Digital Modules
08 Jan. 98
SMART I/O User’s Manual
Page 4 - 51Manual ID 09901, Rev. Index 0500
A complete list of the operate COMMANDS may be obtained
by selecting a project from the ISaGRAF projects group, open-
ing an application and observing the Common defines in the Dic-
tionary pull-down menu. Note that not all calls in the list may be
used within the SMART I/O environment. However, the calls
applicable to this module are:
O_INIT_CODE
Syntax and usage as explained above.
O_SET_LED
This operate call allows the user to control the yellow LED on
the board’s front panel. The syntax is as follows:
<analog var> := OPERATE(<iovar>, O_SET_LED,
<var>);
where
<analog var> represents the analog return variable and can
be zero, if the operate call is supported and the
correct <var> is passed, or non-zero, if an
error occurred.
<iovar> represents any module variable, and
<var> represents the LED to be controlled and must
be one of
OA_LED1_ON or
OA_LED1_OFF
.
O_EXT_POWER
This operate call can detect whether the external power has
failed or not, and has the following syntax:
<analog var> := OPERATE(<iovar>,
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