node-red-contrib-modbustcp-no-pooling/modbustcp.html

Node-RED nodes for communicating with a MODBUS TCP Server with no pooling to slave device registers.

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 * Original work Copyright 2015 Valmet Automation Inc.
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * You may obtain a copy of the License at
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 * Unless required by applicable law or agreed to in writing, software
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 * Modified work Copyright 2016 Argonne National Laboratory.
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 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
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 * http://opensource.org/licenses/BSD-3-Clause
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 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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<script type="text/x-red" data-template-name="modbustcp-no-pooling-server">
    <div class="form-row">
        <label for="node-config-input-host"><i class="icon-bookmark"></i> Host</label>
        <input type="text" id="node-config-input-host">
    </div>
    <div class="form-row">
        <label for="node-config-input-port"><i class="icon-bookmark"></i> Port</label>
        <input type="text" id="node-config-input-port">
    </div>
    <div class="form-row">
        <label for="node-config-input-unit_id"><i class="icon-bookmark"></i> Unit Id</label>
        <input type="text" id="node-config-input-unit_id">
    </div>
</script>

<script type="text/x-red" data-help-name="modbustcp-no-pooling-server">
    <p>Uses MODBUS TCP to read/write ethernet host:port and register/coil addresses.</p>
</script>

<script type="text/x-red" data-template-name="modbustcp-no-pooling-write">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-dataType"><i class="icon-list"></i> Type</label>
        <select id="node-input-dataType">
            <option value="Coil">FC 5: Write Single Coil</option>
            <option value="HoldingRegister">FC 6: Write Single Holding Register</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-adr"><i class="icon-bookmark"></i> Address</label>
        <input type="text" id="node-input-adr">
    </div>
    <div class="form-row">
        <label for="node-input-server"><i class="icon-bookmark"></i> Server</label>
        <input type="text" id="node-input-server">
    </div>
</script>

<script type="text/x-red" data-help-name="modbustcp-no-pooling-write">
    <p>Modbus TCP client node.  Connects to a Modbus TCP server to write <b>msg.payload</b> to a coil or register.
    <h4>Function codes currently supported include:</h4>
        <ul>
          <li>FC 5: Write Single Coil</li>          
          <li>FC 6: Write Single Holding Register</li>          
        </ul>  
     Choose a function code (FC) from the dropdown menu, select the coil/register start address (0:65535).  Choose or edit the Modbus TCP server configuration.
     <br><br>
    For FC 5, <b>msg.payload</b> must be a number or string value of 0 or 1.  For FC 6, <b>msg.payload</b> must be a number or string value between 0:65535.
     </p>
</script>

<script type="text/x-red" data-template-name="modbustcp-no-pooling-read">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-dataType"><i class="icon-list"></i> FC</label>
        <select id="node-input-dataType">
            <option value="Coil">FC 1: Read Coils</option>
            <option value="Input">FC 2: Read Discrete Inputs</option>
            <option value="HoldingRegister">FC 3: Read Holding Registers</option>
            <option value="InputRegister">FC 4: Read Input Registers</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-adr"><i class="icon-home"></i> Address</label>
        <input type="text" id="node-input-adr" placeholder="0:65535">
    </div>
    <div class="form-row">
        <label for="node-input-quantity"><i class="icon-bookmark"></i> Quantity</label>
        <input type="text" id="node-input-quantity" placeholder="1-65535">
    </div>
    <!--<div class="form-row">
        <label for="node-input-rate"><i class="icon-bookmark"></i> Poll Rate (s)</label>
        <input type="number" id="node-input-rate" placeholder="1-65535">
    </div>-->
        <div class="form-row">
        <label for="node-input-server"><i class="icon-globe"></i> Server</label>
        <input type="text" id="node-input-server">
    </div>
</script>

<script type="text/x-red" data-help-name="modbustcp-no-pooling-read">
    <p>Modbus TCP client node.  Connects to a Modbus TCP server to read register values at a given poll rate.
    <h4>Function codes currently supported include:</h4>
        <ul>
          <li>FC 1: Read Coils</li>          
          <li>FC 2: Read Discrete Inputs</li>
          <li>FC 3: Read Holding Registers</li>
          <li>FC 4: Read Input Registers</li>
        </ul>  
     Choose a function code (FC) from the dropdown menu, select the coil/input/register start address (0:65535), and the quantity of coils/inputs/registers to be read from the start address.  Input a poll rate (greater than zero) in seconds to setup the poll rate.  Choose or edit the Modbus TCP server configuration.
     <br><br>
     Outputs an object called <b>msg</b> containing <b>msg.payload</b> with an array of the read coils/inputs/registers.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('modbustcp-no-pooling-server', {
        category: 'config',
        defaults: {
            host: {value: "127.0.0.1", required: true},
            port: {value: 502, required: true, validate: RED.validators.number()},
            unit_id: {value:1, required:true, validate: RED.validators.number()}            
        },
        label: function () {
            return "modbustcp-no-pooling@" + this.host + ":" + this.port;
        }
    });
</script>

<script type="text/javascript">
    RED.nodes.registerType('modbustcp-no-pooling-write', {
        category: 'output',
        color: '#E9967A',
        defaults: {
            name: {value: ""},
            dataType: {value: "", required: true},
            adr: {value: "", required: true, validate: RED.validators.number()},
            server: {value: "", type: "modbustcp-no-pooling-server"}
        },
        inputs: 1,
        outputs: 2,
        icon: "bridge.png",
        align: 'right',
        paletteLabel: "modbustcp-no-pooling",
        label: function () {
            return (this.name || "modbustcp-no-pooling");
        }
    });
</script>

<script type="text/javascript">
    RED.nodes.registerType('modbustcp-no-pooling-read', {
        category: 'input',
        color: '#E9967A',
        defaults: {
            name: {value: ""},
            dataType: {value: "", required: true},
            adr: {value: "", required: true, validate: RED.validators.number()},
            quantity: {value: "", required:true, validate: RED.validators.number()},  
            //rate: {value:"", required:true, validate:function(v) { return v > 0 } },         
            server: {value: "", type: "modbustcp-no-pooling-server"}
        },
        inputs: 1,
        outputs: 2,
        icon: "bridge.png",        
        paletteLabel: "modbustcp-no-pooling",
        label: function () {
            return (this.name || "modbustcp no pooling");
        }
    });
</script>