1. What is the maximum data length for the EtherCAT communication variable list, specifically for Inputs and Outputs?
This depends on the IO configuration. The EtherCAT
network can support up to over 60,000 slave devices, and each module may have
varying numbers of outputs and inputs.
2. How can
I use EtherCAT communication to read the status of a servo motor and display it
on the HMI？
You can create a uint variable in your PLC program and
bind it to the relevant parameters of the servo motor. Then, display this
variable on the HMI interface.
3. How do I modify the sync unit cycle in DC synchronization?
1.Create a new
task.
2. Use the synchronization unit grouping function to assign tasks to the modules that need modification.
3. Verify the modification results in the
module's EtherCAT → advance setting.
Note that when increasing the cycle for an
oversampling module, it is essential to confirm its capability to complete the
analog-to-digital conversion within that cycle.
For instance, the EL3702 has a single data
conversion time of approximately 10us. If you aim to refresh 100 sampling data
points during a single synchronized data acquisition, the calculation is 10us *
100 = 1000us, indicating that the synchronization cycle must be set to 1000us
or above.
4 How to
obtain the EtherCAT timestamp, specifically the DC System Time (DCsystime),
which represents the DC synchronization clock (64 bits)?
It is mandatory to have at least one module that supports DC functionality, such as the AX5000 series drive or a module like EL1259, otherwise, this tab will not be available.
5. Can
variables in EtherCAT communication be of the struct type?
Yes, variables can be of the struct type.
6. How to
restore the COE parameters of EL/EP series modules to their initial settings or
factory defaults?，64616F6C
Writing 0x64616F6C to directory 1011:01
will suffice.
What should I do if the module cannot enter
OP mode?
The ammeter reads 5mA, but why does the
EL3124 still display the maximum value of 32768? It's a four-wire sensor, and
I've confirmed that the sensor is functioning properly. The sensor and power
supply are connected to the 3124, and I've also verified the current using a
multimeter; everything seems fine. The range is set to 4-20mA.
Please try the wiring configuration shown
in the diagram below and test it again. If the issue persists, try resetting
the module to its factory defaults by assigning 64616F6C to 1011:01.
7. Introduction
to CU2508 Usage
I.How to Use CU2508?？
https://infosys.beckhoff.com/content/1033/cu2508/2129822219.html?id=4940984535521765770
II. Can the CU2508 replace the
functionality of the CU2208 and provide real-time communication with enhanced
capabilities?
These two are not products with identical
functions and cannot be substituted for each other.
First, manually add the Real-Time Ethernet
Adapter
Adapter selection for connecting to the
network interface card of the CU2508
In the Ports settings, change the Virtual
Port Count to 8, set the TCPIP Port to via EoE, and modify the Virtual Port
Selection via to EtherCAT Switch Link Protocol (ESL).
Then you can proceed to add the EtherCAT
network.
Select the port on the CU2508 for the
Adapter, then activate the configuration to make it effective. After activation
is complete, switch to configuration mode to scan for slaves connected to the
CU2508.
8. What
are the considerations when manually adding EtherCAT devices?
When manually adding EtherCAT devices,
attention should be paid to the "previous port" option. In the
following image, the EtherCAT drive is by default connected to the second
network port of the EK1100. However, if the drive is actually connected to the
expansion port of the EK1110, this will result in an activation error.
9 How does
the industrial PC equipped with an EtherCAT board interact with the EtherCAT
slave port information on CX5130?
It can be
directly scanned like any other standard EtherCAT slave.
Please refer
to the following document for detailed configuration steps.
10. Declaration
and Binding of Internal Variable Types for High-Function Modules in EL (Global
Data Type, Type System, External Types)
For the internal variables used in
EL high-function modules, there is a convenient feature introduced in TC3
version 4024 and later, specifically for analog and gateway modules (not
supported for regular I/O modules).：
11. What are the benefits for
customers when all Beckhoff controllers utilize the same IO system?
- It facilitates controller upgrades, resulting in cost savings.
- Spare parts management becomes more straightforward.
- Users can easily grasp and categorize the usage, enhancing
usability.
- Replacement is convenient, facilitating later system maintenance.