MODBUS_CONNECT(3) Libmodbus Manual MODBUS_CONNECT(3)
NAME
modbus_connect - establish a Modbus connection
SYNOPSIS
int modbus_connect(modbus_t *ctx);
DESCRIPTION
The modbus_connect() function shall etablish a connection to a Modbus server, a network or a bus using the context information of libmodbus
context given in argument.
RETURN VALUE
The modbus_connect() function shall return 0 if successful. Otherwise it shall return -1 and set errno to one of the values defined by the
system calls of the underlying platform.
EXAMPLE
modbus_t *ctx;
ctx = modbus_new_tcp("127.0.0.1", 502);
if (modbus_connect(ctx) == -1) {
fprintf(stderr, "Connection failed: %s
", modbus_strerror(errno));
modbus_free(ctx);
return -1;
}
SEE ALSO
modbus_close(3)
AUTHORS
The libmodbus documentation was written by Stephane Raimbault <stephane.raimbault@gmail.com[1]>
NOTES
1. stephane.raimbault@gmail.com
mailto:stephane.raimbault@gmail.com
libmodbus 3.0.3 05/26/2012 MODBUS_CONNECT(3)
