src/modbus-tcp-private.h

   1 /*
   2  * Copyright © 2001-2010 Stéphane Raimbault <stephane.raimbault@gmail.com>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser Public License as published by
   6  * the Free Software Foundation; either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU Lesser Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _MODBUS_TCP_PRIVATE_H_
  19 #define _MODBUS_TCP_PRIVATE_H_
  20
  21 #define _MODBUS_TCP_HEADER_LENGTH      7
  22 #define _MODBUS_TCP_PRESET_REQ_LENGTH 12
  23 #define _MODBUS_TCP_PRESET_RSP_LENGTH  8
  24
  25 #define _MODBUS_TCP_CHECKSUM_LENGTH    0
  26
  27 typedef struct _modbus_tcp {
  28     /* TCP port */
  29     int port;
  30     /* IP address */
  31     char ip[16];
  32 } modbus_tcp_t;
  33
  34 #define _MODBUS_TCP_PI_NODE_LENGTH    1025
  35 #define _MODBUS_TCP_PI_SERVICE_LENGTH   32
  36
  37 typedef struct _modbus_tcp_pi {
  38     /* TCP port */
  39     int port;
  40     /* Node */
  41     char node[_MODBUS_TCP_PI_NODE_LENGTH];
  42     /* Service */
  43     char service[_MODBUS_TCP_PI_SERVICE_LENGTH];
  44 } modbus_tcp_pi_t;
  45
  46 #endif /* _MODBUS_TCP_PRIVATE_H_ */