Version 220.127.116.11: This highly configurable Heidenhain device driver for CNCnetPDM enables you to acquire and output machine-, process- and quality data from machines with Heidenhain TNC 426, 430, 320, 620, 640 and iTNC 530 controllers, see adapted controllers. It also allows you to control your devices by its ability to set or change PLC data values and machine parameters.
For bidirectional communication between machines with Heidenhain controllers and your applications you can use our free Open Source Client (C-Sharp)
You can dynamically define your own set of items (up to 35) that can be enabled and disabled on a per machine basis by an INI file that is automatically created with reasonable default values for each machine configured. This INI file also allows you to define your own names for every tag.
This device driver requires the most recent version of CNCnetPDM and also works with a free license. However, in this mode CNCnetPDM uses only the first item (section ) of your machine INI file. Of course you can use any of the available commands for this section. With a valid license you are able to output the result of up to 35 functions per reading cycle, see licensing for details. TOP
Download the Heidenhain driver, extract all content of heidenhain_dll.zip into the folder where you have CNCnetPDM installed.
Edit CNCnetPDM.ini and add a new device as described in the quick start guide point 7. If you already have an entry in section [RS232] for a machine with a Heidenhain controller you can simply copy and paste this line and change its content.
Change the line as follows:
FIG 1: Configure Heidenhain device driver in CNCnetPDM.ini
For machines with Heidenhain controllers the following 3 parameters are important
Right to the IP Address of the controller (here 18.104.22.168) enter number 19000 (=port)
Right to the DNS Hostname of your machine (here AXA1012) enter a unique sequential number (here 1) between 1 and 58 for every Heidenhain controller connected to CNCnetPDM.
Every item has a description followed by its value. All descriptions and values are delimited by pipe ‘|’ symbols. This allows CNCnetPDM to create a database record or MTConnect output for every item. TOP
With an unmodified INI file the initial configured items are:
This device driver enables to dynamically add, group, enable or disable items and change their names. The INI file automatically created by the device driver for every machine contains sections that allow you to control its behavior.
Section [GENERAL] contains information about global parameters used by the driver on startup, please only change the value from iTNC530 = 0 to 1 if you’re using an iTNC530 or TNC320, TNC620 or TNC640 controller! Commands defines the number of commands you’d like to execute, maximum value = 35. Entry ‘Legacy PLC’ allows you to convert PLC byte, word or dword output from older controllers like TNC426 or TNC430 to a proper format. Please set Legacy PLC = 1 in case the output differs from the values you see at the controller.
Section [MARKERS] contains addresses of PLC markers that are automatically used to identify the operation mode and program status of your machine if the controller does not support high-level commands to acquire this information. Typically used with older TNC426 and 430 controllers.
Items you query are organized in numeric sections e.g. . Every section contains entries where you can define names and parameters for a specific item.
Description of the numeric sections:
Section identifier, numbers starting with 2 are queried
If you set this to 0 the command is not executed to read data from the device. Commands for writing data must not be set to 1!
A short name (max 5 characters) to describe the item e.g. STATN for status number
A comment that describes the command (optional)
Command to be executed e.g. cnc_oeestatus for the command group that contains running status. To change a command select an available command group, copy it and paste it into the INI file.
Input parameter 1
For some commands input parameters can be used to set an input parameter (PLC), control output formatting e.g. program name with or without path or a divisor for an output value, see the command description.
Input parameter 2
Necessary for some commands, usually an optional divisor for PLC output (default = -1)
Some command groups have sub-commands that enable you to define a specific item to be output by the driver e.g. statenumber from cnc_oeestate outputs the device state.
You can output data to 3 sections that may contain up to 256 characters. 1 goes to section ‘O’, 2 to ‘A’ and 3 to ‘F’. If data in one section exceeds the maximum length you can send items to a different section. Make sure you have entries CollectOrders, CollectFeeder and CollectQuality enabled (=1) in CNCnetPDM.ini.
FIG 4: Description of a device INI file section
Note: To change commands, switch items on or off or alter its name while CNCnetPDM is running open the INI file with a text editor such as notepad, make the desired changes and save the file. To apply the changes immediately you can click on the machine in CNCnetControl on the left side followed by clicking buttons ‘Close’ and ‘Open’ above the section ‘Devices’. TOP
Below you can find commands and output items that can be used with this driver.
Important note: Almost all of the items with note ‘iTNC530 only’ are also supported by newer controllers like TNC 320, 620 and 640. For TNC 426 and 430 most items can be acquired by using plcmarker, plcbyte, plcword or plcdword commands. Please contact us for detailed instructions.
