Table 3-1. Status Word Layout - National Instruments NI-488.2 User Manual

Chapter 3 Developing Your NI-488.2 Application
NI-488.2 User Manual for Windows
you check for possible errors after each call using the
debugging your application is much easier.
is a 16-bit value. A bit value of one (1) indicates that a certain
ibsta
condition is in effect. A bit value of zero (0) indicates that the condition is
not in effect. Each bit in
NI-488.2 calls (dev), board-level traditional NI-488.2 calls and
multi-device NI-488.2 calls (brd), or all (dev, brd).
Table 3-1 shows the condition that each bit position represents, the bit
mnemonics, and the type of calls for which the bit can be set. For a detailed
explanation of each status condition, refer to Appendix B,
Conditions.
Bit
Mnemonic Pos
ERR 15
TIMO 14
END 13
SRQI 12
RQS 11
CMPL 8
LOK 7
REM 6
CIC 5
ATN 4
TACS 3
LACS 2
DTAS 1
DCAS 0
can be set for device-level traditional
ibsta

Table 3-1. Status Word Layout

Hex
Value Type
8000 dev, brd
4000 dev, brd
2000 dev, brd
1000 brd
800 dev
100 dev, brd
80 brd
40 brd
20 brd
10 brd
8 brd
4 brd
2 brd
1 brd
3-6
ERR bit,
ibsta
Status Word
Description
NI-488.2 error
Time limit exceeded
END or EOS detected
SRQ interrupt received
Device requesting
service
I/O completed
Lockout State
Remote State
Controller-In-Charge
Attention is asserted
Talker
Listener
Device Trigger State
Device Clear State
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