Assignment of the connections

This chapter describes the assignment of the EP9224-0037 connectors to their representation in TwinCAT. This assignment is required to correctly map an EtherCAT network in TwinCAT "offline" configuration.

An EP9224-0037 is represented by two I/O modules in the TwinCAT I/O tree:

Assignment of the connections 1:

Each I/O module has four ports. Some ports represent connectors, while others represent internal interfaces. The following illustration shows the assignment of the connectors to the ports of the I/O modules in TwinCAT:

Assignment of the connections 2:

Type

EP9224-0037

TwinCAT

Connector

I/O module

Port

EtherCAT P output

X52

Assignment of the connections 3: EP9224-1037

D

EtherCAT P output

X53

B

EtherCAT P output

X54

C

EtherCAT P output

X55

Assignment of the connections 4: EP9224-0037

B

EtherCAT input

X70

A

EtherCAT output

X71

C

The following page contains examples of how to use the table.

Example: Appending an EtherCAT P Box to EP9224-0037

Requirement: an EP9224-0037 is appended in the IO tree in TwinCAT.
1. Decide which connector of the EP9224-0037 to connect the EtherCAT P Box to.
(e.g. to X54)
2. Determine the corresponding IO module and port with the help of the table.
(e.g. EP9224-1037, Port C)
3. Right-click on the IO module determined in the IO tree.
(e.g. EP9224-1037)
4. Click on the menu item Add new Item…
5. In the window that appears, select the EtherCAT P Box to be appended and the port determined.
(e.g. EPP1008-0001, Port C)
Assignment of the connections 5:
6. Click OK
Result: The box was appended in the correct place in the IO tree.

Example: Connect an already appended EtherCAT P Box to a different connector

1. Double-click on the EtherCAT P Box in the IO tree.
(e.g. an EPP1008-0001 that was previously connected to X54)
2. Click on the EtherCAT tab.
3. Determine the corresponding IO module and port of the new connector with the help of the table.
(e.g. X55 → EP9224-0037, Port B)
4. Select the determined IO module and port in the drop-down list Previous Port.
(e.g. "Box 1 (EP9224-0037) – B")
Result: The EtherCAT P Box is connected to the new connector.

Checking the IO configuration graphically

1. Double-click the EtherCAT master device in the IO tree.
2. Click the EtherCAT tab.
3. Click the Topology button.
Result: A graphical illustration of the network structure created in TwinCAT appears.
Move the mouse pointer over the icons of the IO modules to display their description.