Et system LAB-SMS/E Series, Manual

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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 rea-
sons (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 dis-
played)
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!