Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 312)

III. COMMAND REFERENCES - 15. Command References 15A. Driver488/DRV Commands
Personal488 User’s Manual, Rev. 3.0 III-297
LIGHT PEN
SYNTAX LIGHT PEN [ON|OFF]
RESPONSE None
MODE Any
BUS STATES None
SEE ALSO ARM, DISARM; OnEvent (Sub-Chapter 15B)
EXAMPLES PRINT#1, “LIGHT PEN ON”
The LIGHT PEN command enables or disables the detection of interrupts via setting the light pen
status. The default is light pen interrupt enabled.
LOCAL
System Controller Mode
SYNTAX LOCAL
RESPONSE None
MODE SC
BUS STATES *REN
SEE ALSO REMOTE, AUTO REMOTE
EXAMPLE PRINT#1,"LOCAL" Unassert the Remote Enable Line
Active Controller Mode
SYNTAX LOCAL addr[,addr...]
addr is a bus device address (primary with optional secondary) or a device name.
RESPONSE None
MODE CA
BUS STATES ATNUNL, MTA, LAG,GTL
SEE ALSO REMOTE, AUTO REMOTE
EXAMPLE PRINT#1,"LOCAL 12,16" Send Go To Local to devices 12 and 16.
In the System Controller mode, the LOCAL command without optional addresses causes Driver488 to
unassert the Remote Enable ( REN ) line. This causes devices on the bus to return to manual operation.
As the Active Controller, with bus addresses specified, bus devices are placed in the local mode by the
Go To Local (
GTL ) bus command. If addresses are specified, then the Remote Enable line is not
unasserted.
LOCAL LOCKOUT or LOL
SYNTAX LOCAL LOCKOUT or LOL
RESPONSE None
MODE CA
BUS STATES ATN
•LLO
SEE ALSO LOCAL, LOCAL LIST, REMOTE
EXAMPLES PRINT#1,"LOCAL LOCKOUT" Send Local Lockout bus command.
PRINT#1,"LOL" Same as above.
The LOCAL LOCKOUT command causes Driver488 to issue a Local Lockout ( LOL ) IEEE 488 bus
command. Bus devices that support this command are thereby inhibited from being controlled
manually from their front panels.