General Bus Commands; Ren (Remote Enable); Ifc (Interface Clear); General Bus Commands And Associated Basic Statements - Keithley 595 Instruction Manual

IEEE-k88 QUOGUAW.ttNG
When END LINE is pressed the second time the insti-
To place the Model 595 in remote, the controller must~per-
ment will display the "waiting for trig&' message. Send
the following GET command to tiger a reading tid cancel
form the following sequence:
the message:
1. Set the RE& iiie true.
TRIGGER 725
2. Address the instrument to listen.
The display will be blank for the period of the measure-
ment conversion.
HP-85 Programming Example-This sequence is automat-
ically performed by the HP-85 wheh the following is typed
in at the keyboard.
4.8. GENERAL BUS COMMANDS
REPlUTE -X38
Gen&d bus commands are those commands such as DCL
that have the same general meaning regardless of the in-
After the END LINE k&y is pressed, the instrument will
stnunent type. Commands supported by the Model 595 are
be in remote, as indicated by the REMOTE ar Id LISTEN
listed in Table 4-5, which also lists HP-85 statements
lights. If not, check to see that~ the instrument is set to the
necessary to send each command. Note that commands
proper primary address (28), and that the bus connections
requiring that a primary address be specified assume that are properly nude.
the Model 595 mimarv address is set to 28 (its default
address). *
4.8.2 IFC (Interface Clear)
4.8.1 REN (Remote Enable)
The IFC command is sent by the controller to~place the
Model 595 in the local, talker and listener idle states. The
The remote enable command is sent to the Model 595 by
unit will respond to the IFC command by cancelling front
the controller to set up the instrument for remote opera-
panel TALK or LISTEN 3ights if the instrument was
tion. Gen&~llv. the instrument should be ulaced in remote
previously placed in one of those states.
before progra&ning it over the bus. Sim'ply setting REN
tzue wiIl not actually place the instrument in remote. The
instnunent must be addressed after setting REN true before
To send the IFC command, the controller need only set the
it will go into remote.
IFC line true for a minimum of ~lOO*ec.~
Table 4-5. General Bus Commands and Associated BASIC Statements
HP-85
Command Statement
I
Affect On Model 595
I
REN
REMOTE 7
IFC
CIE;ORTIO 7
LLO
LOCAL LUCKOUT 7
GTL
LCICAL 723
DCL CLERR 7
SDC
CLEfiF: 728
GET
TEIGII;EP, 723
LOCl?L 7
Goes into remote when next addressed
Goes intd talker and listener idle states
Fronts panel controls locked out
Cancel remote
Returns to default conditions
Returns to default conditions
Triggers reading in T2 and l3
Cancel LLO
4-8