Pepper Computer RS232, RS485 user manual OALED1ON, OALED2ON

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 two red LEDs 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, OA_LED2_ON,
	OA_LED1_OFF or OA_LED2_OFF.

O_ENABLE_CONV : This operate calls tells ISaGRAF to enable the conversion of a particular channel of a connected SM-DAC1 module. The syntax is as follows:

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

5

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.

October 01, 1996 ©1996 PEP Modular Computers GmbH Page 5 - 125