Festo CPX-CTEL-4-M12-5POL, Description

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4 Commissioning
Festo – P.BE-CPX-CTEL-EN – 1601b – English 35
4.6.4 Parameter “Behaviour after I-Port short circuit”
Through the parameter “Behaviour after I-Port short circuit”, the status of the load voltage supply can
be established for an I-Port device after elimination of a short circuit in an I-Port connecting cable.
After the short circuit is eliminated, the power supply for the corresponding device can
– remain switched off (setting “Leave switched-off ”) or
– be automatically switched on again (setting “switch on again”).
The parameter “Behaviour after I-Port short circuit” is embedded as bit 7 in parameter 8.
The remaining 7 bits are assigned otherwise (
è
Tab. 4.1).
When the parameter for changing of the setting is overwritten, the content of the bits
6 … 0 can be any desired. Only bit 7 is evaluated for parameterisation.
With access via FMT or MMI, the parameter can be selected and changed separately. In this way,
the parameters “I/O mode” and “I/O length” can only be read.
Parameter information
The setting is conducted via bit 7 of parameter 8 (relative address 7).
Bit 7 Parameter setting
0 Leave switched off (default setting)
1 Switch on again
Tab. 4.2
4.6.5 Parameter “Device parameter I-Port”
For each connected device, 8 bytes are available for representation of the device parameters. These
parameters are individually interpreted by each device and are defined in the description of the corres­
ponding device.