Basic Definition For Command - Delta A6000 User Manual

USER MANUAL
A6000
AC POWER SOURCE

6.9 Basic Definition for Command

Construction of DME-A602ABS SERIES remote control command is based on tree system,
every command must have a full path so instrument can receive it.
Tree structure use " : " as node. Command or data at left side of node is in higher level
while at right side is in detail level. More commands are at more left side, more details are
at more right sides.
DME-A602ABS SERIES includes two distinctive types of command. The first one is
command described in IEEE 488.2, it is common commands for GPIB, represented by " * "
at beginning of the command. The second one is instruments self-defined commands. All
commands are not upper/lower case sensitive.
There are some special symbols in commands:
 Colon ( : ): Colon represents node for tree system, use colon to downstream to different
 Question mark ( ? ): Question mark represents this message is question, instruments
 semicolon ( ; ): there are two usages for semicolon,:
1. First usage: back to previous node,
nd
2. 2 usage:
 Space ( ): Space is used to separate command and number or string after it.
 Star (*): Represents this command is follow the standard of IEEE 488.2, it can be used
for all instruments support IEEE 488.2 command.
Example: *IDN?
Explanation: Common command to query instrument name. Instrument will
77 │ www.deltaww.com
parameter until complete command constructed. For example: VOLT:AC?
will prepare the answers for sender to read. If sender does not read
after sending questions, instrument will reserve the answer for last
question command.
Example: computer send: VOLT:AC?
VOLT:AC 100;LIM:AC 200
Example:
Explanation: The above instruction has two commands which are
VOLT:AC 100 and VOLT:LIM:AC 200 , ( ; ) can save one
repeated string VOLT and complete two commands in one
instruction, instrument will execute commands in sequence.
first input semicolon then colon, represents command branches from
beginning,
VOLT:AC 100;:FETCh:CURRent:AC?
Example:
Explanation: The above instruction has two commands which are
VOLT:AC 100 and FETCh:CURRent:AC? . Use ( ;: ) can
connect commands more than two.
Instrument differentiate command and data by space.
Example: VOLT:AC 100
answer its series number. DME-A602ABS A,000,000 will be the
answer for this AC source.
Instrument side: 150.0