Agilent Technologies Water Heater E4350B Manual De Usuario

 

 
 Register Functions
 

The Questionable Status registers record signals that indicate abnormal operation of the Agilent SAS.  As shown in Figure
8-1, the group consists of the same type of registers as the Status Operation group.  The outputs of the Questionable Status
group are logically-ORed into the QUES(tionable) summary bit (3) of the Status Byte register.

 
 Register Commands
 

Programming for this group is derived from the STAT:QUES commands described in chapter 7 - Language Dictionary and
summarized in Table 8-3.

 

 Table 8-3.  Status :Questionable Commands

 Register

 Command

 Query

 Cleared By

 

Condition

 

(None)

 

 

Cannot be cleared

 

PTR Filter

 

 

 

Programming 0

 

NTR Filter

 

 

 

Programming 0 or STAT:PRES

 

Event

 

(None)

 

 

Reading or *CLS

 

Enable

 

 

 

Programming 0

 
 

 

 
 Register Functions
 

This group consists of an Event register and an Enable register that are programmed by common commands.  The Standard
Event Status Event register latches events relating to interface communication status (see Figure 8-1).  It is a read-only
register that is cleared when read.

 

Read query           *ESR?

 

Cleared by           *CLS    *ESR?

 
 

The Standard Event Status Enable register functions similarly to the enable registers of the Operation and Questionable
status groups. The outputs of the Standard Event Status Group are logically-ORed into the RSB summary bit (5) of the
Status Byte register.

 
 Register Commands
 

The common *ESE command programs specific bits in the Standard Event Status Enable register.  Because the Agilent
SAS implements *PSC, the register is cleared at power on if *PSC = 1. *ESR? reads the Standard Event Status Event
register and reading the register clears it.

 

Programmed by

 

Read query

 

 
 
 

 STATUS BYTE REGISTER
 
 

This register summarizes the information from all other status groups as defined in the "IEEE 488.2 Standard Digital
Interface for Programmable Instrumentation" standard.  The bit configuration is shown in Figure 8-1 and Table 8-2.  The
register can be read either by a serial poll or by *STB?.  Both methods return the same data, except for bit 6. Sending
*STB? returns MSS in bit 6, while polling the register returns RQS in bit 6.