Beckhoff EtherCAT EL6022 User Manual (English)

To Next Page

To Previous Page

Commissioning

EL600x, EL602x126 Version: 4.6

The following CoE settings are possible from object 0x8000 and are shown below in their default settings:

Fig.146: “CoE - Online, EL60x4 terminals” tab

Transfer rates

The terminal has a process image of 22bytes of user data. It possible to transmit or receive these 22bytes

every second cycle at the most.

The data is transferred from the terminal to the controller in the first cycle. In the second cycle, the controller

must acknowledge that it has accepted the data.

Therefore, if the cycle time is 10ms, 50 times 22bytes can be transmitted per second.

With a set data frame of 8N1, each transmitted byte consists of a start bit, eight data bits and a stop bit. This

is equivalent to 10bits per user byte.

With the above mentioned settings, a continuous data transfer rate of:

•  50[1/s]*22[Byte]*10[Bit] = 11000bps

can be achieved.

The next lower baud rate is 9600baud. Accordingly, continuous transfer at a maximum baud rate of 9600

can be secured with a cycle time of 10ms.

From firmware 11 the CoE 0x8000:1B supports with explicitBaudrate all baud rates 1000…115200baud.

When the baud rate is selected, the compatibility of the remote station to the set baud rate must be taken

into account.

If only low quantities of data are to be transmitted or received sporadically (e.g. bar code scanner) the baud

rate can also be set higher, or the cycle time can be enlarged.

If the controller cannot fetch the data quickly enough from the terminal, the data will be stored intermediately

in the internal buffer of the terminal. The buffer for received data has a size of 864bytes. If this is exhausted,

all further data will be lost.

Another scenario: the controller transfers significantly more data to the terminal than the latter can transmit.

For a ‘baud rate’ setting of 300 and a ‘data frame’ setting of 8N1, the terminal can only transmit 30bytes per

second. However, if more than these 30bytes per second are received, a 128byte transmit buffer will be

written to first in this case also. Once this is full, all further data will be lost.

Need help?

Do you have a question about the Beckhoff EtherCAT EL6022 and is the answer not in the manual?

Beckhoff EtherCAT EL6022 Specifications

General

Product Type	EtherCAT Terminal
Category	I/O Systems
Number of Channels	2
Interface	EtherCAT
Input Voltage	24 V DC (-15%/+20%)
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm
Approvals/markings	CE, UL, ATEX
Protection Class	IP20
Temperature Range	-25 to +60 °C
Electrical isolation	500 V (E-bus/signal voltage)
Current consumption field side	100 mA
Operating temperature	-25 to +60 °C
Storage temperature	-40 to +85 °C
Input Frequency	0...30 kHz
Relative Humidity	95%, non-condensing