Scpi (Gpib & Rs-232) Command Set - Ametek Amrel PLA Series Operation Manual

SCPI commands should adhere to their syntax and format structure (command line) in order to be properly process by the
electronic load.
Query commands request measured values, status, or programmed settings from the electronic load.
System commands belong to the GPIB bus system commands list to controls GPIB bus condition and electronic load
interface system. Some commands are not compatible with RS-232 interface.
SCPI (GPIB & RS-232) COMMAND SET
The following describes the GPIB (IEEE488.2) command set for the Programmable Electronic Load Series. All the
electronic load commands follow SCPI format and are RS232 compliant. The commands in brackets are implicit and
don't have to be written out. The letters in bold is the short form syntax of the command mnemonic. For example, the
command CURRent[:LEVel][:IMMediate] has the following equivalent forms:
All of the above commands will set the Current value to 5Amps.
*NOTE: The parameters MIN and MAX designate minimum and maximum programmable value of the range.
Queries for each of t he following commands can be obtained by placing a question mark after the command syntax.
Example: CURR?
Current Programming Functions
CURRent
This subsystem programs the constant current mode functions of the Electronic Load. The IEEE 488.1 command, "ISET"
and "SET" (if current active mode is CC mode), can also be used.
CURR
This command sets the input current level that is to be applied im mediately in the constant current mode. If the
Electronic Load is not in the CC mode when the command is sent, the pro grammed level is saved and is applied when the
Load changes to CC mode. The rate of input change is in accord with the slew rate in effe ct.
Parameter:
Example:
CURR:PROT:OVER
This command sets a protection limit to the input current that the Electronic Load will sink. When the input current
reaches the programmed current lim it for the pro grammed delay period, the Electronic Load input is off and draws no
current.
Parameter:
Example:
CURR:PROT:OVER:DEL
This command sets the delay time in millisecond for current protection. When the input current reaches the programmed
current limit for the programmed delay period, the Electronic Load input is off and draws no current.
Parameter:
Example:
CURR:PROT:UND
This command sets an undercurrent protection limit to the input current that the Electronic Load will sink. W hen the
input current falls below the undercurrent protection limit for the programmed delay period, the load input is off and
draws no current.
M470039-01 REV-F
CURRent:LEVel:IMMediate 5
CURRent:IMMediate 5
CURR:IMM 5
CURR 5
0 to maximum value; MIN; MAX
"CURR 50" – sets current input level to 50Amps
0 to maximum value; MIN; MAX
"CURR:PROT:OVER 12"- sets the over-current protection to 12 Amps.
0 to maximum value;
"CURR:PROT:OVER:DEL 200"- sets the over-current protection delay time to 200 ms.
Units: Amp.
Units: Amp.
Units: ms.
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