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ibaBM-eCAT Manual
Issue 1.15
7
2 Introduction
The device ibaBM-eCAT can be used for reading and recording of data transmitted over
an EtherCAT
®
bus with ibaPDA. For this purpose, the ibaBM-eCAT device is directly
integrated into the bus after the EtherCAT master.
Diagnostics and monitoring of the EtherCAT bus is also possible using the diagnostic
signals integrated in the device and the EtherCAT browser.
The settings for the device as well as the configuration of the data to be acquired are
performed in the I/O manager of the program ibaPDA. For this purpose a bidirectional
fiber optic connection to a PC is required, which is provided by a fiber optic card of the
ibaFOB-D familiy (e. g. ibaFOB-io-D).
The signal configuration can be retrieved from the EtherCAT configuration of the Ether-
CAT master. An export function in the EtherCAT master is required to generate a config-
uration file in XML format. This EtherCAT configuration file is imported into ibaPDA, al-
lowing the signals to be selected comfortably in the symbol browser of ibaPDA with a
mouse click.
If no EtherCAT configuration file is available, the values for the acquisition can be se-
lected directly from the EtherCAT bus using an EtherCAT browser.
The EtherCAT browser also provides diagnostic functions for the bus. For example, the
individual telegrams can be analyzed and the cycle and turnaround time can be dis-
played. A large number of diagnostic signals describing the EtherCAT bus are available
to be acquired in ibaPDA.
In addition, ibaBM-eCAT can be integrated as a slave into the EtherCAT bus configura-
tion and can then be addressed specifically by the EtherCAT master. In this way, user
data can be sent directly from the EtherCAT master to the bus for being recorded in
ibaPDA. Those signals are regarded as outputs from the EtherCAT bus’ view.
The following signal configurations are possible:

512 analog signals in each direction (input and output)
The data formats BYTE, SINT, WORD, INT, DWORD, DINT, REAL, FLOAT and
LREAL are supported.

512 digital signals in each direction (input and output).
Note when using as EtherCAT slave

The maximum number of analog and digital signals is limited to 512 each (outputs),
whereby the LREAL data format (64 bit) has to be count as 2 analog signals.

The overall data volume of the analog and the digital channels 0-7 is limited to
1360 Bytes.

The overall data volume of the analog and the digital channels 8-15 is limited to
1360 Bytes.
These restrictions mentioned above apply only, when the MTU (maximum transmission
unit) size is set to the maximum value of 1514 Bytes.