Parameters for ES930: Digital Out Tab
The digital output channels can provide Digital Out, Pulse Out and PWM Out signals. Moreover, they can be used for controlling the power output stages. The power output stages, e.g., for controlling actuators such as valves or electric motors, are integrated in the module via half-bridge switches, which obviates the need for external signal conditioning. The assignment from a digital output channel to a power stage number is fix and can not be changed.
For each digital output channel, there is an additional signal with the suffix "Enable" (e.g. DO1_CH1_Enable), which is used for enabling or disabling the digital output channel.
Moreover, each pair of power stage channels can be enabled or disabled by a special enable signal (e.g. PS1_CH1_2_Enable). The enable signal is intended to be used in initialization processes as well as in exit / stop processes.
For performance reasons, make sure you do not use this signal to control the digital output channel!
In addition to that, the digital output channels can control the user LEDs U1 or U2 of the ES930.
The digital output channels and the corresponding power stage control are configured in the Digital Out tab.
Note |
Some parameters in this tab are underlaid orange. These operating parameters are applied to the device (and stored persistently) upon measurement start or chain initialization. Moreover, you can apply them explicitly by selecting Apply Operating Parameters from the context menu. |
Shows a consecutive number for each entry in the hardware configuration table.
You cannot edit this field.
The device settings can be stored both in a configuration file on the PC and in the device memory itself.
| The values displayed in this table row show the parameters settings that are stored in the configuration file on the PC. | ||
| The values in this table row show the parameter settings that are stored in the device itself.
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Use this checkbox to enable or disable this signal for further configuration steps.
Disabled signals will not be available in the Experiment Environment.
You can also use the context menu commands Enable All Channels and Disable All Channels to enable or disable all channels at once that are displayed on the selected tab.
This column shows the name of the hardware channel.
Note |
The hardware channel name cannot be edited. |
Select the active state of the signal.
High
Normal logic is applied, i.e. HIGH is interpreted as active state.
Low
Inverse logic is applied, i.e. LOW is interpreted as active and HIGH as inactive state.
Sets the mode of this channel (Digital Out, Pulse Out or PWM Out).
Shows the name of the output channel.
You can update digital output signals synchronously with other digital output signals. Signals that shall be updated synchronously must be assigned to the same update mode group.
Individual
The digital output signal is not updated synchronously with other digital output signals.
Group A / B / C
The digital output signal is assigned to the update mode group with the corresponding name.
Note
For each digital output signal in PWM mode belonging to the same update mode group, the value for Period Time should be the same.
The digital output signals in an update mode group must be aligned. The alignment must be the same for all members of an update mode group.
This setting can only be edited for PWM signals that are assigned to an update mode group in the Update Mode column.
inactive-active edge
The signals in the update mode group are aligned according to their inactive-active edge of the signals.
Center
The signals in the update mode group are center-aligned, i.e. the center of the active time of the signals is aligned.
In addition to the two ES930 system LEDs, the device provides 2 user configurable LEDs which can be assigned to a digital output channel. The LED is on whenever the signal mapped to the digital output channel is in active state.
Each LED can be assigned to only one digital output channel.
None
No LED is assigned.
U1
LED U1 is assigned to the digital output channel.
U2
LED U2 is assigned to the digital output channel.
Power output stages, e.g. for controlling actuators such as valves or electric motors, are integrated in the module via half-bridge switches. With this parameter, you can connect a half-bridge switch to the digital output channel.
None
There is no half-bridge switch connected to the corresponding digital output channel.
Half Bridgen
The selected half-bridge is connected to the digital output channel. If a half-bridge is selected, the corresponding power stage enable signal (e.g. PS1_CH3_4_Enable for half-bridge 4) is editable, and its output is set to Enabled.
With this parameter, you can define
- for digital output channels: whether the status of the signal on the digital output channel shall be active or inactive.
- for Enable signals: which digital output channels and power stages shall be enabled or disabled.
This setting also applies after power on of the device. This ensures that the actuators which are controlled by the ES930 device get adequate signals during the power on phase, even before initialization (e.g. by a rapid prototyping model) has been finished.
Settings for digital output channels
This parameter can only be set if the mode Dig Out is selected for the corresponding digital output channel.
active
The initial value of the digital output is active state (e.g. HIGH in normal logic).
inactive
The initial value of the digital output is inactive state (e.g. LOW in normal logic).
Settings for Enable signals for digital output and power stages
There are 2 types of Enable signals: signals for enabling / disabling the corresponding digital output channel (e.g. DO1_CH1_Enable), and signals for enabling / disabling power stages (e.g. PS1_CH1_2_Enable for the power stages 1 and 2). The signals for enabling / disabling power stages can only be edited if the half-bridge is selected for a digital output channel in the Power Stage column; one enable signal is always valid for 2 power stages.
The initial value can be set via the configuration program; during measurement or model execution, it is possible to enable or disable the channel / power stage by changing the output setting through the output control instance (e.g. ES910).
The enable signal is intended to be used in initialization processes as well as in exit / stop processes.
For performance reasons, make sure you do not use this signal to control the digital output channel!
Enabled
The corresponding channel / power stage is enabled.
Disabled
The corresponding channel / power stage is disabled and can not be used.
Defines the initial duration of the active time after power on of the module. The value can be set for the mode PWM Out.
For the mode Pulse Out, it is set to 0 and can not be edited.
Defines the initial duration of the period time. The value can be set for the mode PWM Out.
Enter the unit according to the signal to be measured.
The selected unit appears in the corresponding measure windows.
Enter any comment for that signal. The comment may be displayed along with the signal in some dialogs in the rapid prototyping or measurement and calibration tool used.
Note |
You can only enter a comment for signals that are selected in the Sel. column. |
See also
