AMETEK Lx Series II Programming Manual - Manual (Page 159)

Programming Manual Lx \ Ls Series II
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7.5 Standard Event Status Group
This group consists of an Event register and an Enable register that are programmed by Common
commands. The Standard Event register latches events relating to interface communication
status (see Figure 7-1). It is a read-only register that is cleared when read.
The Standard Event Enable register functions similarly to the enable registers of the Operation
and Questionable status groups.
Command Action
*ESE programs specific bits in the Standard Event Enable register.
*PSC ON clears the Standard Event Enable register at power-on.
*ESR? reads and clears the Standard Event register.
The PON (Power On) Bit
The PON bit in the Standard Event register is set whenever the AC source is turned on. The most
common use for PON is to generate an SRQ at power-on following an unexpected loss of power.
To do this, bit 7 of the Standard Event Enable register must be set so that a power-on event
registers in the ESB (Standard Event Summary Bit). Bit 5 of the Service Request Enable register
must be set to permit an SRQ to be generated, and *PSC OFF must be sent. The commands to
accomplish these conditions are:
*PSC OFF
*ESE 128
*SRE 32