Ceyear 1465 Series, Programming Manual

Page: 33 / 143

2 Remote Control
2.1 Remote control basis
26
Event Power On/Off
(Power-on status
cleared)
DCL, SDC
(Instrument
cleared,
selected
instrument
cleared) *RST or
SYSTem:
PRESet STATus:
PRESet *CLS
0 1
Clear the
enable part in
the operation
and
inquiry
registers.
Filling 1 in the
enable part of
other
registers.
—
Yes
— —
Yes
—
The positive
transfer part is
filled with 1.
Clear
the
negative
transfer part.
—
Yes
— —
Yes
—
Clearing the
error queue
Yes Yes
— — —
Yes
Clearing the
output buffer
area
Yes Yes Yes
— — —
Clearing the
command
processing
and
input
buffer area
Yes Yes Yes
— — —
2.1.6 Programming considerations
1) Please initialize the instrument status before changing the settings
When setting the instrument through remote control, it is necessary to initialize the instrument status (e.g.
send ―*RST‖) and then set the desired status.
2) Command sequence
In general, the set and query commands should be sent separately; otherwise the returned value of the
query command will change according to the current instrument operation sequence.
3) Failure response
The service request can only be initiated by the instrument itself. The controller program in the test
system should instruct the instrument to initiate a service request when an error occurs, and then enter
the corresponding interrupt service routine for processing.
4) Error queue
Each time the controller program processes a service request, the error queue rather than the status
register of the instrument should be queried to obtain a more accurate error reason. The error queue
should be frequently queried to obtain the wrong command sent by the controller to the instrument
especially during testing of the controller program.
Function