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Questions and answers on ECAT Measurement modules.
Note: To use high-speed measurement rates (sampling rates greater than 10 kHz) with CSM ECAT modules, the ECAT operating mode must be set to "10 kHz or packed" in the XCP gateway.
The maximum possible number of modules depends significantly on the selected sampling rate.
The following table applies if all modules of the measurement chain are configured at the same rate:
| Sampling Rate | Max. Number of Modules | Max. Number of Channels |
|---|---|---|
| 10 kHz | 25 × ECAT STGMM 6 | 150 channels |
| 25 × AD4 ECAT MM | 100 channels | |
| 100 kHz | 11 × AD4 ECAT MM | 44 channels |
| 1000 kHz | 1 × AD4 ECAT MM | 4 channels |
Mixed high speed measuring rates can only be used in combination with the XCP version 1.4 format. To do this, set the XCP compatibility accordingly in the CSMconfig program settings. The combination possibilities of modules with different sampling rates are almost unlimited. Therefore, the maximum number of modules for two combinations is listed in the following table as an example:
| Max. Number of Modules | Sampling Rate | Max. Number of Channels |
|---|---|---|
1 × AD4 ECAT MM | 1000 kHz | 4 channels |
| 100 kHz | 4 channels | |
| 10 kHz | 4 channels | |
| 1 × AD4 ECAT MM + 11 × AD4 ECAT MM | 1000 kHz | 4 channels |
| 10 kHz | 44 channels |
The CSMconfig configuration software provides feedback when configuring an ECAT measurement chain:
Overload configurations are easy to detect and prevent because a warning message appears if the permissible CAN bus load is exceeded.
The pin assignment of the corresponding signal socket for the ECAT modules can be found in the two documents "ECAT STGMM6" and "ECAT ADMM4 HS", which are located under Help at CSMconfig.
Standard PIN assignment of the ECAT signal socket:
Connector measuring input | Pin | Signal (unipolar sensor excitation ) | Signal (bipolar sensor excitation) | Description |
|---|---|---|---|---|
 LEMO 1B, 8pol | 1 | VIN - | VIN - | Input voltage, minus |
| 2 | VIN + | VIN + | Input voltage, plus | |
| 3 | VGND | VGND | Sensor supply ground | |
| 4 | VOUT + | VOUT + | Sensor supply output, plus | |
| 5 | - | VOUT - | Sensor supply output, minus | |
| 6 | - | - | reserved, do not connect | |
| 7 | TEDSGND Channel Shield | TEDSGND Channel Shield | TEDS Ground Shield for measurement signal | |
| 8 | TEDS Data | TEDS Data | Data line (TEDS) | |
| Housing | Cable Shield | Cable Shield | Outer Shield (housing) |
| Connector measuring input | Pin | Signal | Description |
|---|---|---|---|
| LEMO 1B, 8pol | 1 | VIN - | Input voltage, minus |
| 2 | VIN + | Input voltage, plus | |
| 3 | VOUT - | Bridge excitation voltage, ground | |
| 4 | VOUT + | Bridge excitation voltage, plus | |
| 5 | VSENSE - | Sense minus | |
| 6 | VSENSE + | Sense plus | |
| 7 | TEDSGND Channel Shield | TEDS Ground Shield for measurement signal | |
| 8 | TEDS Data | Data line (TEDS) | |
| Housing | Cable Shield | Outer Shield (housing) |
The following hardware is required for the synchronization of several ECAT measuring modules according to IEEE1588 (Precision Time Protocol):
If this option has not yet been activated for your gateway, please contact your personal customer advisor or sales@csm.de.
When using the CAN input on the XCP-Gateway, the following characteristic features must be obeyed:
Measurements with Ethernet measurement technology at the XCP gateway very quickly result in a large amount of data, which must be passed on to the measurement software by the gateway.
The following points should be observed in order to avoid measurement interruptions or loss of data during measurements:
There are numerous correlations between the different variables in STGMM. Since no automatic error detection and correction can be carried out in the channel list the parameters cannot be answered here.
This behaviour also applies to the exhaust gas modules of ECM and OUTMM.
In the firewall settings, ports 5555 and 5556 must be enabled in both directions inbound as well as outbound .
Background:
The bus load of an ECAT measuring chain can only be read in the report of the XCP-Gateway.
If you explicitly read out the module via the device dialog you can check a calibration date in the module. If no calibration information is displayed in this dialog, then none is stored in the module.
Note: Calibration information is not stored in the A2L file but only in the module. If an A2L file is loaded and a report is generated it does not contain any information about the calibration.
As of CSMconfig V8.10.1 ECAT measurement modules are also supported by CSMview but only with the Windows standard network connection. A connection via VX0312 and similar Vector interfaces which Windows does not detect as network adapter is not possible.
With the XCP gateway 4S pro there are two ways to synchronize:
If both mechanisms have been activated via CSMconfig, PTP always has the higher priority. In addition, the GPS signals are received and stored in the device. Thus a fast fallback to the GPS synchronization is possible if the PTP time master fails (approx. 10 seconds).
Due to the too high power consumption it is not possible to use a 120 Ohm bridge resistor at 10 V supply voltage. The user is informed of this fact when attempting such a configuration from Config 9.1.0.