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1260-22 User Manual
Operating The 1260-22 In Message-Based Mode
Channel
Descriptors For
The 1260-22
Module
Module Operation 3-2
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In general, the message-based mode of operation is easier to use
with utility programs, such as National Instruments 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, there are a few features, such as a SCAN list, which
are available only with the message-based mode of operation.
The register-based mode of operation provides a faster update of
relay channels. This mode provides for relay operations in less
than 4.5 microseconds (not counting software overhead inherent in
I/O libraries such as VISA).
Consult the 1260-01T User's Manual for a comparison of the
message-based and register-based modes of operation.
The standard 1260-01T commands are used to operate the 1260-
22 module.
These commands are described in the 1260-01T
User's Manual.
Each 1260-01T relay command uses a channel descriptor to select
the channel(s) of interest. The syntax for a channel descriptor is
the same for all 1260 series modules. In general, the following
syntax is used to select a single channel:
(@ <module address> ( <channel> ) )
Where:
<module address>
is the address of the 1260-22 module, as set
by the logical address DIP switch SW1 on
the 1260-22.
The module address is a number from 1 through 12, inclusive.
Set the module addresses for the 1260-22 and other 1260-Series
modules so that no address is used by more than one 1260-Series
module.
For instructions on setting module addresses for a
1260-Series module, see the label on the side panel of the
module.
<channel>
is the 1260-22 channel to operate. This will be a
number in the range from 0 through 39, inclusive.
EADS North America Test and Services
Publication No. 980673-055 Rev. A
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