Series 2268 850 Watt DC Power Supplies Reference Manual
Remote Operation
2268S-901-01 Rev. A / January 2015
123
Multichannel Address Setting
Important:
Always start communication with the Series 2268 by sending the
*ADR <address> command to select the unit you want to talk to. If you do not
do this, the instrument may not respond to commands. This applies to all remote
interfaces.
You must set the address even if you are using only one Series 2268 instrument.
Multichannel addressing is always used, so commands must be sent with a
proper multichannel address.
The power supply multichannel address can be set to any address from 1 to 30. All units that
are connected together via the RS-232 or RS-485 connector must have a unique multichannel
address.
To set the address:
1.
Select the appropriate communication port as described in “Selecting the
Appropriate Communication Port” on page 122.
If more than one unit has the same multichannel address when connected through the
RS-485 connector, then collisions are possible, resulting in garbled responses to queries.
2.
Press the rotary Adjust/Enter control.
is displayed on the output voltage display.
3.
Turn the rotary Adjust/Enter control to select the desired multichannel address
from 1 to 30.
4.
Press the rotary Adjust/Enter control to commit the new address.
Remote Interface Addressing
All commands must be issued with a multichannel address or the device must be selected
using the:
*adr or :SYST[<channel>]:COMM[:MCH]:ADDR commands.
Once a device is selected all commands sent without a multichannel address will be handled
by the selected device. The use of multichannel addresses supersedes the selected device as
the destination for a message.
To change the selected device simply issue the
*adr
or
:SYST [<channel>] :COMM[:MCH] :
ADDR
command with a different multichannel address. The previously selected device will be
deselected and the new device will be selected. From that point on, all messages without a
multichannel address will be destined for the newly selected device. It is possible to deselect
all devices by using the aforementioned commands with the broadcast address, 0.
The SCPI Commands for these instructions are:
[:]SYSTem:COMMunicate[:MCHannel]:ADDRess <address>
or
*ADR <address>
Where:
<address> is the multichannel address of the device to be selected. The address is an integer
value from 1 to 30.
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