R&S SMC100A Switchover to Remote Control
1411.4060.32 5.3 E-1
Remote Control via IEC/IEEE Bus
To be able to control the instrument via the IEC/IEEE bus, instrument and controller must be linked by
an IEC/IEEE-bus cable. An IEC/IEEE-bus card, the card drivers and the program libraries for the
p
rogramming language used must be provided in the controller. The controller must address the
instrument with the set IEC/IEEE-bus address. The IEC/IEEE bus address of the instrument is factory-
set to 28. It can be changed manually in the Environment - GPIB menu or via IEC/IEEE bus with
command SYSTem:COMMunicate:GPIB: ADDRess . Addresses 0 to 30 are permissible.
Manually: Setup - Remote - GPIB ...
Via IEC/IEEE bus:
CALL IBFIND("DEV1", generator%)
'Open port to the instrument
CALL IBPAD(generator%, 28)
'Inform controller about old address
CALL IBWRT(generator%, "SYST:COMM:GPIB:ADDR 18")
'Set instrument to new address
CALL IBPAD(generator%, 18)
'Inform controller about new address
Sending the first command starts remote control operation.
Return to manual operation is possible via the front panel or the IEC/IEEE bus.
Manually: Press the
LOCAL key.
Notes:
Before the transition, command processing must be completed as
otherwise transition to remote control is performed immediately.
The
LOCAL key can be disabled by the interface message &LLO (see
Section "IEC/IEEE Bus Messages") in order to prevent unintentional
transition. In this case, transition to manual mode is only possible via the
IEC/IEEE bus.
The
LOCAL key can be enabled again by deactivating the REN line of
the IEC/IEEE bus ( (see Section "IEC/IEEE Bus Messages").
Via IEC/IEEE bus:
...
CALL IBLOC(generator%)
'Set instrument to manual operation
...
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