Pepper Computer RS232, RS485 user manual Represents the analog return variable and can

Chapter 5 Analog Modules SMART I/O User’s Manual

A complete list of the operate COMMANDS may be obtained by selecting a project from the ISaGRAF projects group, opening an application and observing the Common defines in the Dictionary 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 : The syntax and usage have already been explained.

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_ENABLE_CONV : This operate calls tells ISaGRAF to enable the conversion of a particular channel of a connected SM-DAD1 module. The syntax is as follows:

<analog var> := OPERATE(<iovar>, O_ENABLE_CONV, 0);

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where <analog var>

<iovar>

represents the analog return variable and can be zero if the operate call is supported and the correct <iovar> is passed or non-zero if an error occurred.

is the variable name for the channel where the operate call is to take effect.

March 12, 1996 ©1996 PEP Modular Computers GmbH Page 5 - 27