Keithley 6512, Инструкция по эксплуатации

Страница: 141 / 156

B-1
B.1 Introduction
General bus commands are those commands such as DCL
(Device Clear) that have the same general meaning regard-
less of the instrument. General commands supported by the
Model 6512 are listed in Table B-1. Note that commands re-
quiring addressing assume that the Model 6512 primary ad-
dress is set to 27 (its default address).
B.2 REN (Remote Enable)
The remote enable command is sent to the Model 6512 by
the controller to set up the instrument for remote operation.
Generally, the instrument should be placed in the remote
mode before you attempt to program it over the bus. Simply
setting REN true will not actually place the instrument in the
remote mode. Instead the instrument must be addressed to
listen after setting REN true before it will go into remote.
* Indicates typical controller syntax required to send corresponding general bus commands. Hewlett-Packard BASIC syntax shown.
Table B-1
General bus commands
Command Description Effect on Model 6512
Typical controller
syntax*
REN
IFC
LLO
GTL
DCL
SDC
GET
SPE, SPD
Remote Enable
Interface Clear
Local Lockout
Go to Local
Device Clear
Selective Device Clear
Group Execute Trigger
Set REN false
Serial Polling Goes into remote when addressed.
Enters talker and listener idle states.
Front panel controls locked out.
Cancels remote.
Returns to default conditions.
Returns to default conditions.
Triggers reading in T2 and T3 modes.
Cancels LLO.
Requests status byte. REMOTE 727
ABORT 7
LOCAL LOCKOUT 7
LOCAL 727
CLEAR 7
CLEAR 727
TRIGGER 727
LOCAL 7
S=SPOLL (727)
B
General Bus Commands