F.W. Bell 7030, Instruction Manual

Page: 80 / 126

F.W. BELL Model 7030 Gauss/Tesla Meter Instruction Manual
7-6 Section 7 – Remote Operation
IEEE-488
GENERAL BUS
COMMANDS General bus commands have the same meaning to any instrument on the
IEEE-488 bus. Often the user will be using an IEEE-488 controller card,
such as a National Instruments PCI-GPIB. Along with the card a software
package is supplied, commonly called a Universal Language Driver (ULD)
or a Universal Language Interface (ULI). This software translates the
complicated lower level operations into easy-to-use commands.
The following commands assume the instrument’s address has been set to
15:
Table 7-2 General Command Summary for IEEE-488
COMMAND ULI STATEMENT BRIEF DESCRIPTION
REN REMOTE 15 Enter remote mode, disable front panel controls.
IFC ABORT Clears the interface and remote mode.
LLO LOCAL LOCKOUT Disable front panel controls.
GTL LOCAL 15 Cancel remote mode, restore front panel controls.
DCL CLEAR
Cancels all commands, clears all queues, affects all
instruments on the bus.
SDC CLEAR 15 Same as DCL, except only for this instrument.
SPE, SPD SPOLL 15 Read the serial poll byte.
REN – Remote Enable
This command prepares the instrument for remote operations. All
front panel controls are disabled except for the power switch.
IFC – Interface Clear
This command cancels the remote mode and places the bus in an
idle state.
LLO – Local Lockout
All front panel controls are disabled except for the power switch.
GTL - GO TO LOCAL
This command cancels remote mode and restores front panel
operation.