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5100
Series
"locked out"
by
a
remote
command
it
can
return the
instrument
to
local
operation by toggling the
REMOTE
switch
on
the front
panel.
2-125.
Programming
instructions
may
be
either
initia-
tion or string
commands. The
initiation
commands
are
one
or
two
character
messages
that
are
operated
on
as
soon
as
they
arrive unless
they are part of
a
string,
in
which
case they are
executed
in
sequence
within the
string.
The
only exception
is
reset,
which
has
an
imme-
diate response. String
commands
can be Control
Com-
mands,
Storage
Commands
(used
with
the
5101
A
only),
Data
Instructions,
Status requests or a
combination
of
the
first
three,
and
are sent
in
a
series
of
one
to thirty-two
characters
that
are,
with
the
exceptions noted
in
the
text,
concluded
with a terminator character.
Table
2-14.
Programming Codes
Code
Explanation
Code
Explanation
INITIATION
CHARACTERS
STORAGE
COMMANDS
(Storage
Only)
*
Reset
-
go
to
focal
Q1
Enable Storage
Mode
C
Clear
Entry
Q0
Disable Storage
Mode
cc
Reset
—
stay
in
remote
[1
Enable
Tape
Mode
LC
Clear
entry
limits
[0
Disable
Tape
Mode
TC
Clear tolerance
limits
W1
Select Store
Mode
10-3
interface
interrupt
Enable Codes
wo
Select
Read
Mode
YO-7
Interface
Output
Enable Codes
&
Advance/Load
Termination Character
(
Select/Display
Step
}
Delete Step
CONTROL
COMMANDS
K
List
=
Clear Storage
J
Go
to
Remote
-
RS232
#
Go
to
local
—
RS232
DATA
INSTRUCTIONS
U1
Enable Local
Lockout
uo
Disable Local
Lockout
+
-
Polarity
entry
s
Go
to
Standby
0-9
Magnitude
entry
N
Go
to
Operate
Decimal
point
XI
*
Select
external sensing
/
Fractional
scale
entry
XO
* Select interna!
sensing
E
Exponent
entry follows
FI
*
Enable
external
oscillator
mode
V
*
Volts entry
F0
*
Disable external
oscillator
mode
A
*
Amps
entry
R1
*
Select
50
ohm
divider override
Z
*
Ohms
entry
R0
* Disable
50
ohm
divider override
H
*
Hertz entry
Error
Mode
toggle
D
*
dBm
entry
<
Error
Mode
Cursor
one
position
left
%
Percentage entry
>
Error
Mode
Cursor one
position right
;
Increment
digit
under
cursor
STATUS
Decrement
digit
under
cursor
$
or
'
Store
NEW
REF/CAL
1
ohm
reference
Dor"?
Print Status
message
G
Recall
(TNR)
?
Print Central
Display
L
Enable Entry Limit entry
T
Enable Tolerance Limit
entry
PI
*
Enable
Wideband
option
P0
*
Disable
Wideband
option
'Terminator
required
for
action
Interface
Option
(-06),
described
in
Sections
605
and 606
respectively,
of the Instruction
Manual.
Communication
between
the controlling
device
and
the
instrument
inter-
face
must
be
in
the
standard
ASCII
codes.
The
codes
accepted by
the
instrument
and
a
brief
explanation of
each
is
given
in
Table
2-14.
2-124.
When
one
of the optional
interface
modules
is
installed
in
the
instrument
the
Remote
Mode
can be
activated
either
manually
or
from
the
Control
Device.
The
instrument can be placed
in
remote through
the
IEEE
interface
by addressing
it
with
the address
assigned
to
the instrument.
Remote
can be accomplished through
the Bit
Serial interface
by programming
the character
"J"
as described
in
later
paragraphs.
The
instrument
is
put
in
remote from
the front
panel by
toggling the
RE-
MOTE
switch.
Unless
the front panel
is
disabled or
2-27
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