Fluke PM6681R, PM6685R manual Standard Status Registers, G ic a, A t u s B y t e, G i s t e r

Using the Subsystems

–When you find it, check which bits in the Status Byte Register are true.

–Let’s say that bit 7, OPR, is true. Then read the contents of the Opera- tion Status Register. In this register you can see what caused the SRQ.

–Take appropriate actions depending on the reason for the SRQ.

Standard Status Registers

These registers are called the standard status data structure because they are mandatory in all instruments that fulfill the IEEE 488.2 standard.

P OUNRCQMEEXDEDQEYREQOCP C

S t a n d a r d E v e n t

76		5	413	2	0
S t a t u s R e g is t e r
* E S R ?
* E S E	S <tNa Rnfd>a r d			E v e n t S t a t u s E n a b le
* E S E	?				O u t p u t
		L o g ic a		l O	QRu e u e
			O u t p u t Q u		e u	e n o t e m p t y

S t a t u s B y t e

R Q S

S e r

v

ic e

R e g i s t e r

7

6

3

12

R e q

0

u e s tE S B M A V

G e n

e r a t

io

n

< . . . r e a d b y * S T B ?

M S S

S R Q

s ig

n a

lS e r

v

ic

e

R* S R E e<sNtR fE>n a b le

* S R E ?

L o g ic a

l

O R

Figure 6-8Standard status data structures, overview.

6-20 Status Subsystem