Assignment of the connectors

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

An EP9224-0037 is represented by two IO modules in the TwinCAT IO tree:

Assignment of the connectors 1:
EP9224-0037 in the TwinCAT IO tree

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

Assignment of the connectors 2:
Designations of the connectors

Type

EP9224-0037

TwinCAT

Connector

IO module

Port

EtherCAT P output

X52

Assignment of the connectors 3: EP9224-1037

D

EtherCAT P output

X53

B

EtherCAT P output

X54

C

EtherCAT P output

X55

Assignment of the connectors 4: EP9224-0037

B

EtherCAT input

X70

A

EtherCAT output

X71

C

On the following page you will find examples of the use of 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 connectors 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.