Pepper Computer Modular Computers RS485 - Manual (Page 214)

SMART I/O User’s Manual
March 12, 1996 ©1996 PEP Modular Computers GmbH Page 5 - 58
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 calls tells ISaGRAF to enable the
conversion of a particular channel of a connected
SM-PT100 module. The syntax is as follows:
<analog var> := OPERATE(<iovar>, O_ENABLE_CONV, 0);
where
<analog var>
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-PT100 module. The syntax is as follows:
<analog var> := OPERATE(<iovar>, O_DISABLE_CONV, 0);
where
<analog var>
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.