table of contents
MODBUS_NEW_RTU(3) | Libmodbus Manual | MODBUS_NEW_RTU(3) |
NAME¶
modbus_new_rtu - create a libmodbus context for RTUSYNOPSIS¶
modbus_t *modbus_new_rtu(const char *device, int baud, char parity, int data_bit, int stop_bit);DESCRIPTION¶
The modbus_new_rtu() function shall allocate and initialize a modbus_t structure to communicate in RTU mode on a serial line.•
N for none
•
E for even
•
O for odd
RETURN VALUE¶
The modbus_new_rtu() function shall return a pointer to a modbus_t structure if successful. Otherwise it shall return NULL and set errno to one of the values defined below.ERRORS¶
EINVALAn invalid argument was given.
EXAMPLE¶
modbus_t *ctx; ctx = modbus_new_rtu("/dev/ttyUSB0", 115200, 'N', 8, 1); if (ctx == NULL) { fprintf(stderr, "Unable to create the libmodbus context\n"); return -1; }
SEE ALSO¶
modbus_new_tcp(3) modbus_free(3)AUTHORS¶
The libmodbus documentation was written by Stéphane Raimbault < stephane.raimbault@gmail.com[1]>NOTES¶
- 1.
- stephane.raimbault@gmail.com
mailto:stephane.raimbault@gmail.com
05/26/2012 | libmodbus 3.0.3 |