Real measurement

In the Real measurement mode, we can see all the devices that are connected to our system.

All Dewesoft devices (SIRIUS, DEWE-43, KRYPTON, SBOX, ECAT-SYNC JUNCTION) are automatically recognized, but there are some devices, that can’t be connected automatically.

On the left side of the window, the structure of the system is shown. On the SBOX system, we connected USB devices (SIRIUS, DEWE-43) and EtherCAT devices (KRYPTON, ECAT-SYNC JUNCTION).

With the plus button, we add devices that are not recognized automatically and with the minus button, we can remove them.

When adding a new device, we can select from Standard devices (Camera, CAN, Dewesoft NET, GPS)

or from Legacy devices (CAN, GPS).

If we have multiple slices, we can rearrange their sort order with the up and down buttons.

With the refresh button, we scan the whole structure of a system again.

On the right side of the window, the properties of devices are shown and some settings can also be changed.

SBOX system

We can see the devices information (serial number, hardware, and firmware version).

If the SBOX system is used, the remote mode can be used to turn the SBOX on or off from the remote distance.

The connector for power supply on SBOX has three pins, one is for voltage, one for a ground connection and one is a remote signal.

• Disabled - If the remote mode is disabled, SBOX can only be turned on or off by pressing the power button on the device.
• Remote power ON on external pin - The SBOX can be remotely turned on. When the voltage signal comes to pin for remote, the SBOX is turned on.
• Remote power ON and OFF on external pin - The SBOX can be remotely turned on or off. If the SBOX is off and the signal comes, it will be turned on. If the SBOX is on and the signal comes, it will be turned off.

SIRIUS

In this case, we have connected multiple Dewesoft DAQ devices. If we select the DAQ device and click on it, we see the devices information (device number, serial number, hardware and firmware version, temperature).

Bridge amplifier offset shows us the initial amplifier offset. Sirius connects the input short on and the offset is measured.

With the button Reset offsets, we clear the initial amplifier bridge offsets.

Fan speed can be set only to Sirius devices. We can choose from default, minimum or maximum. The custom speed is defined with the percentage of the maximum fan speed.

We can change the CAN baud rate and CAN operation mode (Read only or Read/Write/Acknowledge).

Watchdog timer

Dewesoft is quite often used in many critical applications where the control system depends on the data acquisition system or the data acquisition system outputs alarms used to warn the user or switch off the test. In such cases, it is important to know the operation state of the data acquisition system. Watchdog is a safety feature to switch on the digital output when the system is in operation and switches off if the data acquisition system becomes unresponsive. A timeout can be set to delay switching off the watchdog. This feature can be used with any Sirius slice having Digital output. For SIRIUS 8xSTGM DB special watchdog hardware (DS-WDT) is available which has four relay outputs for directly switching on and off. Relays can be programmed as the Watchdog or standard alarm/manual outputs.

The Watchdog functionality enables an external way to monitor the behavior of the Dewesoft software. To be able to use the watchdog a Sirius slice with a Digital out is needed or when using a single slice, the Sync signals can also be used. The slice must be connected in order to set up the watchdog.

Once enabled, the output selection can be made. Default settings are:

• Digital output: Ctrl DO Clk
• Timeout: 2 sec
• Operation mode: Active in measure mode

Digital output menu selects on which digital output the Watchdog functionality is enabled. When using the Watchdog module, which is connected to the Sirius slice via a 25 pin cable, this selector should be set to Ctrl DO 1.

The timeout value specifies the time in which the Dewesoft must reset the Watchdog.

Operation mode can be selected from:

• Active in measure mode - The Watchdog functionality is active while Dewesoft is in measure mode.
• Active in setup and measure mode - The Watchdog functionality is active while Dewesoft is in channel setup and while in measure mode.
• Always active - The Watchdog in always active.

Digital output menu selects on which digital output the Watchdog functionality is enabled. When using the Watchdog module, which is connected to the Sirius slice via a 25 pin cable, this selector should be set to Ctrl DO 1. The Watchdog can be only mapped to one digital output!

The Watchdog behavior is as follows:

• When the slice is powered up, the module is in the Alarm state (Watchdog LED is RED). The slice does not retain any information about the Watchdog after power loss!
• When Dewesoft is started and no Watchdog functionality was set for the slice in a previous session the LED light is RED.
• When the Watchdog functionality is set, the following occurs:
  • Active in Ch. Setup is not set: The watchdog LED light is RED until the user switches to Measure mode; then the Watchdog LED is GREEN. When switching back to channel setup mode the LEDturns back to RED.
  • Active in Ch. Setup is set: The Watchdog LED light is GREEN in both Channel setup and in Measure mode.
• When disconnecting the slice from USB or turning off Dewesoft software the Watchdog will trigger (after the present time in case of disconnect or computer/software freeze or immediately when exiting Dewesoft). The LED light will turn RED.

The Watchdog module itself has 3 additional outputs which are user controlled via the A/D module. The respective A/D outputs are CTRL DO 2, CTRL DO 3 and CTRL DO 4.

All four outputs are relay based with a possibility to connect with a NO (Normally open) or NC (Normally closed) position.

When the Watchdog has triggered or upon power up the Watchdog relay is not energized – meaning that the NO position is OPEN and the NC position is SHORTED.

DEWE-43

In DEWE-43 settings, we can change the CAN baud rate and CAN operation mode (Read only or Read/Write/Acknowledge). We can also see its name of the device, serial number, hardware version, and firmware version.

ECAT-SYNC JUNCTION

ECAT-SYNC JUNCTION works in the same way as other Dewesoft USB devices. It is automatically recognized within Dewesoft X software. By default, ECAT-SYNC JUNCTION will be set up to synchronize KRYPTON EtherCAT® and SIRIUS USB. The serial number and the firmware version can be seen and also updated.

KRYPTON

Under KRYPTON section, serial number, hardware, and firmware versions are seen. Also, the firmware upgrade can be done.

CHANNEL SETUP SAMPLE RATE

Channel setup sample rate defines the sample rate of channel setup. Channel setup sample rate does not run with the full acquisition sample rate but with the reduced one.

Let’s take a look at a signal from a function generator (simple sine wave with 100 Hz). First, we let the channel setup sample rate at the default value, 20 s/s/ch.

When we enter the setup of the selected channel, we see the preview of the scope nicely.

Then we change the channel setup sample rate to 10 s/s/ch.

Now, the preview of the channel does not show the proper form of the signal, because it is sampled with the lower frequency than it should be.

real measurement