HP 54501A - Page 80

Parallel
Poll
Enable
Command.
The
parallel
poll
enable
secondary
command
(PPE)
configures
the devices
which
have
received
the
PPC
command
to
respond
to
a
parallel poll
on
a particular
HP-IB
DIO
line
with
a
particular
level.
Parallel
Poll
Disable
Command.
The
Parallel
Poll
disable
secondary
command
(PPD)
disables
the
devices which
have
received
the
PPC
command
from
responding
to
parallel
poll.
Table
3-4.
Parallel
Poll
Commands
Command
Parallel
Poll
Unconfigure
(Multiline
Command)
Parallel
Poll
Configure
(Secondary
Command)
Parallel
Poll
Enable
(Secondary
Command)
Parallel
Poll
Disable
(Secondary
Command)
Mnemonic
PPU
PPC
PPE
PPD
Decimal
Code
21
05
96-111
112
ASCII/ISO
Character
NAK
ENQ
1-0
P
Message
Communication
and System
Functions
3-38
HP
54501A
Programming