KEPCO TMA VXI-27 - Manual (Page 51)

C-2
TMA VXI-27 101602
C.4
INITiate:CONTinuous
QUERY
INIT:CONT?
Syntax: Short Form: INIT:CONT? Long Form: :INITiate:CONTinuous?
Return Value: 1 or 0
Description: Determines whether continuous triggers are enabled or disabled. Power supply returns value of
INIT:CONT flag: “1” = continuous triggers are enabled (INIT:CONT ON); “0” = continuous triggers
disabled (INIT:CONT OFF). (See example, Figure C-3.)
C.5
INSTrument:CATalog
QUERY
INST:CAT?
Syntax: Short Form: INST:CAT? Long Form: :INSTrument:CATalog?
Return Value: comma separated string with the instrument numbers found on the bitbus.
Description: Allows the host computer to determine what instruments are on the bitbus. Unlike the *RST com-
mand, this command does not scan possible bitbus addresses to determine if the device is present.
The list contains all channel numbers found and allows the host computer to determine if the power
supplies are connected and powered-up (see Figure C-1).
FIGURE C-1. USE OF INSTrument:CATalog QUERY
C.6
INSTrument[:NSELect]
COMMAND
INST:NSEL
Syntax: Short Form :INST:NSEL <val> Long Form: INSTrument:NSELect <val>
Description: Selects power supply connected to channel number <VAL>; also brings off-line or “locked out”
power supply to on-line status. selects the instrument to which subsequent commands will be
addressed until another channel is selected. Identical to INST:SEL command (see Figure C-2).
C.7
INSTrument[:SELect]
COMMAND
INST:SEL
Syntax: Short Form :INST:SEL <val> Long Form: INSTrument:SELect <val>
Description: Selects power supply connected to channel number <VAL>; also brings off-line or “locked out”
power supply to on-line status. selects the instrument to which subsequent commands will be
addressed until another channel is selected. The <value> following the command is the channel
(node) number, from 1 to 31. This command is also used to bring a power supply on-line (i.e., the con-
troller recognizes a power supply assigned to a selected channel). In cases where a fault has “locked
out” a power supply (the controller no longer recognizes the power supply assigned to a channel), this
command restores the power supply to the system. (See example, Figure C-2).)
*RST Bitbus is scanned and all supplies are set to 0v, 0c, and Voltage mode
INST:CAT? With three power supplies connected to the TMA VXI-27 Power Supply
controller the TMA returns 1,2,3 if their addresses are set to 1, 2 and 3.
*** User turns off supply 2.
INST:CAT? TMA returns 1,3
*** User turns on supply 2
INST:CAT? TMA returns 1,3
INST2 Channel 2 restored
INST:CAT? TMA returns 1,2,3
*** User turns off supply 3
INST:CAT? TMA returns 1,2
VOLT3 4;:SYST:ERR? TMA returns "-240, Hardware not found"
*** User turns on supply 3
VOLT3 4;:SYST:ERR? Channel 3 restored
INST:CAT? TMA returns 1,2,3