Remote Operation
5-22
975-0200-01-01
Where:
<address> is the multichannel address of the device to be selected. The
address is an integer value from 1 to 30.
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 5–15.
All SCPI commands in the 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
Condition
Response
Example
No multichannel
address used
Only the device selected
using the
*adr
or
:SYST[<address>]
:COMM[:MCH]:ADDR
commands will respond.
SYSTem:VERSion?
Single multichannel
address specified
The device addressed in
the command will respond
regardless of if its has been
selected.
SYSTem2:VERSion?
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?
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