Siemens SIMATIC ET 200M Operating Instructions Manual page 101

Forwarding the device name on replacement of the interface module
The device name of the IO device is saved on the SIMATIC Micro Memory Card for IM 153-
4AA00-0XB0.
As of IM153-4AA01-0XB0, you can save the device name as previously on a SIMATIC Micro
Memory Card or optionally in the interface module. In the latter case, no SIMATIC Micro
Memory Card is required. If you use a SIMATIC Micro Memory Card, the device name is
also saved to an IM153-4AA01-0XB0 on the SIMATIC Micro Memory Card.
To pass the device name when an interface module is replaced, move the SIMATIC Micro
Memory Card from the "old" interface module to the "new" one.
The IO device takes the device name from the SIMATIC Micro Memory Card after the supply
voltage is switched off and on. The station can be addressed again and will operate as
before the replacement.
For IM 153-4AA01-0XB0 you can also replace the device without removable media / PD.
Instead of being assigned a device name from the removable medium or programming
device, the IO device is now assigned a device name by the IO controller. The IO controller
uses the configured topology and the correlations derived from the IO devices. The
configured target topology must agree with the actual topology.
Node flash test
If you use more than one IO device, the "Assign device name" dialog also displays more
than one IO device. In this case, you should compare the MAC address of the device with
the indicated MAC address and select the proper IO device.
The identification of IO devices in a system is facilitated by a node flash test. To activate the
flash test:
1. Select one of the indicated IO devices from the "Assign device name" dialog box.
2. Select the flash period you want to use.
3. Press the "Flash on" button.
The LINK LED flashes on the selected IO device. If PROFINET IO is looped, both LINK
LEDs will flash.
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
Commissioning
6.2 PROFINET IO
99