PEL-60-60-10 - Physical Instruments

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:
CURRent:LEVel:IMMediate 5
CURRent:IMMediate 5
CURR:IMM 5
CURR 5
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 the following commands can be obtained by placing a question mark after the command syntax.
Example: CURR?
CURRent ⇒Current Programming Functions
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 immediately in the constant current mode. If the
Electronic Load is not in the CC mode when the command is sent, the programmed 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 effect.
Parameter: 0 to maximum value; MIN; MAX Units: Amp.
Example: “CURR 50” – sets current input level to 50Amps
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 limit for the programmed delay period, the Electronic Load input is off and draws no
current.
Parameter: 0 to maximum value; MIN; MAX Units: Amp.
Example: “CURR:PROT:OVER 12”- sets the over-current protection to 12 Amps.
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: 0 to maximum value; Units: ms.
Example: “CURR:PROT:OVER:DEL 200”- sets the over-current protection delay time to 200 ms.
CURR:PROT:UND
This command sets an undercurrent protection limit to the input current that the Electronic Load will sink. When the
input currents falls below the undercurrent protection limit for the programmed delay period, the load input is off and
draws no current.
Parameter: 0 to maximum value; MIN; MAX Units: Amp.
Example: “CURR:PROT:UND 1.5”- sets the undercurrent protection to 1.5 Amps.
50