Pepper Computer RS485 User Manual

SMART I/O User’s Manual

October 01, 1996

Page 5 - 103

Chapter 5 Analog Modules

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_ENABLE_CONV

: This operate call tells ISaGRAF to enable the

conversion of a particular channel of a connected

SM-ADC1 module. The syntax is as follows:

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

where

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.

<iovar>

is the variable name for the channel where the

operate call is to take effect.

O_DISABLE_CONV

: This operate call tells ISaGRAF to disable the

conversion of a particular channel of a connected

SM-ADC1 module. The syntax is as follows:

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

where

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.

<iovar>

is the variable name for the channel where the

operate call is to take effect.