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VXI:WRITe
:WRITe
Parameters
Comments
Example
7-64 System Instrument Command Reference
VXI:WRITe < logical_addr> ,< register_addr> ,< data> allows access to the
entire 64 byte A16 register address space for the device specified by
logical_addr. Since the VXIbus system is byte-addressed, while the registers are
16 bits wide, registers are specified by even addresses only. This method of
identifying registers follows the VXIbus standard format.
Parameter
Parameter
Name
Type
logical_addr
decimal
numeric
register_addr
numeric
data
numeric
Specifying an odd register address will cause an error 2003,"Invalid word
address".
Specifying a logical address not currently in use in the system will cause
an error 2005,"No card at logical address".
Logical_addr must be specified in decimal. Register_addr and data may
be specified in decimal, hex (# H), octal (# Q), or binary (# B).
This command has been retained for compatibility with existing
programs. For new programs you should use the VXI:REG:WRIT
command.
Accesses are 16-bit non-privileged data accesses.
Related Commands: VXI:READ?, VXI:REG:WRIT
Write a value into a device's device dependent register.
VXI:WRIT 8,24,# H4200
Range of
Values
Must round to 0 through 255
must round to an even value
from 0 through 62 (3E
must round to -32768 to 32767
(0 to FFFF
)
h
write hex 4200 (16,896
decimal) to register 24 of device
at Logical Address 8
Default
Units
none
none
)
h
none
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