# Comlynx to Modbus TCP protocol conversion

## Description

This article describes WCC Lite configuration steps to enable Comlynx protocol conversion to Modbus TCP

[![image-1601994154261.png](https://wiki.elseta.com/uploads/images/gallery/2020-10/scaled-1680-/image-1601994154261.png)](https://wiki.elseta.com/uploads/images/gallery/2020-10/image-1601994154261.png)

<iframe allowfullscreen="allowfullscreen" frameborder="0" height="315" src="//www.youtube.com/embed/mTSQG8vIQCA" width="560"></iframe>

## First steps

<span class="tlid-translation translation" lang="en"><span class="" title="">Before you begin, make sure you have completed all physical installation work according to the manufacturer's installation instructions.   
</span></span>

<span class="tlid-translation translation" lang="en"><span class="" title="">Set up your computer and connect Ethernet cable to WCC Lite ETH0 port. Login with default credentials and setup basic required settings (name, network, users, etc. ). </span></span>You can find configuration tutorials in [How to](https://wiki.elseta.com/books/how-to) articles.

After setup, download configuration template from device (Protocol Hub → Configuration → Template configuration Download)  
Or download configuration example from this article [Files](#h_52402507611602751244400).

To prepare configuration fill information in both - [Devices](#bkmrk-configure-devices) and [Signals](#bkmrk-configure-signals) sheets:

## Configure devices

Add connected inverter with ComLynx protocol required information:

<table id="bkmrk-name-device_alias-en" style="height: 77px; width: 811px; border-style: solid;" width="1229"><tbody><tr><td style="width: 72px;">**name**</td><td style="width: 113px;">**device\_alias**</td><td style="width: 65px;">**enable**</td><td style="width: 77px;">**protocol**</td><td style="width: 75px;">**timeout\_ms**</td><td style="width: 63px;">**device**</td><td style="width: 79px;">**baudrate**</td><td style="width: 55px;">**databits**</td><td style="width: 50px;">**stopbits**</td><td style="width: 66px;">**parity**</td><td style="width: 96px;">**flowcontrol**</td></tr><tr><td style="width: 72px;">Inverter</td><td style="width: 113px;">Danfoss\_INV\_1</td><td style="width: 65px;">1</td><td style="width: 77px;">ComLynx</td><td style="width: 75px;">2000000</td><td style="width: 63px;">PORT1</td><td style="width: 79px;">19200</td><td style="width: 55px;">8</td><td style="width: 50px;">1</td><td style="width: 66px;">none</td><td style="width: 96px;">none</td></tr></tbody></table>

<table id="bkmrk-scan_rate_ms-poll_re" style="height: 57px; width: 468px; border-style: solid;"><tbody><tr><td style="width: 119.556px;">**scan\_rate\_ms**</td><td style="width: 96.625px;">**retry\_count**</td><td style="width: 77.6806px;">**network**</td><td style="width: 71.5139px;">**subnet**</td><td style="width: 101.736px;">**address**</td></tr><tr><td style="width: 119.556px;">60000</td><td style="width: 96.625px;">3</td><td style="width: 77.6806px;">3</td><td style="width: 71.5139px;">2</td><td style="width: 101.736px;">163</td></tr></tbody></table>

Add Modbus Slave required information:

<table id="bkmrk-name-description-dev" style="height: 58px; width: 752px; border-style: solid;" width="1142"><tbody><tr style="height: 29px;"><td style="width: 153.056px; height: 29px;">**name**</td><td style="width: 130.083px; height: 29px;">**device\_alias**</td><td style="width: 100.569px; height: 29px;">**enable**</td><td style="width: 154.153px; height: 29px;">**protocol**</td><td style="width: 94.0139px; height: 29px;">**timeout\_ms**</td><td style="width: 119.236px;">**bind\_address**</td></tr><tr style="height: 29px;"><td style="width: 153.056px; height: 29px;">Modbus Slave</td><td style="width: 130.083px; height: 29px;">Modbus\_slave</td><td style="width: 100.569px; height: 29px;">1</td><td style="width: 154.153px; height: 29px;">Modbus TCP Slave</td><td style="width: 94.0139px; height: 29px;">500000</td><td style="width: 119.236px;">0.0.0.0</td></tr></tbody></table>

