Change behaviour of python_eval function block : if TRIG is false, then ACK is also false except a pulse precisely when receiving answer from interpreter
/* File generated by Beremiz (PlugGenerate_C method of modbus Plugin instance) */
/*
* Copyright (c) 2016 Mario de Sousa (msousa@fe.up.pt)
*
* This file is part of the Modbus library for Beremiz and matiec.
*
* This Modbus library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this Modbus library. If not, see <http://www.gnu.org/licenses/>.
*
* This code is made available on the understanding that it will not be
* used in safety-critical situations without a full and competent review.
*/
#include "mb_addr.h"
#include "mb_tcp_private.h"
#include "mb_master_private.h"
#define DEF_REQ_SEND_RETRIES 0
// Used by the Modbus server node
#define MEM_AREA_SIZE 65536
typedef struct{
u16 ro_bits [MEM_AREA_SIZE];
u16 rw_bits [MEM_AREA_SIZE];
u16 ro_words[MEM_AREA_SIZE];
u16 rw_words[MEM_AREA_SIZE];
} server_mem_t;
typedef struct{
const char *location;
u8 slave_id;
node_addr_t node_address;
int mb_nd; // modbus library node used for this server
int init_state; // store how far along the server's initialization has progressed
pthread_t thread_id; // thread handling this server
server_mem_t mem_area;
} server_node_t;
// Used by the Modbus client node
typedef struct{
const char *location;
node_addr_t node_address;
int mb_nd;
int init_state; // store how far along the client's initialization has progressed
u64 comm_period;
int prev_error; // error code of the last printed error message (0 when no error)
pthread_t thread_id; // thread handling all communication with this client
} client_node_t;
// Used by the Modbus client plugin
typedef enum {
req_input,
req_output,
no_request /* just for tests to quickly disable a request */
} iotype_t;
#define REQ_BUF_SIZE 2000
typedef struct{
const char *location;
int client_node_id;
u8 slave_id;
iotype_t req_type;
u8 mb_function;
u16 address;
u16 count;
int retries;
u8 error_code; // modbus error code (if any) of current request
int prev_error; // error code of the last printed error message (0 when no error)
struct timespec resp_timeout;
// buffer used to store located PLC variables
u16 plcv_buffer[REQ_BUF_SIZE];
// buffer used to store data coming from / going to server
u16 coms_buffer[REQ_BUF_SIZE];
pthread_mutex_t coms_buf_mutex; // mutex to access coms_buffer[]
} client_request_t;
/* The total number of nodes, needed to support _all_ instances of the modbus plugin */
#define TOTAL_TCPNODE_COUNT %(total_tcpnode_count)s
#define TOTAL_RTUNODE_COUNT %(total_rtunode_count)s
#define TOTAL_ASCNODE_COUNT %(total_ascnode_count)s
/* Values for instance %(locstr)s of the modbus plugin */
#define MAX_NUMBER_OF_TCPCLIENTS %(max_remote_tcpclient)s
#define NUMBER_OF_TCPSERVER_NODES %(tcpserver_node_count)s
#define NUMBER_OF_TCPCLIENT_NODES %(tcpclient_node_count)s
#define NUMBER_OF_TCPCLIENT_REQTS %(tcpclient_reqs_count)s
#define NUMBER_OF_RTUSERVER_NODES %(rtuserver_node_count)s
#define NUMBER_OF_RTUCLIENT_NODES %(rtuclient_node_count)s
#define NUMBER_OF_RTUCLIENT_REQTS %(rtuclient_reqs_count)s
#define NUMBER_OF_ASCIISERVER_NODES %(ascserver_node_count)s
#define NUMBER_OF_ASCIICLIENT_NODES %(ascclient_node_count)s
#define NUMBER_OF_ASCIICLIENT_REQTS %(ascclient_reqs_count)s
#define NUMBER_OF_SERVER_NODES (NUMBER_OF_TCPSERVER_NODES + \
NUMBER_OF_RTUSERVER_NODES + \
NUMBER_OF_ASCIISERVER_NODES)
#define NUMBER_OF_CLIENT_NODES (NUMBER_OF_TCPCLIENT_NODES + \
NUMBER_OF_RTUCLIENT_NODES + \
NUMBER_OF_ASCIICLIENT_NODES)
#define NUMBER_OF_CLIENT_REQTS (NUMBER_OF_TCPCLIENT_REQTS + \
NUMBER_OF_RTUCLIENT_REQTS + \
NUMBER_OF_ASCIICLIENT_REQTS)
/*initialization following all parameters given by user in application*/
static client_node_t client_nodes[NUMBER_OF_CLIENT_NODES] = {
%(client_nodes_params)s
};
static client_request_t client_requests[NUMBER_OF_CLIENT_REQTS] = {
%(client_req_params)s
};
static server_node_t server_nodes[NUMBER_OF_SERVER_NODES] = {
%(server_nodes_params)s
}
;
/*******************/
/*located variables*/
/*******************/
%(loc_vars)s