Pepper Computer Modular Computers RS485 - Manual (Page 138)

SMART I/O User’s Manual
Page 4 - 52
Digital Modules
08 Jan. 98 Manual ID 09901, Rev. Index 0500
O_EXT_POWER, 0);
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.