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Multichannel Operation
TM-XDOP-01XN 4–15
Multichannel Commands
To send a command to a multichannel power supply, attach the channel address to
the command. If no channel number is specified, the command will be executed
by the directly connected power supply.
For example, the command:
SOURCE12:VOLT 10.0
will set the power supply with address 12 to 10V output. The master receives the
command and puts in on the CANbus.
Appendix C in your manual lists all commands. [<channel>] indicates where
the multichannel address is to be inserted into the command.
IEEE488.2 commands have been given an alias that is SCPI compliant if the
command is applicable to a power supply in multichannel operation. These
commands include *CLS, *IDN?, *OPT?, *RST, *TST?, *RCL, *SAV, *SDS,
and *WAI. See Table C-9, “System Commands” on page C–19 in your manual.
Multichannel Broadcast Commands
Add a suffix of "0" to simultaneously broadcast the "command" to the master and
all other units on the CANbus. Only commands are allowed, queries are not
allowed. Note that there will be a lag in execution time between the local unit and
all other units of up to a maximum of 20 ms. For example:
SOURCE0:VOLT 10.0
will set all units in a multichannel string to 10.0 V
Specifications
Important:
The multichannel interface may not handle multiline response messages.
Max connected units 50
Max cable length 40 m
Bus speed 700 kbits/sec
Termination 120 ohm 1/4 W
Connections parallel male DB9 to female DB9 cable
Addresses 1 to 50
TM-XDOP-01XN.book Page 15 Monday, July 17, 2006 11:19 AM