PEP Modular Computers Modular Computers RS485 - Page 134

SMART I/O User’s Manual
March 12, 1996
©1996 PEP Modular Computers GmbH
Page 4 - 46
Chapter 4 Digital Modules
4.3.8.9 SMREL1GetExtVcc
Syntax
error_code SMREL1GetExtVcc(u_int8 PortNr,
u_int8 *buffer);
Description
This function gets the input of the port PortNr and writes it to buffer.
If there is no external Vcc, then it returns 0, otherwise it returns 1.
Input
u_int8 PortNr SM-Port number to get data
u_int8 *buffer pointer to buffer where data is written
Output
error_code SUCCESS
E_BMODE if the module is unknown
or standard OS-9 error code (refer to the OS-9
Technical Manual Error Codes Section).
Example
RetVal = SMREL1GetExtVcc(0, buffer);