1260-X133 User Manual
Racal Instruments
©
2005
Module Operation 3-3
Figure 3-3 Message-Based Mode of Operation
In
the
register-based
mode, the user writes directly to the control
registers on the 1260-X133 module. The 1260-01T command
module does not monitor these operations, and does not keep
track of the relay states on the 1260-X133 module in this mode.
A conceptual view of the register-based mode is shown in
Figure
3-4
below.
Figure 3-4 Register-Based Mode of Operation
Since the 1260-01T switch controller does not keep track of relay
states during the register-based mode, it is advisable to use
either
the message-based or the register-based mode, and continue to
use the same mode throughout the application program.
In general, the message-based mode of operation is easier to use
with utility software such as the National Instruments VXI
Interactive Control (VIC) program. The message-based mode
allows the user to send ASCII text commands to the 1260-01T and
to read replies from the 1260-01T. In addition, some features, such
as the SCAN list, are available only in the message-based mode of
operation.
The register-based mode provides faster control of relay channels.
PC (MXI)
1260-01T
1260-X133
VXIbus
"CLOSE (@4(0))"
Write value 1 to A24 Address 205001
PC (MXI)
1260-X133
Write value 1 to A24 Address 205001
