TM 5-6675-323-14
Table 3-2.
SIGNAL LINES BETWEEN PLOTTER AND INTERFACE
Signal Direction
INTFC)
(CMPTR
Function
Description
Line
DATA LINES
Carries I/O data, program
DIO1-8
Data Input/Output
c o d e s , addresses and
status.
CONTROL LINES
I n d i c a t e s data or address
ATN
Attention
transmission.
Indicates
service
request.
SRQ
S e r v i c e Request
(Low = R e q u e s t )
D i s a b l e s HP-IB Interface for
IFC
Interface Clear
bus .
( Low = C l e a r )
Identifies end of data.
E01
End or Identify
(Low = End)
REN
Enables remote control
Remote Enable
operation of plotter.
TRANSFER LINES
Indicates readiness to
NRFD
Not Ready for Data
( Low = Not Ready)
accept information.
Indicates receipt
of
N o t , Data Accepted
NDAC
information.
( Low = Not Ready)
DAC
Data Valid (Accepted) Indicates information
validity.
( Low = D a t a V a l i d )
3-9
