Operation
GPIB Operation
34
Operating Manual for GPIB for XHR/XFR Series Power Supply
Table 3.1
IEEE-488.1 Interface Functions Implemented
Multiline
Control
Functions
The GPIB interface and the computer controller implement the Acceptor Handshake,
Source Handshake, Listener, and Talker functions. No user action is required. The
unit's ADR (Addressed) LED turns on when the power supply is addressed to listen
or talk.
Device Clear
The power supply will implement Device Clear regardless of whether it is in local or
remote control. Device Clear is typically used to send all or selected devices to a
known state with a single command. The power supply will be set to Initial (Power
On) Conditions after Device Clear.
Example:
Mnemonic Capability
Description
Multiline
Control
Functions
SH1
Source Handshake
Device must properly transfer a multiline message.
AH1
Acceptor Handshake
Device must properly receive remote multiline
messages.
T6
Talker
Device must be able to transmit.
L4
Listener
Device must receive commands and data.
Interface
Functions
DC1
Device Clear
Device can be initialized to a previously determined
state.
DT1
Device Trigger
A device function can be initiated by a talker on the
bus.
E1
Open Collector Drivers Describes the type of electrical drivers in a device.
PP1
Parallel Poll
Upon controller request, device must uniquely
identify itself if it requires service.
RL1
Remote/Local
Device must be able to operate from front panel and
via remote information from bus.
SR1
Service Request
Device can asynchronously request service from
controller.
SP1
Serial Poll
All talkers on the bus assume a serial poll mode.
Each device when addressed will provide an 8-bit
word of status information.
ibfind "devname"
Address the unit (devname or device name as
configured originally with ibconf)
ibclr
Low level command directed to entire bus, or
ibwrt"clr"
Device-dependent command directed to a
specific device.
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