PEP Modular Computers Modular Computers RS485 - Page 130

SMART I/O User’s Manual
March 12, 1996
©1996 PEP Modular Computers GmbH
Page 4 - 42
Chapter 4 Digital Modules
4.3.8.5 SMREL1GetRly
Syntax
error_code SMREL1GetRly(u_int8 PortNr,
u_int8 *buffer);
Description
This function gets the input of the port PortNr and writes it to the buffer.
Bits 0-5 of the buffer reflect the Relay setting:
0 = relay closed
1 = relay open
Bits 6 and 7 are cleared.
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 = SMREL1GetRly(0, buffer);