Interference From Equipment; Wire Break Detection; Object Description And Parameterization - Beckhoff EL33-00 Series Documentation

5.8

Interference from equipment

When operating the EL33xx analog EtherCAT terminals, high frequency superimposed signals from
interfering devices (e.g. proportional valves, stepper motors or DC motor output stages) can be picked up by
the terminal. In order to guarantee interference-free operation, we recommend the use of separate power
supply units for the terminals and the interference-causing devices.
5.9

Wire break detection

The EL33xx-xxxx terminals provides a wire break detection of the connected thermocouple. A periodical
testing current of several µA will be given to the thermocouple for detection. No voltage measurement takes
place during test.
Due to particular cases, the testing current could have a disturbing effect, the wire break detection can be
disabled by CoE (object 0x80n0:0E [} 157], „Disable wire break detection") since following firmware versions:
EL3311 EL3312
Firmware Disabling not
possible
ESI/
Revision
5.10

Object description and parameterization

EtherCAT XML Device Description
The display matches that of the CoE objects from the EtherCAT XML Device Description. We rec-
ommend downloading the latest XML file from the download area of the Beckhoff website and in-
stalling it according to installation instructions.
Parameterization via the CoE list (CAN over EtherCAT)
The EtherCAT device is parameterized via the CoE - Online tab [} 127] (double-click on the respec-
tive object) or via the Process Data tab [} 124](allocation of PDOs). Please note the following gen-
eral CoE notes [} 39] when using/manipulating the CoE parameters:
- Keep a startup list if components have to be replaced
- Differentiation between online/offline dictionary, existence of current XML description
- use "CoE reload" for resetting changes
Introduction
The CoE overview contains objects for different intended applications:
• Objects required for parameterization during commissioning:
◦ Restore object [} 156] index 0x1011
◦ Configuration data [} 157] index 0x80n0
• Profile-specific objects:
◦ Configuration data (manufacturer-specific) [} 159] index 0x80nF
◦ Input data [} 159] index 0x60n0
◦ Output data [} 160] index 0x70n0
◦ Information and diagnostic data [} 160] index 0x80nE, 0xF000, 0xF008, 0xF010
• Standard objects [} 161]
The following section first describes the objects required for normal operation, followed by a complete
overview of missing objects.
EL33xx-00x0
EL3314 EL3314‑0002
04 01
0023 0016
Version: 4.2
EL3314‑0010 EL3314‑0090
EL3314‑0020
04 02
0021 0017
Commissioning
EL3318
03
0021
155