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Chapter 2 - Specifications
2.3.4 RS-232C Interface (COM1/COM2/COM3)
D-sub 9 pin (Male)
Screw Size: (4-40): Inch Type
The GND terminal is the signal ground. Be sure to connect it with the
cable's opposite side SG terminal.
2.3.5 Printer Interface (LPT1)
D-sub 25 Pin (Female)
13 12 11 10 9
25 24 23 22 21 20 19 18 17 16 15 14
Screw Size: (4-40): Inch Type
Pin
SPP/ECP Mode
No.
Signal Name
1
STRB
2
DATA0
3
DATA1
4
DATA2
5
DATA3
6
DATA4
7
DATA5
8
DATA6
9
DATA7
10
ACKNLG
11
BUSY
12
PE
13
SLCT
Pins 1, 4, 16 and 17 will become O.D when the SPP mode specification is used. If the
mode changes to ECP or EPP, these pins will become T.S
PL B900/B910 Series Users Manual
1
2
3
4
5
6
7
8
9
8
7
6
5
4
3
2
1
EPP Mode
Direction
Signal Name
In/Output O.D/T.S 14
WRITE
In/Output
DATA0
In/Output
DATA1
DATA2
In/Output
In/Output
DATA3
DATA4
In/Output
In/Output
DATA5
DATA6
In/Output
In/Output
DATA7
ACKNLG
Input
WAIT
Input
PE
Input
SLCT
Input
Pin No.
Signal Name
CD
1
RXD
2
TXD
3
DTR
4
GND
5
Electrical
Pin
SPP/ECP Mode
Specif.
No.
Signal Name
AUTOFD
T.S
15
ERROR
T.S
16
INIT
T.S
17
SLCTIN
T.S
18
GND
T.S
19
GND
T.S
20
GND
T.S
21
GND
T.S
22
GND
TTL
23
GND
TTL
24
GND
TTL
25
GND
TTL
Pin No.
Signal Name
DSR
6
RTS
7
CTS
8
RI
9
EPP Mode
Electrical
Direction
Signal Name
Specif.
In/Output O.D/T.S
DSTRB
ERROR
Input
TTL
In/Output O.D/T.S
INIT
ADSTRB
In/Output O.D/T.S
GND
GND
GND
GND
GND
GND
GND
GND
2-6
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