2
Product description
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Festo – GDCP-CMMO-ST-EA-SY-EN – 2017-05c – English
Changeover of device control
Every active Ethernet connection can take over device control from the I/O interface. Changeover is
possible in approved as well as in non-approved status. Transfer of device control can also take place
during execution of an order. For this, an ongoing order is stopped (Quick Stop).
Recommendation: stop current orders before reversing the device control.
Connection
Changeover of device control
FCT
Device control can be assumed by all other connections (device control: enable FCT).
When the device control is disabled, master control is restored to the I/O interface.
CVE
Device control can be assumed by all other connections and can assign device
control to an existing active connection (object #3).
Web servers
Can take over device control from the I/O interface. When the device control is
disabled, master control is restored to the I/O interface.
Tab. 2.19 Changeover of device control
Inhibit switch over
Device control can be adopted by an active connection if that process is not inhibited by CVE paramet
er “master control inhibit” (object #4).
Return of device control to the I/O interface in the FCT or web browser cannot take place if the block
has been enabled.
2.4.4
Time-out characteristics
The motor controller detects if the network connection to the FCT software has been interrupted and it
behaves in accordance with the settings parameterised in FCT on the “Error management” page (error
number 0x32). The waiting time is typically 1 s, but it can be longer in slow networks, as the waiting
time is dynamically adapted to the transmission rate. The time-out characteristics can be paramet
erised by the network settings in the FCT.
The motor controller does not detect if the connection to a web browser is interrupted. Movements
that have been started via the web browser can
no longer
be stopped by interrupting the Ethernet
connections using the browser.