Printronix P7000 H-Series Cartridge Ribbon Printer User Manual
Page 119
Signals
119
NOTE:
The length of the data cable from the host computer to the printer
should not exceed 32 feet (10 meters).
Host Clock / nWrite.
Driven by host. Data transferred from host to printer.
When printer sends data, two types are available. If Nibble mode, signal is set
high. If Byte mode, signal is set low.
Data 1 through Data 8.
These pins are host-driven in Compatibility mode and
bidirectional in Byte mode. They are not used in Nibble mode. Data 1 is the
least significant bit; Data 8 is the most significant bit.
14
Host
nAutoFd
Host Busy
HostAck
15
Not Defined
16
Logic Grid
17
Chassis Grid
18
Printer
Peripheral Logic High
19
Signal Ground (nStrobe)
20
Signal Ground (Data 1)
21
Signal Ground (Data 2)
22
Signal Ground (Data 3)
23
Signal Ground (Data 4)
24
Signal Ground (Data 5)
25
Signal Ground (Data 6)
26
Signal Ground (Data 7)
27
Signal Ground (Data 8)
28
Signal Ground (PError, Select, nAck)
29
Signal Ground (Busy, nFault)
30
Signal Ground (nAutoFd, nSelectIn, nInit)
31
Host
nInit
32
Printer
NFault
nDataAvail
aDataAvail
33
Not Defined
34
Not Defined
35
Not Defined
36
Host
nSelectIn
1284 Active
1284 Active
Table 6. 1284 Signals (continued)
Pin
Source of Data
Type of Mode
Compatible
Nibble
Byte