Et system LAB-HP/E Series - Instruction Set; Quick View of Commands; Detailed Description of Commands

Universal interface
ET System electronic GmbH 11
Instruction Set
The IEEE-488.2 standard demands several basic commands. Some commands may occur twice for compatibility
reasons (once in the ETS version and once in the (old) IEEE-488.2 version). The following syntax is used to describe the
commands:
[]
Square brackets
 optional parameter
<>
Angle bracket
 numerical value
{}
Curly bracket
 selection list
|
Vertical line
 separator within selection list
Example
GTR[,{0|1|2}] means that the command GTR can be used with or without parameters. If a parameter exists, it has to be 1, 2 or 3. Valid
commands are: GTR GTR,1 GTR,2 GTR,3
IA[,<imax>] means that the command IA can be used either with or without parameters. If a parameter exists, it has to be a numerical
value.
Quick view of commands
Command
Description
Result
CLS* or CLS
Clear Status
Deletes the status byte
DCL
Device Clear
Initialization data reset
GTL
Go To Local
Activates front panel operation
GTR[,{0|1|2}]
Go To Remote
Activates digital interface operation
IA[,<imax>]
Set I
max
Adjusts current limiting
ID or *IDN?
Identification
Displays identification string
LLO
Local Lockout
Deactivates LOCAL button
LIMI
Limit I
a
Reads maximum adjustable current limitation
LIMU
Limit U
a
Reads maximum adjustable voltage limitation
MI[,<Nr>]
Measure I
a
Measures present output current
MU[,<Nr>]
Measure U
a
Measures present output voltage
*OPT?
Optional Identification Query
Displays units current hardware/software version
OVP[,<U
ovp
>]
Overvoltage Protection
Adjusts over voltage protection
PCx[,<baud>,<parity>,
<data bits>,<stop bits>,
<handshake>,<echo>,
<timeout>]
Program
Communication
Adjusts the interfaces
RI or *RST
Reset Instrument
Resets hardware (no return value)
SB[,{S|R|1|0}]
Standby
Enables/blocks the output
SS or *PDU
Save Setup
Saves previously made channel and interface parameter adjustments (no return
value)
STATUS
Status
Query of the units’ status (return values in binary format) (also see following
table)
STB or *STB?
Interface Status
Displays the interface status.
UA[,<ua>]
Set U
a
Adjusts output voltage (if there are no parameters, present set point is
displayed)
Detailed description of commands
CLS* or CLS - Clear Status
This command deletes the status byte. It affects only the status byte of the interface, the command was sent from. No
return value. For detailed description of the status byte see the different interface chapters.
DCL - Device Clear
This command resets the initialization data. No return value.
Caution: Interface parameters are also reset!