<table id="bkmrk-bind_address-host-po" style="height: 54px; width: 287px; border-style: solid;"><tbody><tr><td style="width: 122px;">**host**</td><td style="width: 67px;">**port**</td><td style="width: 98px;">**mode**</td></tr><tr><td style="width: 122px;">192.168.1.1</td><td style="width: 67px;">502</td><td style="width: 98px;">tcp</td></tr></tbody></table>

You can find more options and descriptions of the settings in [Device configuration](https://wiki.elseta.com/books/excel-configuration/page/device-configuration "Device configuration") article.

## Configure signals

Add connected inverter signals information. Use inverter manual for information and addresses (**tag\_job\_todo).**

<table id="bkmrk-%C2%A0signal_name%C2%A0-%C2%A0devic" style="height: 121px; width: 879px;" width="864"><tbody><tr style="height: 46px;"><td style="width: 105px; height: 46px;"> **signal\_name** </td><td style="width: 114px; height: 46px;"> **device\_alias** </td><td style="width: 96px; height: 46px;"> **signal\_alias** </td><td style="width: 68px; height: 46px;"> **enable** </td><td style="width: 83px; height: 46px;"> **tag\_type** </td><td style="width: 55px; height: 46px;"> **units** </td><td style="width: 77px; height: 46px;"> **multiply** </td><td style="width: 83px; height: 46px;"> **job\_todo** </td><td style="width: 87px; height: 46px;">**job\_todo** </td><td style="width: 111px; height: 46px;"> **number\_type** </td></tr><tr style="height: 46px;"><td style="width: 105px; height: 46px;">Total energy production</td><td style="width: 114px; height: 46px;">Danfoss\_INV\_1</td><td style="width: 96px; height: 46px;">Danfoss\_1</td><td style="width: 68px; height: 46px;">1</td><td style="width: 83px; height: 46px;">Normal</td><td style="width: 55px; height: 46px;">kWh</td><td style="width: 77px; height: 46px;">0,001</td><td style="width: 83px; height: 46px;">08|01|02</td><td style="width: 87px; height: 46px;">NA</td><td style="width: 111px; height: 46px;">UNSIGNED16</td></tr><tr style="height: 29px;"><td style="width: 105px; height: 29px;">...</td><td style="width: 114px; height: 29px;">  
</td><td style="width: 96px; height: 29px;">  
</td><td style="width: 68px; height: 29px;">  
</td><td style="width: 83px; height: 29px;">  
</td><td style="width: 55px; height: 29px;">  
</td><td style="width: 77px; height: 29px;">  
</td><td style="width: 83px; height: 29px;">  
</td><td style="width: 87px; height: 29px;">  
</td><td style="width: 111px; height: 29px;">  
</td></tr></tbody></table>

Where in **job\_todo** *08* is "module id", *01* - "Index", *02* - "SubIndex" of measurements.  
**number\_type** can be found in manual as Data type id converted to data type as follow:

<table class="NormalTable" id="bkmrk-0x0%3A-not-defined--no" style="height: 335px;" width="352"><tbody><tr><td style="width: 351px;"><span class="fontstyle2">0x0: Not defined- Not supported  
0x1: Boolean  
0x2: Signed 8  
0x3: Signed 16  
0x4: Signed 32  
0x5: Unsigned 8  
0x6: Unsigned 16  
0x7: Unsigned 32  
0x8: Float  
0x9: Visible string - Not supported  
0xA: Packed bytes - Not supported  
</span>

<span class="fontstyle0">0xB: Packed words <span class="fontstyle2">- Not supported</span>  
0xC - 0xF: Reserved<span class="fontstyle2">- Not supported</span></span>

