ngocauto_kepware v2.0.1

ngocauto_kepware

ngocauto_kepware is a library allows to connect with All PLCs to nodejs with Kepware OPC

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 kepware package

npm install kepserverex-js

• Step 2: install ngocauto kepware module

npm i ngocauto_kepware

• 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: in the Example channel_name is Channel and device in kepware

/////////////////////////////////////////////////////////////////////////
                  // CONNECT REPORT SERVER TO PLC //
/////////////////////////////////////////////////////////////////////////
// 1. PLC parameter setting
var channel_name    = 'Channel1.Device1';   // Channel and device in kepware
var host_IP         =  '127.0.0.1';         // Host IP, here using localhost
var port_ID         = 5000;                 // Port of IoT gateway server in kepware
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 = {
    tag_Bool        : 'tag_Bool',
    tag_Integer     : 'tag_Integer',
    tag_Real        : 'tag_Real',
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//3. System code (Fixed for all project)
var plckepware = require('ngocauto_kepware/ngocauto_kepware.js'); 
plckepware.val_Setup(channel_name, host_IP,port_ID, config_tag, tagval_show);
plckepware.para_Load();
setInterval(() => plc_tag = plckepware.tagRead(),scanTime*1000);
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


// Write value "true" to tag name "tag_Bool" with time out 3s
setTimeout(() => {
    plckepware.fn_Data_Write('tag_Bool',true);
  }, 3000);

Write tag value to PLC

• in this Example - function write value true to tag name 'tag_Bool'
• Note: Tag tag_Bool need to define first (at config_tag)

plckepware.fn_Data_Write('tag_Bool',true);