Table of Contents
Advertisement
Processor PCB
Table 2-7 Parallel Printer Interface Signals
SIGNAL
SOURCE
DESCRIPTION
RMS
APC
Receive Machine Set.
This signal is used
with the ODA printer
interface only.
BUSY
Printer
Goes high to indicate
that the printer can-
not receive data:
1. During data entry
2. During printing
operation
3. In offline state
4. During printer
error status.
STROBE
APC
Strobe pulse to read
data in. The signal
level is normally
High. Read-in of data
is performed at the
Low level of this
signal.
SG
Twisted-pair return
signal ground level.
SELECT
Printer
Goes high to indicate
that the printer is in
selected state.
ACKNLG
Printer
Acknowledge goes
Low to indicate that
data has been
received and that the
printer is ready to
accept other data.
2-33
Advertisement
Table of Contents