</td></tr></tbody></table>

  
Add Modbus slave signals information

<table id="bkmrk-%C2%A0signal_name%C2%A0-%C2%A0devic-0" style="width: 868px;" width="1128"><tbody><tr><td style="width: 105px;"> **signal\_name** </td><td style="width: 106px;"> **device\_alias** </td><td style="width: 99px;"> **signal\_alias** </td><td style="width: 125px;"> **source\_device\_alias** </td><td style="width: 117px;"> **source\_signal\_alias** </td><td style="width: 75px;"> **enable** </td><td style="width: 81px;"> **tag\_type** </td><td style="width: 65px;"> **units** </td><td style="width: 95px;"> **multiply** </td></tr><tr><td style="width: 105px;">Total energy production</td><td style="width: 106px;">Modbus\_slave</td><td style="width: 99px;">Modbus\_1</td><td style="width: 125px;">Danfoss\_INV\_1</td><td style="width: 117px;">Danfoss\_1</td><td style="width: 75px;">1</td><td style="width: 81px;">Normal</td><td style="width: 65px;">kWh</td><td style="width: 95px;">1.0</td></tr></tbody></table>

<table id="bkmrk-%C2%A0common_address%C2%A0-%C2%A0fu" style="width: 605px;"><tbody><tr><td style="width: 145px;"> **common\_address** </td><td style="width: 105px;"> **function** </td><td style="width: 103px;"> **info\_address** </td><td style="width: 148px;"> **number\_type** </td><td style="width: 231px;"> **size** </td></tr><tr><td style="width: 145px;">1</td><td style="width: 105px;">3</td><td style="width: 103px;">1</td><td style="width: 148px;">UNSIGNED16</td><td style="width: 231px;">1</td></tr></tbody></table>

Use measurements from inverter as a source to be forwarded.

You can find more options and descriptions of the settings in [Signals sheet](https://wiki.elseta.com/books/excel-configuration/page/signals-sheet "Signals sheet") article.

## Upload configuration

After configuring all devices and signals, follow these steps to check and upload configuration using WCC Excel Utility:

1. [Download ](https://wiki.elseta.com/books/wcclite-downloads/page/firmware-and-tools)and run WCC Excel Utility;
2. Select Excel file from your computer and click *Convert*;
3. Check if no events in red color occur. If so, edit Excel file according to event text and repeat Step 2;
4. Enter Host and credentials of WCC Lite and click *Upload configuration.*

Another method to upload the configuration is via the web interface:

1. Access the WCC Lite interface via your browser:  
    [![image-1733135286847.png](https://wiki.elseta.com/uploads/images/gallery/2024-12/scaled-1680-/image-1733135286847.png)](https://wiki.elseta.com/uploads/images/gallery/2024-12/image-1733135286847.png)
2. Upload the Excel configuration:  
      
    [![image-1733135363443.png](https://wiki.elseta.com/uploads/images/gallery/2024-12/scaled-1680-/image-1733135363443.png)](https://wiki.elseta.com/uploads/images/gallery/2024-12/image-1733135363443.png)
3. After a successful upload, the configuration will appear under the **DOWNLOAD CONFIGURATION** tab:  
      
    [![image-1733135451404.png](https://wiki.elseta.com/uploads/images/gallery/2024-12/scaled-1680-/image-1733135451404.png)](https://wiki.elseta.com/uploads/images/gallery/2024-12/image-1733135451404.png)
4. If any errors occur during the upload, follow the error messages, fix them along Excel utility guidelines.

## Files

1. Danfoss inverter manual - Accessing Inverter Parameters via RS485 using the ComLynx protocol [Download](https://wiki.elseta.com/attachments/4)
2. WCC Excel Utility [Download](https://wiki.elseta.com/books/wcclite-downloads/page/firmware-and-tools)
3. Example of configuration file [Download](https://wiki.elseta.com/attachments/629)