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Chapter 6 SCPI Communication Protocal
6.1 SCPI Communication Command Introduction
SPS8 series programmable DC power supply supports SCPI communication protocol.
SCPI communication protocol is a standard commands for programmable instruments, which defines a
standard set of communication commands.Command for SPS8 series power supply can be divided into two
categories: basic commands (IEEE-488.2 Common Command Set) and command specified by SPS8 series
power supply.
SCPI command is ordered arrangements of tree constructs. Each command contains a number of strings
(mnemonic) . Layers separated by a colon (:). At the top of the command in the command tree known as the
"root shell" or simply "root." Access to the next command, you must specify a path. Ordered tree is structured
as follows:
In the above table: AA represents the root path; BB, CC, DD represents the direct sub-path of root path AA. EE,
FF, GG said that the path is a sub-sub-path under the BB. HH, JJ said that the path is a sub-sub-path under DD.
Command description:
1)
[:] AA: CC
means the current root path for the AA, visit the CC under the AA.
2)
[:] AA: BB: FF
means the current root path for the AA, visit the FF of the sub-path BB under the
AA.
3)
[:] AA: DD: HH
means the current root path for the AA, visit the HH of the sub-path DD under the
AA.
This command can send more than one order in a message and use a semicolon (;) between each order.
Example:
[:]AA:BB:EE;FF;GG
means access to the EE, FF, GG under the BB.
[:]AA:BB:FF;:AA:DD:HH
means access to FF under the BB and HH under the DD.
SCPI language mnemonic (keywords) has two farmat: long format and short format. Short format is actually
short for long format. It uses the following rules:
Short format mnemonic is the first four characters of long format mnemonic. If the length of the
long-form mnemonic characters less than or equal to 4, then the long mnemonic is the same as short
