Remote Operation
M370430-01 Rev B 5-27
Multichannel Commands Explained
The use of multichannel addressing allows you to send messages to
one device, more than one device or to all devices. Any of the
remote interface types can be used to send a multichannel
command through the device that is physically connected to the PC
to all the devices, provided that all other devices are connected to
via the RS-485 bus. In order to use multichannel addressing, the
setup of the wiring should be completed as described in “Multiple
Power Supply Connections to RS-485 Bus” on page 5-19.
All SCPI commands in the XG/XTR support the use of multichannel
addressing; however, only one device can respond to a message.
Responses will be sent according to the conditions set out in Table 5-8.
Table 5-8 Rules for Multichannel Responses
No multichannel
address used
Only the device selected
using the *adr or
:SYST[<address>]
:COMM[:MCH]:ADDR
commands will respond.
Single multichannel
address specified
The device addressed in the
command will respond
regardless of if it has been
selected.
ALL or broadcast
multichannel
address specified
Only the device selected
using the *adr
or :SYST[<channel>]:C
OMM[:MCH]:ADDR
commands will respond. If
none of the devices have
been selected then no
response will be seen.
:SYSTem
ALL:VERSion?
or
:SYSTem0:VERSion?
Multiple
multichannel
addresses specified
Only the device selected
using the *adr or
:SYST[<address>]
:COMM[:MCH]:ADDR
commands will respond. If
none of the device have
been selected then no
response will be seen.
SYSTem
1,2,4,5,6:VERSion?
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