Festo CPX Series Electronic Manual page 59

3. Commissioning
Saving the string
assignment
Festo P.BE−CPX−CP−EN en 0405NH
The desired string assignment is generated and saved for
commissioning. In this way the appropriate addresses are
assigned to the connected CP modules.
Save the string assignments as follows:
1. Leave the CPX terminal's power supply switched off for
the time being.
2. Check whether each of the CP modules is connected to
the string which provides the address intended (see also
chapter 1).
3. Check whether the CP cable is properly fastened to the
union nut.
4. Switch on the power supply of the CPX terminal and, if
necessary, of the CP modules with the load voltage
connection.
On the CPX−CP interface, the strings' LEDs flash (L1 ... L4)
to which CP modules have been connected or for which
the string assignment has changed.
5. Use a small screwdriver or similar to press the Save key
for at least 1 s (see section 2.1).
This will save the current string assignment as the set
string assignment in the CPX−CP interface.
The strings' LEDs (L1 ... L4) for which the connected
CP modules have been recognised no longer flash.
The status LEDs of all the recognised CP modules light up.
6. Switch the power supply of the CPX terminal off and back
on. The current string assignment is now saved in the
CPX−CP interface.
7. Depending on field bus node or CPX field bus node or
CPX−FEC being used, the modified address range of the
CPX−CP interface may have to be accepted:
3−7