Numeric OEE state of the device (2 = producing, 3 = manual, 4 = interrupted, 5 = error)
State of the device as text (producing, manual, interrupted, error)
Numeric running mode of the controller (0 = Manual, 1 = MDI, 2 = Pass Reference, 3 = Single Step, 4 = Automatic, 5 = Undefined)
Selected program, if you set ‘Input parameter 1’ to 1 only the program name without path is output
Active (running) program, if you set ‘Input parameter 1’ to 1 only the program name without path is output
Actual program block executed
Error class if any (iTNC530 only)
Error group if any (iTNC530 only)
Error number if any (iTNC530 only)
Error text if any (iTNC530 only)
Tool number (iTNC530 only)
Tool index (iTNC530 only)
Tool axis (iTNC530 only)
Tool length (iTNC530 only)
Tool radius (iTNC530 only)
Feed override (percent)
Speed override (percent)
Rapid override (percent)
Position of axes. By setting ‘Input parameter 1’ to a positive value you can limit the number of axes that should be output (default 5)
Cutter position. By setting ‘Input parameter 1’ to a positive value you can limit the number of cutters that should be output (default 5)
PLC marker value (0 or 1). ‘Input parameter 1’ defines the PLC address
PLC byte value. ‘Input parameter 1’ defines the PLC address. ‘Input parameter 2’ can be used if the output value has to be divided, use 1 for no division or -1 to revert from negative to positive value
Reads a machine parameter e.g. MP3515. ‘Input parameter 1’ defines the parameter to be read, you can prefix the parameter number with MP
Output item = item to be queried (iTNC 530 only). In this example a value from the tool table is read
Command for writing PLC marker values (0 or 1). PLC address and value to be written have to be contained in the command from your application
Command for writing PLC byte values, PLC address and value from your application.
Command for writing PLC word values, PLC address and value from your application. PLC address has to be divisible by 2!
Command for writing PLC dword values, PLC address and value from your application. PLC address has to be divisible by 4!
Write value for a machine parameter to the device. Machine parameter name, desired value and flag have to be contained in the input command
FIG 5: Description of available command groups and output items TOP
To quickly test and build a working INI file for your controller you can use our tool devicedrivertester. If used with this driver the program creates INI file heidenhain.ini. To use this file for a machine defined in CNCnetPDM.ini you can simply append an underscore and the machine number e.g. heidenhain_1001.ini for device number 1001.
If you want to add additional items (up to 35 in total) first adjust the number of commands in section [GENERAL]. Then, copy and paste the last numeric section and adjust the section number and its content. Do NOT set writing commands to ‘Active = 1’! TOP
TEST WRITING OPERATIONS
It is highly recommended to test any writing operation to Heidenhain controllers before using them in a production environment with the device driver. For verification that you can access and write PLC data or machine parameters you should first use the GUI tool Heidenhain PLCRW. To test with the device driver proceed as follows:
In CNCnetControl select the device at the left side
After clicking on button [Cmd], an additional dialog opens.
Select the command number followed by 3 items delimited by pipe symbols ‘|’. If you’re using the standard device INI file you can enter:
Sets Marker value at address 1 to 1
Sets Byte value at address 1 to 1
Sets Word value at address 1 to 1
Sets Dword value at address 24 to 1
Sets parameter value of MP3515 to 5001
FIG 6: Format of writing commands
The first item in input is the PLC address or machine parameter followed by the desired value and a flag. Flag only has an effect on machine parameters. Possible values: 0 = persistent, 1 = temporary, 2 = persistent on reset.
To verify the result you can either define sections to read these values in your machine INI file or check with Heidenhain PLCRW. TOP
The device driver writes a log file entry for any communication issue to the log file of the device. The file can be found in subdirectory \log of your CNCnetPDM program folder. The file format for the log file is log_ + device number + _ + date.txt. Please check this file first if you observe an issue. Deactivate commands with issues by setting them to ‘Active = 0’.
If the machine shows a red icon, state disconnected and you get just output E = 0 the machine is not reachable at all. This has nothing to do with the device driver, it’s a network issue, DNS Hostname or IP Address is wrong.
If the machine shows a green icon, state connected but you just get output E = 1 the machine is reachable but the controller does not respond to commands, check your controller setup and the parameters used in CNCnetPDM.ini (esp. port number).Please use the tool HeidenhainData to check if the machine replies to commands.
If you do get numeric device states but not any of the preconfigured items please make sure that entries CollectOrders, CollectQuality and CollectFeeder are set to 1 in section [General] of CNCnetPDM.ini.
If specific items are not acquired check first with HeidenhainData that you get output. Also make sure that the numeric section of the item in the device drivers INI file is activated and has an entry for ‘Name’, inactive or items with empty names are not acquired. Also check that you didn’t misspell entries for command and output item in your device driver INI file. TOP
If you already have a previous version of the driver installed and would like to upgrade to the most recent version proceed as follows:
Stop any CNCnetPDM background service or foreground program that uses the device driver
Extract all content of heidenhain_dll.zip into the folder where you have CNCnetPDM installed, overwrite the existing files
Delete all heidenhain_NNNN.dll (NNNN = machine number) files. If you already have created adapted INI files for specific devices do NOT delete the heidenhain_NNNN.ini files.
After restarting CNCnetPDM upgraded device driver versions for all machines are automatically created. TOP