AMETEK XG Family Programmable DC - Manual (Page 159)

Remote Operation
M370430-01 Rev E 5-27
5
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 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 5-9.
Table 5-9 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 it 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?
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?