Command
Syntax
Description
R
Data Ready
Rn
Define mode
n
of digital input port data to be latched, where
n = 0
,
1
, or
2
.
R0
(Default) Define data to be not latched, and to be read whenever
the Digital488/80A is addressd.
R1
Define data to be latched on an EDR transition.
R2
Define data to be latched and buffered on an EDR transition.
R?
Returns current Data Ready mode
n
.
Note:
EDR cannot be used to capture data in the
F5
high-speed
binary format.
S
Save Configuration
Sval
Save current configuration as configuration
val
, where
val =
value from
0
to
100
.
S?
Returns the last saved configuration
val
(not the currently
loaded configuration).
T
Test
Tn
Define mode
n
to test Digital488/80A communication, where
n = 0
or
1
.
T0
Turn off the TEST LED indicator on Digital488/80A front panel.
T1
Turn on the TEST LED indicator on Digital488/80A front panel.
U
User Status
Uval
Define status message
val
to send when the Digital488/80A is
next addressed to Talk, where
val = 0
or
bit
, and where
bit =
bit value from
1
to
40
.
U0
Send status of Digital488/80A unit.
Ubit
Send status of
bit
, where
bit =
bit value from
1
to
40
.
Note:
After the
U0
status string is read by the controller, any error
conditions are cleared
V
View Configuration
Vval
View (but not load) configuration
val
, where
val =
value
from
0
to
100
.
V?
View Version
V?
View the current firmware revision level of the ROM.
Note:
This
V?
command is not related to the above View
Configuration (
V
) command.
X
Execute
X
Execute the command string.
Y
Bus Terminator
Yn
Define mode
n
of IEEE 488 bus terminator, where
n = 0
,
1
,
2
, or
3
.
Y0
(Default) Define carriage-return line-feed (
CR LF
).
Y1
Define line-feed carriage-return (
LF CR
).
Y2
Define carriage return (
CR
) only.
Y3
Define line feed (
LF
) only.
Y?
Returns current bus terminator mode
n
.
Note:
To save a bus terminator as the new default setting, use the
Save Configuration (
S
) command
S0
.
?
Query
?
(Command Support) Returns present configuration or mode of
the command preceding the
?
.
Note:
One exception to this command description is the View Version
(
V?
) command which is not related to the View Configuration
(
V
) command.
Command Reference
Like the command summary, the following detailed command reference presents all 23 of the
Digital488/80A commands in alphabetical order according to their command syntax. Support for these 23
commands, including the
Query
(
?
) command extension, and the use of the
Serial Poll Status Byte
, is also
presented. All examples are given using GW-BASIC or BASICA.
46 Digital488/80A Commands
967695
Digital488/80A User's Manual
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