National Instruments NI-488.2 ユーザーズマニュアル
© National Instruments Corporation
B-1
B
Status Word Conditions
This appendix gives a detailed description of the conditions reported in the
status word,
status word,
ibsta
.
For information about how to use
ibsta
in your application program, refer
to the NI-488.2 online help. For instructions on accessing the online help,
refer to the
refer to the
Each bit in
ibsta
can be set for device calls (dev), board calls (brd), or both
(dev, brd). Table B-1 shows the status word layout.
Table B-1. Status Word Layout
Mnemonic
Bit Position
Hex Value
Type
Description
ERR
15
8000
dev, brd
NI-488.2 error
TIMO
14
4000
dev, brd
Time limit exceeded
END
13
2000
dev, brd
END or EOS detected
SRQI
12
1000
brd
SRQ interrupt received
RQS
11
800
dev
Device requesting service
CMPL
8
100
dev, brd
I/O completed
LOK
7
80
brd
Lockout State
REM
6
40
brd
Remote State
CIC
5
20
brd
Controller-In-Charge
ATN
4
10
brd
Attention is asserted
TACS
3
8
brd
Talker
LACS
2
4
brd
Listener
DTAS
1
2
brd
Device Trigger State
DCAS
0
1
brd
Device Clear State