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Last modified by writer on 2023/06/06 16:59
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1 You need next devises to control the spindle via Modbus:
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3 1. RS-485 adapter for connecting a frequency converter to a PC;
4 1. frequency converter (FC) with support for control via Modbus RTU.
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6 Modbus spindle control setting procedure:
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8 1. Set FC to the control mode using the Modbus RTU protocol (RS-485) and remember the COM port settings in FC (count of bits per second, data bits, parity and stop bits).
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11 |=(% style="text-align: center; width: 150px;" %)Function code|=(% style="text-align: center; width: 100px;" %)Value|=(% style="text-align: center;" %)Description
12 |(% style="width:150px" %)F0.00|(% style="width:100px" %)2|Frequency reference source - external data transfer
13 |(% style="width:150px" %)F0.02|(% style="width:100px" %)0002|Trigger channel selection - serial data port
14 |(% style="width:150px" %)F4.00|(% style="width:100px" %)0114|Data transfer settings - speed selection: 9600 bps, parity check, Modbus data transfer protocol
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17 2.Connect FC to the PC via the RS-485 adapter. You may need to install the driver for the RS-485 adapter for Windows.
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20 3. Verify that the adapter in RS-485 was detected by the operating system. Use the Windows Device Manager for this.
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23 [[image:wndws_Device_Manager.png||data-xwiki-image-style-alignment="center" height="400" width="567"]]
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25 Remember the COM port number of the device. It will be required in the next steps.
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28 4. Purchase the "[[MODBUS protocol support>>url:http://pumotix.ru/#soft||shape="rect"]]" option or activate a trial period for this option in the menu "Configuration" → "License Manager" → "Common".
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31 5. Enable and configure Modbus in the menu "Configuration" → "Modbus Setup".
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33 Create new Modbus-master. Number of COM port is RS-485 adapter number. The rest of the settings should be exactly the same as in the FC (in the screenshot, an example of a standard configuration of the COM port of Sunfar E500).
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35 [[image:COM_master_example.png||alt="master.png" data-xwiki-image-style-alignment="center" height="300" width="367"]]
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37 You need to add registers to control the FC and read statuses from FC. For example you need to configure registers named **SpindleMode**, **SpindleRPM** and **SpindleStatus** for Sunfar E500.
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39 We recommend using exactly these names, since in the future, registers will be accessed from background operations by their names.
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41 [[image:Modbus_Settings_example.png||data-xwiki-image-style-alignment="center" height="444" width="1000"]]
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43 {{success}}
44 Register numbers must be specified as decimal values.
45 {{/success}}
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47 {{warning}}
48 These values ​​can be indicated in HEX (hexadecimal) in the instructions for the frequency converter. For example, 0x1001, 0x1002
49 {{/warning}}
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52 6. Create new background operation (macro) through [[the macro manager>>doc:Руководство пользователя.Описание M-кодов.Управление макросами и фоновыми операциями.WebHome]].
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54 The main task of the background macro is to monitor the current state and spindle speed and send the values to the frequency converter via Modbus.
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56 An example of [[background operation>>doc:Руководство пользователя.Описание фоновых операций.Создание фоновой операции.WebHome]] **modbus_spindle.bm** for ModBus spindle control posted in attachment. This file must be added to background operations list.
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58 **[[Download background operation>>attach:modbus_spindle.zip]]**
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60 {{warning}}
61 Access to Modbus registers from macros is done by the name of the Modbus register case sensitive! For example, **SpindleRPM** and **SpindleRpm** are different registers.
62 {{/warning}}
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65 7. Enable the background operation. Make sure that the operation has started and is working properly. This will be indicated by the green indicator to the right of the operation name.
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68 [[image:Macros_Manager_wndw.png||data-xwiki-image-style-alignment="center" height="500" width="681"]]
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70 The spindle should now turn on and off if everything is configured correctly. The spindle speed accordingly must also change at the FC when it changing in PUMOTIX.