modbus_connect(3) ================= NAME ---- modbus_connect - establish a Modbus connection SYNOPSIS -------- *int modbus_connect(modbus_t *'ctx');* DESCRIPTION ----------- The *modbus_connect()* function shall establish a connection to a Modbus server, a network or a bus using the context information of libmodbus context given in argument. RETURN VALUE ------------ The 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 ------- [source,c] ------------------- modbus_t *ctx; ctx = modbus_new_tcp("127.0.0.1", 502); if (modbus_connect(ctx) == -1) { fprintf(stderr, "Connection failed: %s\n", modbus_strerror(errno)); modbus_free(ctx); return -1; } ------------------- SEE ALSO -------- linkmb:modbus_close[3] AUTHORS ------- The libmodbus documentation was written by Stéphane Raimbault