Festo Электроцилиндр - Manual (Page 18)

2 Overview
18 Festo – GDCP-CMMO-ST-EA-SY-EN – 1301a – English
2.4.11 Flash memory
The integrated FLASH memory of the CMMO-ST includes the parameter files and the firmware.
In principle, the number of possible write cycles is limited.
Entries are written into the FLASH memory by the following procedures:
– teaching with automatic storage ( section 5.5.3)
– downloading a new parameter file
– a firmware update
– “saving” in FCT
– reconfiguration of malfunction properties/error responses
– recording of movements with the trace function in FCT
Note
Damage to the FLASH memory
The FLASH memory used by the CMMO-ST is designed for 100,000 write cycles.
• Do not use the TEACH function in combination with “automatic storage” in continu-
ous operation, as this will quickly exceed the maximum number of write cycles.
Minimum time between downloading two parameter files: 3 seconds.
2.4.12 Higher-order control
“Higher-order control” is an exclusive access right.
Many motor controllers have multiple interfaces through which they can be controlled (e.g. an I/O
interface and a CAN interface). Simultaneous control by multiple interfaces, however, could result in
uncontrollable behaviour of the drive.
Master control ensures that only one interface controls the drive (i.e. it has sovereignty).
The interface that has higher-order control is specified in CVE object #3. The other interfaces then only
have read access to the motor controller.
2.5 Interfaces and simultaneous connections
Physical interfaces
The CMMO-ST has two physical interfaces:
– I/O interface
– EtherCat interface
Logical interfaces
Three logical interfaces can be distinguished within the Ethernet interface:
– FCT Interface
– web browser interface
– CVE interface (control via Ethernet)
Interfaces
Physical I/O interface EtherCat interface
Logical I/O interface FCT Web browser CVE
Tab. 2.1 Physical and logical interfaces