Leuze electronic GmbH + Co. KG
MA 238
i
11
3.3.2 Connecting the power supply and the bus cable
Ideally, use the preassembled cables listed in Chapter 14.4.3 to connect the gateway to the power sup
-
ply via the PWR IN connection.
The preassembled cables listed in Chapter 14.5.4 are preferred for connecting the gateway to the field
-
bus via the HOST / BUS IN connection.
If applicable, use the BUS OUT connection if you would like to construct a network with linear topology.
3.4
Starting the device
Connect the +18 … 30VDC supply voltage (typ. +24VDC), the MA 238
i
starts up.
The PWR LED displays that it is ready for operation.
3.5
MA 238
i
on EtherCAT
3.5.1 Device description file
For EtherCAT, all process data and parameters are described in objects. The compilation of all process
data and parameters of the gateway - the object directory - is stored in a so-called ESI file (EtherCAT Slave
Information).
The ESI file contains all objects with index, sub-index, name, data type, default value, minimum and
maximum, and access possibilities. That means the ESI file describes the entire functionality of the
MA 238
i
.
The ESI file has the name MA 238
i
.xml and is available for download on the Leuze home page.
Vendor ID for the MA 238
i
The Vendor ID assigned by Leuze for the MA 238
i
is 121
h
= 289
d
.
Detailed information on the device description file and the object directory can be found in Chapter 12.5.3.
3.5.2 Device profile
The device profile describes the application parameters and the functional behavior of the MA 238
i
. For
EtherCAT, one does not specify individual device profiles for device classes. Instead, simple interfaces for
existing device profiles are provided.
3.5.3 Starting the MA 238
i
in the EtherCAT system
As is common for EtherCAT, the gateway runs through different states when starting up: "INIT", "PREOP",
"SAFEOP" and "OPERATIONAL".
Detailed information can be found in Chapter 12.4.
