Chapter 3
I/O Information
©
National Instruments Corporation
3-7
Table 3-5.
Parallel Port Connector Signals
Pin
Default Configuration (LPT)
Floppy Configuration
1
Signal Name
Signal Description
Signal Name
Signal Description
1
BUSY*
Device Busy
MTR1*
Motor on Disk 1
2
SLCTIN*
Select Input
Step*
Step Pulse
3
ACK*
Acknowledge
DS1*
Drive Select 1
4
FAULT*
Fault
WDATA*
Write Disk Data
5
ERROR
Error
HDSEL*
Head Select
6
PD0
Data Bit 0
Index*
Index Pulse Input
7
PD1
Data Bit 1
TRK0*
Track 0
8
PD 2
Data Bit 2
WRTPRT*
Write Protected
9
PD3
Data Bit 3
RDATA*
Read Disk Data
10
PD4
Data Bit 4
DSKCHG*
Disk Change
11
PD5
Data Bit 5
Not Used
—
12
PD6
Data Bit 6
MTR0*
Motor on Disk 0
13
PD7
Data Bit 7
Not Used
—
14
INIT*
Initialize Printer
DIR*
Step Direction
15
STROBE*
Strobe
DS0*
Drive Select 0
16
SLCT
Select
WGATE*
Write Gate
17
AUTOFD
Auto Line Feed
DRVDEN0*
Density Select
18
+5V
+5 V
+5V
+5 V
19–35
GND
Ground
GND
Ground
36
NC
Not Connected
NC
Not Connected
1
Refer to the
section of Chapter 2,
Installation and Configuration
.
