HP 5501A Operating And Service Manual page 151

Table 4-73. 70746A Binary Interface Typical Program (Cont'd)
*It should be noted when a reference error occurs both measure and error signals willalso go true. In this
example X and Y will both show a measure error although no measure error has occurred.
PROGRAM
47: if B>=4; B-4+B; I--D
48: if B>=2;prt "ref errorn;*
0-D
49: if B=l;prt "meas error";
0-D
50: if D4;gto"prterrJ'
51: rdb(2)+B
52: wtb2,24,3
53: rdb(2)-B; if B<0;
65536+B--B
54: r d b ( 2 ) S ; ifG<0;
65536%-G
55: int(B/4096)--D
56: 8-4896*D--B
57: (65536*B+G)*tnt(2-D)-B
58: if F 4 and B - I W f i
B-2r 28-8
59: if F=l and B-1Wa;
B-2 t28+B
60: ret
61: "prterr": ifF=0;
prt "X-AXIS ERROR"
62: if F=l; prt
"Y-AXIS ERROR"
63: dsp "go to gageJJ;stp
64: gto fi
65: end
I f using a 5570A Automatic Compensator, a OV(96) command must be sent to guarantee update o f data.
(This should be done at beginning o f program.)
COMMENT
If Bit 26, D=l as possible recoverable error. Clear Bit 26.
If Bit 25, D 4 as irrecoverable error. Clear bit 25.*
If Bit 24, D = 0 as irrecoverable error. Print "meas error".
go to "prterr" if irrecoverable error. Refer to step 61.
Overflow only. Read i n bits 15-0 t o complete previous 3P command.
2491
=
80
= clears error bits o n 10746A so 28 bits of data can be
transferred with 3P command. 3
=
3P = prepare t o transfer.
Read i n bits 31-16. Complements if negative.
Reads in bits 15-0. Complements if negative.
D contains bits 31-28 decimal point information.
B
=
Bits 27-16.
B*2116
+
Bits 15-0. 2-D applies decimal point.
Correct for overflow. (Really underflow).
Correct for overflow. (Really underflow).
Irrecoverable error, so stop and go t o gage.
Table 4-74. Binary Interface Typical Program Variables
I
VARIABLE CONTENTS
I
r l
I
X Tolerance in Microns
Y Tolerance i n Microns
X Destination i n MM or Fringes
Y Destination i n MM or Fringes
Compensation Number for VOL and Material Temperature
Current X Location in Fringes
I
r4
I
Current Y Location in Fringes