Menu mode > 52
Parallel 
I/F
I-prime Select whether to print 
or clear buffer contents 
upon initialisation by 
receiving I-PRIME.
Invalid
Buffer Print
Buffer Clear
Auto Feed XT 
(Displayed only for 
EPSON emulation)
If your system uses pin 
14 of the parallel 
interface to control 
automatic line feed, 
change the setting to 
Valid.
Valid
Invalid
Bi-direction Set whether to return a 
device ID or not in 
accordance with 
IEEE1284.
Enable
Disable
Serial I/F 
(Displ-
ayed 
when 
connec-
ted to 
Serial 
Interface)
Parity None: Absence of parity 
bit
Odd: Odd parity
Even: Even parity
Ignore: Do not convert 
the character to ox40 in 
case of parity error.
None
Odd
Even
Ignore
Serial Data 7/8 
Bits
Select Serial bit. 8 bit
7 bit
Protocol Select an I/F Busy 
control method.
Ready/Busy
X-On/X-OFF
Ready/Busy & X-ON/X-OFF
Diagnostic Test Select to perform input/
output diagnosis of
RS-232C interface 
signals.
No
Yes
Busy Line Select to set the Busy 
Line.
SSD-
SSD+
DTR
RTS
Baud Rate Select to set the Baud 
Rate.
9,600 bps
4,800 bps
2,400 bps
1,200 bps
600 bps
300 bps
19,200 bps
DSR Signal Select the DSR Signal. Valid
Invalid
DTR Signal Select a method to 
switch a DTR signal of a 
serial interface.
Ready on Power Up
Ready on Select
Busy Time Select the minimum 
time between BUSY to 
READY.
0.2 sec
1.0 sec
GROUP ITEM  FUNCTION  SETS
ML5520ECO/
ML5521ECO
ML5590ECO/
ML5591ECO