HP 3468A - Page 86

There are 5 bytes, each 8 bit wide, which may be used to determine the current
state of the 3468A.
lf the multimeter is addressed to talk after reception of the
”“B1” command it will output the 5 bytes. The meaning of the individual bytes is
given in the table of 3468A programming commands.
The first of the following two programs demonstrates how to get the binary
representation of the 5 bytes. The second program shows how the first three bits
of the first byte may be used to indicate the measurement function the 3468A is
set to. Similar steps may be used on the remaining bits and the other 4 bytes.
1 BINARY STATUS EXAMPLE
| -HP- 85 VERSION
REMOTE 9
OUTPUT 981 i; "Bi"
ENTER 941 USING
»82,B3, 84,85
DISP "BYTE 1=";:BIT(B1.?);B81T
CPL. G9; BITAB1,59;B1TC81.4958
ITCBL. 2; BITCE1. 29; BITCB1,. 19
iBITCBL. G3
SP "BYTE Z2="5BITCB2.79581T
ee Ae ee 2S; BITCB2, 4958
jBITCB2, 29; B1TCBZ, 1)
2.
7GBIT
i 3.43958
3.3; BITCRS,29;BITCBS. 1)
¢
"BYTE 4=";BIT(B4.7);BIT
6; BITCB4, SsBITCB4,. 4958
B4. 2. BITCB4, 29;BITCB4, 1)
ITCB4.@)
DISP "BYTE S="sBITCBS. 7>;BIT
CBS. 6°s5BITCBS, S9sBITCBS. 4978
ITCBS. 29; BITCBS, 29; B1ITCBS, 13
sBITCBS. @)
END
a whe
GQ Aegam
“SC1B" 5 BI
n
78
Be
38
SRA DY AOE HAD
148
118
18! STATE PROGRAM
2B ! -HP- 85 VERSION
@ REMOTE 9
4@ F=a
5@ QUTPUT 9a1 ; “Bi”
68 ENTER 961 USING "Stiga" = Bl
Ya IF BIT¢B1.7) THEM F=4
86 IF BITCR1.6> THEN F=F+2
98 IF BLT Goy S> THEN F=F+1
THEN G#="0C VOLTS"
THEN G$="AC VOLTS”
THEN G#="2-WIRE QHMS”"
THEN G#="4-WIRE CHMS"
THEN G$="0C AMPS"
THEN G#="AC AMPS"
166 IF F=7 THEN G$="EXTENDED OHM
Se
174 PRINT
18@ PRINT “FUNCTION: ":G
i938 END
Lines
30
40
50
60-100
Lines
30-60
70-90
100-160
170-180
82
Description
The REMOTE 9 message sets the interface
at select code 9 to the remote mode. It
also ensures that each device in the loop
has been autoaddressed by the controller.
This line outputs the command B1 to the
3468A which instructs it to output its five
status bytes,
The five status bytes are input to the con-
troller by this line.
Each line displays a bit by bit representa-
tion of one of the status bytes.
Description
These lines perform the same tasks as
lines 30-50 in the binary status program.
These three lines test the first three bits of
status byte #1 and assign a value to F ac-
cordingly.
The value of F is tested and G$ is assign-
ed accordingly.
The value of G$, which is the function the
3468A is set to, is displayed on the -hp-
Model 85 display.