The Recording > Channel Selection... command opens a dialog box for selecting the desired channels. TNCscope determines the available channel types, as well as any axis or PLC operand types.
Note that TNCscope does not contain any information about the possible recording channels or axes. These differ depending on the control and NC version and are only queried by the control when the connection is established.
If no file is open, a new diagram window is opened automatically.
Channel types
Depending on the control, the available channel types are available here.
You can use the filtersettings to restrict this list. Enter a string which the channel type name must include or select one or more of the check boxes.
Axes
If an axis needs to be entered for a channel type, you may select it here.
Parameters
Debug channels usually require additional settings, which are displayed here as required. These additional parameters are supported from NCK milestone 15 onwards.
You can switch the axis for multiple channels at the same time. Mark one or more channels from the list of selected channels, and then click the desired axis.
PLC Channels
If you selected a PLC channel from the channel types, this indicates which operand types are valid. Enter the operand.
Operand
Enter the name of the PLC operand. You can enter operands absolutely, with their type and address (e.g., W74), as well as symbolically with the symbol name. Use the selection list to enter symbolic names. The selection list contains all symbols of the selected module from the specified map file. Enter a substring to filter long lists. The list then only contains operands that contain this substring.
Note that the correct address can be determined only if the current map file and - for local operands - the PLC module are specified.
Module
The PLC module must be entered here if you want to enter symbolic local operands. The list contains all modules from the given map file. You can also enter a substring of the module name. The module will be selected as soon there is only one possibility left based on the entered substring.
PLC/SPLC map files
Normally the map files are correctly preset. However, if you want to set alternate map files, select the Alternate map files check box. This may be necessary if you do not have source code files on the control and therefore the map files do not contain PLC symbols. Transfer map files with symbols to the control and enter them here.
If you are using alternate map files, make sure that the map files are up-to-date and match the active PLC program.
Recording
After you have defined a channel completely, add it to the list of selected channels with the Add button. As an alternative you can double-click the channel to add it to the list of channel types or axes.
Use the Remove button or <Del> to remove the highlighted channels from the list.
You can change the order of the selected channels by using the small arrow buttons below the list or by pressing the up/down arrow keys while holding down the Alt key.
Starting with NCK milestone 15, the fundamental frequency and the effective sampling rate of the individual channels are also displayed.
<Name> (<fundamental frequency> | <effective sampling rate>) in microseconds.
Please note that the number of preselected channels is not limited. You can select any number of channels during preselection. However, the control only supports a limited number of channels. You must hide the surplus channels before recording.