Ngocauto_siemensplc NPM

ngocauto_siemensplc

ngocauto_siemensplc is a library allows to connect with Siemens PLCs include S7-300, S7-400, S7-1200 and S7-1500

This software using for ngocautomation community platform Support: (Zalo VietNam) +84904701605, g_mail: ngocautomation.info@gmail.com

How to Installation

Using npm to install:

Step 1: install nodes7

npm i nodes7

Step 2: install ngocauto siemens plc

npm i ngocauto_siemensplc

Step 3: install loadash

npm i lodash

How to use

Read data: The readed data will store in the Variable save PLC tags value - plc_tag
Note 1: PLC need to enable PUT/GET function to connect
Note 2: if you want to connect with DB (datablock), it need to disable "Optimized block access" function (Right click on the DB block > Attributes > Optimized block access )

/////////////////////////////////////////////////////////////////////////
                  // CONNECT REPORT SERVER TO PLC //
/////////////////////////////////////////////////////////////////////////
// 1. PLC parameter setting
var PLC_IP      = '192.168.0.1';     // PLC IP address
var Slot_ID     = 1;                 // S71200/1500 = 1, S7300/400 = 2
var scanTime    = 1;                 // Scan time (second)
var plc_tag     = "";                // Variable save PLC tags value
var tagval_show    = true;           // Show tag value (true = yes, false = no)

//2. PLC tag defined
var config_tag = { 
    Q_Valve1:       'M10.0',
    Product_Count:  'MW100',
    Flow_In:        'MR102',
};
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//3. System code (Fixed for all project)
var s7plc = require('ngocauto_siemensplc/ngocauto_siemensplc.js'); 
s7plc.val_Setup(PLC_IP, Slot_ID, config_tag, tagval_show);
s7plc.para_Load();
setInterval(() => plc_tag = s7plc.tag_read(),scanTime*1000);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Exampla with Data Block tag (DB)

/////////////////////////////////////////////////////////////////////////
                  // CONNECT REPORT SERVER TO PLC //
/////////////////////////////////////////////////////////////////////////
// 1. PLC parameter setting
var PLC_IP      = '192.168.0.1';     // PLC IP address
var Slot_ID     = 1;                 // S71200/1500 = 1, S7300/400 = 2
var scanTime    = 1;                 // Scan time (second)
var plc_tag     = "";                // Variable save PLC tags value
var tagval_show    = true;           // Show tag value (true = yes, false = no)

//2. PLC tag defined
var config_tag = { 
    Q_Valve1:       'DB1,X0.0', // tag bool
    Q_Valve2:       'DB1,X0.1', // tag bit
    Product_Count:  'DB1,INT2', // tag integer
    Flow_In:        'DB1,REAL4', // tag Real
    Flow_Total:     'DB1,DINT8', // tag double integer
    Tank_Level:     'DB1,REAL12' // tag real
};
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//3. System code (Fixed for all project)
var s7plc = require('nodes7/ngocautores/s7plc.js'); 
s7plc.val_Setup(PLC_IP, Slot_ID, config_tag, tagval_show);
s7plc.para_Load();
setInterval(() => plc_tag = s7plc.tag_read(),scanTime*1000);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Write tag value to PLC

in this Example - function write value 456 to tag name 'Procduct_Count'
Note: Tag Product_Count need to define first (at config_tag)

// Write data to PLC by tag name
var s7plc_write = require('ngocauto_siemensplc/ngocauto_siemensplc.js'); 
s7plc_write.nat_tag_Write('Product_Count',456);

Write multipe tags to PLC

in this Example - function write 3 tag ('Q_Valve1', 'Product_Count', 'Flow_In') with 3 value (true, 123, 456.78) as array
Note: Tag Product_Count need to define first (at config_tag)

  // Write data to PLC by tag array 
  var s7plc_write = require('ngocauto_siemensplc/ngocauto_siemensplc.js'); 
  // Tag name and tag value define
  var tag_name = ['Q_Valve1', 'Product_Count', 'Flow_In']
  var tag_val = [true, 123, 456.78]
  s7plc_write.nat_tag_Write(tag_name,tag_val);

Addressing Examples:

M10.0 - Bit M10.0
Q0.0 - Bit Q0.0
MR30 - MD30 as REAL
MW100 - MW30 as integer
DB10,LR32 - LREAL at byte offset 32 in DB10, for 1200/1500 only
DB10,INT6 - DB10.DBW6 as INT
DB10,I6 -same as above
DB10,INT6.2 - DB10.DBW6 and DB10.DBW8 in an array with length 2
DB10,X14.0 - DB10.DBX14.0 as BOOL
DB10,X14.0.8 - DB10.DBB14 as an array of 8 BOOL
PIW30 - PIW30 as INT
DB10,S20.30 - String at offset 20 with length of 30 (actual array length 32 due to format of String type, length byte will be read/written)
DB10,S20.30.3 - Array of 3 strings at offset 20, each with length of 30 (actual array length 32 due to format of String type, length byte will be read/written)
DB10,C22.30 - Character array at offset 22 with length of 30 (best to not use this with strings as length byte is ignored)
DB10,DT0 - Date and time
DB10,DTZ0 - Date and time in UTC
DB10,DTL0 - DTL in newer PLCs
DB10,DTLZ0 - DTL in newer PLCs in UTC