dm_Start (start direct mode)

Owned by du
Last updated: Apr 20, 2016

Function

int16 dm_Start(uint16 uiPortNo, uchar08 ucSpeed, char08 *cpErrMsg);

Description

Start direct mode between Master and IO-Link device on required speed (COM1 / COM2 / COM3).

Input Parameters

  • uchar08 uiPortNo – (virtual) comport number in order to communicate with Master
  • uchar08 ucSpeed – direct mode speed (0 - COM0, 1 - COM1, 2 - COM3)

Output parameters

  • char08 *cpErrMsg – pointer to buffer to return error message (minimum 256 bytes)

Return value

Zero if success or negative error number.

Example

enum {

  DM_SPEED_COM1 /* 4.8 kBps */,

  DM_SPEED_COM2 /* 38.4 kBps */,

  DM_SPEED_COM3 /* 230.4 kBps */,

};

int16 iRes = dm_Start(iPortNo, DM_SPEED_COM2);