OKI ML3390 01091308*01256402 User Manual
Product codes
01091308*01256402
D-7
Appendix D: Interface Data
Circuits
Ausgang
Eingang
p
- 3 v
+ 3 v
+ 15 V
- 15 V
Empfänger
Eingang
300 ns
300 ns
Input circuit
Ausgang
Eingang
Entspricht SN 75188
Sender
Ausgangsschaltung
+ 9 V
- 9 V
+ 3 V
- 3 V
Ausgang
300 ns
300 ns
Output circuit
MARK Polarity:
-3 to -15V:
LOW = OFF = Logical “1”
SPACE Polarity:
+3 to +15V: HIGH = ON = Logical “0”
Ready/Busy
protocol
protocol
X-ON/X-OFF
protocol
protocol
With this protocol, the printer uses the voltage level on line RTS (4),
SSD (11) or DTR (20) to inform the computer whether it is ready to
receive data or whether its buffer is full. You can set the Busy line to
one of above mentioned lines by selecting Busy Line. When the printer
is ready to receive data, the Busy-line DTR or RTS is set to high-level
(Space). If you select Busy Line to SSD-, line SSD is also set to high-
level (Space) when the printer is ready to receive data. If you select
SSD+
SSD (11) or DTR (20) to inform the computer whether it is ready to
receive data or whether its buffer is full. You can set the Busy line to
one of above mentioned lines by selecting Busy Line. When the printer
is ready to receive data, the Busy-line DTR or RTS is set to high-level
(Space). If you select Busy Line to SSD-, line SSD is also set to high-
level (Space) when the printer is ready to receive data. If you select
SSD+
, the line is set to low-level (Mark).
With this protocol the printer uses the line Transmit Data TD (2) and
the command X-ON (DC1) to inform the computer that it is ready to
receive data. The command X-OFF (DC3) is used to inform the compu-
ter that the printer buffer is full.
the command X-ON (DC1) to inform the computer that it is ready to
receive data. The command X-OFF (DC3) is used to inform the compu-
ter that the printer buffer is full.
Equivalent to SN 75 154
Equivalent to SN 75 188
Input
Output
Output
Signal levels
Input
Input
Output
Receiver
Transmitter