ProSoft Technology MVI69E-LDM - Manual (Page 81)

MVI69E-LDM ♦ "C" Programmable Contents
Linux Application Development Module Developer's Manual
ProSoft Technology, Inc. Page 81 of 130
August 21, 2014
5.5 Serial Ports
The API functions in this section can be used to access tag data withing CompactLogix
controllers. The prototypes for most of these functions and their associated data structure
definitions can be found in the header file OCXTagDb.h.
The tag access functions that include "Db" in the name are for use with a valid tag database
(see OCXcip_BuildTagDb ).
MVI69_GetSerialConfig
Syntax
int MVI69_GetSerialConfig (MVI69HANDLE handle,
MVI69SPCONFIG *spconfig);
Parameters
handle handle returned by previous call to MVI69_Open
spconfig pointer to structure of type MVI69SPCONFIG
Description
MVI69_GetSerialConfig retrieves the state of the serial port configuration jumper for the port
specified. The information is returned in the structure spconfig.
handle must be a valid handle returned from MVI69_Open.
The MVI69SPCONFIG structure is defined as follows:
typedef struct tagMVI69SPCONFIG
{
int port_num; /* Port number (1 or 2) */
int port_cfg; /* Jumper position */
} MVI69SPCONFIG;
port_num must be set to the desired port before calling this function. Upon return, port_cfg
will be set to one of the following values:
MVI69_SERIAL_CONFIG_NONE (No jumper installed)
MVI69_SERIAL_CONFIG_RS232
MVI69_SERIAL_CONFIG_RS422
MVI69_SERIAL_CONFIG_RS485
Return Value
MVI69_SUCCESS the configuration information was read successfully
MVI69_ERR_NOACCESS handle does not have access