User manual

Relay Multiplexer Command Reference 95Chapter 3
IEEE 488.2 Common Commands Reference
The following table lists the IEEE 488.2 Common (*) Commands that
apply to the E1460A Relay Multiplexer module. For more information on
Common Commands, see the applicable command module user’s
manual or the ANSI/IEEE Standard 488.2-1987.
Command Title Description
*CLS
Clear Status Register Clears all Status Registers, the Request for OPC flag, and all Queues
(except output queue).
*ESE
<mask> Event Status Enable Sets the bits in the Standard Event Status Enable Register
*ESE? Event Status Enable Query Queries the current contents in the Standard Event Status Enable
Register.
*ESR?
Event Status Register Query Queries and clears current contents in the Standard Event Status
Register.
*IDN? Identification Query Returns Identification String of the switchbox.
*OPC Operation Complete Sets the Request for OPC flag when all pending operations have
completed. Also sets OPC bit in the Standard Event Status Register.
*OPC? Operation Complete Query Returns a "1" to the output queue when all pending operations have
completed. Ensures synchronization between multiple instruments.
*RCL Recall Saved State Recalls previously stored multiplexer configuration. <n> (0 to 9) is
location in memory where the desired (previously stored) set-up is
located.
*RST Reset Opens all channels and invalidates current channel list for scanning.
Sets ARM:COUN 1, TRIG:SOUR IMM, INIT:CONT OFF, OUTP:STAT
OFF, SCAN:MODE NONE, and SCAN:PORT NONE
*SAV Save Current State Stores the current multiplexer configuration in memory. Stores current
settings of the channel states. <n> (0 to 9) is the location
in memory where the current set-up is to be stored.
*SRE
<mask> Service Request Enable Sets the Service Request Enable Register bits and corresponding
Serial Poll Status Register bits to generate a service request. Enable
an event by specifying its decimal weight for mask.
*SRE? Service Byte Enable Query Queries current contents in the Service Request Enable Register.
*STB? Status Byte Query Queries the current contents in the Status Byte Register.
*TRG Trigger When scan is enable and trigger source to TRIG:SOUR BUS, use
*TRG to trigger the switchbox to advance the scan.
*TST? Self-Test Query (cc = card
number with leading 0 
deleted)
Returns +0 if self test passes.
Returns +cc01 for firmware error.
Returns +cc02 for bus error (communication problem with card).
Returns +cc03 for bad ID information (ID Register on card).
Returns +cc10 if an interrupt was expected but not received.
Returns +cc11 if the busy bit was not held ~9 to 17 msec.
*WAI Wait to Continue Halts execution of commands and queries until No Operation
Pending message is true.