Function description
Operating Manual PMI 6 primo
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}
When changing the variable content, any programs can be started if the bus variables
have been defined as trigger variables.
INFORMATION
The GSD file is available on the supplied CD-ROM. The name of the de-
scription file can be found in the chapter
Technical details [
69]
.
INFORMATION
Please also refer to the installation guidelines published by the PROFIBUS
User Group.
4.4.4
Ethernet
The Gigabit Ethernet interface (X8) connects the PMI 6 primo to a programming device for
configuration, programming and commissioning. The interface can also be used to connect
a visualisation device.
The Gigabit Ethernet interface is compatible with 1000Base-T (Standard Gigabit Ethernet).
Data exchange is possible via Modbus/TCP.
4.4.5
EtherCAT
EtherCAT uses the Ethernet Standard (IEEE 802.3) without modifications.
The PMI 6 primo does not require a setting (CD command) to use the EtherCAT master as
a drive bus.
To do this, a CODESYS project has to be active (Boot project), where all the EtherCAT
devices are configured.
Before the CODESYS project starts, all the devices must be operational so that they are
detected by the EtherCAT master.
The address assignment of the network subscribers is performed automatically in the se-
quence of the physical arrangement. The sequence of the inserted devices in the device
tree with the physical arrangement has to match.
Please note the following during operation:
}
The device sequence may no longer be modified.
}
It is not permitted to add or remove devices.
The PMI 6 primo is an EtherCAT master which is the subscriber in the segment that can
actively send an EtherCAT frame, all the other subscribers only forward the frames. This
prevents unforeseeable delays and it guarantees real-time capability.
Bit errors in the transmission are reliably detected in the evaluation of CRC check sums.
Rare interferences can be detected and localised with EtherCAT even if the interference
does not influence the functionality of the machine.
