cannot
IN
accept data.
Not
.
Logic ground level.
Connected to the printer chassis. The printer chassis GND
-
and the signal GND are connected to each other.
Not connected.
Ground level for the twisted pair return signal.
IN
transfer to host computer.
Same as for pins19 to 30.
.
Not
Pulled up to +5V through 1.0 Kohm resistance.
1284Active: If this signal is set to HIGH, this printer active
IN
Description
Rev. A