modbus-serial - npm Package Compare versions

Comparing version 3.4.5 to 3.4.6

package.json

		{
		"name": "modbus-serial",
		"version": "3.4.5",
		"version": "3.4.6",
		"description": "A pure JavaScript implemetation of MODBUS-RTU (and TCP) for NodeJS.",
		@@ -5,0 +5,0 @@ "main": "index.js",

ports/c701port.js

		@@ -18,3 +18,3 @@ 'use strict';
		var tmp;


		// calculate crc16
		@@ -32,3 +32,3 @@ for (var i = 0; i < length; i++) {
		}


		return crc;
		@@ -49,3 +49,3 @@ }
		var crcIn = buf.readUInt16LE(buf.length - 2);


		// check buffer unit-id, command and crc
		@@ -63,10 +63,10 @@ return (buf[0] == modbus._id &&
		this.ip = ip;


		// options
		if (typeof(options) == 'undefined') options = {};
		this.port = options.port \|\| C701_PORT; // C701 port


		// create a socket
		this._client = dgram.createSocket("udp4");


		// wait for answer
		@@ -76,12 +76,12 @@ this._client.on('message', function(data) {
		if (modbus.length < 6) return;


		// check message length
		if (data.length < (116 + modbus.length)) return;


		// check the C701 packet magic
		if (data.readUInt16LE(2) != 602) return;


		// get the serial data from the C701 packet
		var buffer = data.slice(data.length - modbus._length);


		//check the serial data
		@@ -123,7 +123,7 @@ if (checkData(modbus, buffer)) {
		}


		// remember current unit and command
		this._id = data[0];
		this._cmd = data[1];


		// calculate expected answer length
		@@ -142,2 +142,3 @@ switch (this._cmd) {
		case 5:
		case 6:
		case 16:
		@@ -151,3 +152,3 @@ this._length = 6 + 2;
		}


		// build C701 header
		@@ -161,6 +162,6 @@ var buffer = new Buffer(data.length + 116);
		buffer.writeUInt16LE(data.length, 104); // serial data length


		// add serial line data
		data.copy(buffer, 116);


		// send buffer to C701 UDP to serial bridge
		@@ -167,0 +168,0 @@ this._client.send(buffer, 0, buffer.length, this.port, this.ip);

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