Festo CECX-X-C1 Series, Manual

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CECX modular control system
Defining Extras->Debug task Yes
Switching Extras->Debug task on/off Yes
Extras-> call hierarchy Yes
1) The control is a preemptive multi-task system in which the tasks with the higher priority can interrupt or
displace those with a lower one. The system events are executed in a highest priority task context and
therefore displace all other tasks. This means that a system event should contain only a very short code and
the execution time should not exceed 50 µs.
If this time factor would not be observed in a system event (e.g. due to long calls or even endless loop) then
the entire control would be blocked.
To prevent this from occurring it is monitored via a hardware watchdog which returns the control to a safe
state by means of a restart.
Functions of long duration in the context of a system event, such as SysResetPlcProgram or file operations,
should therefore not be executed. An IEC task with the highest priority which runs as event-driven task
should be used for debugging. In the context of the event only the event on which the task is waiting is called
up (if necessary, also information that would otherwise be lost is stored, e.g. the precise time stamp,
although this should only be assignments to global variables).
2) With some functions (e.g. SysRTCSetTime) this could cause task monitoring (watchdog) to respond.
Functionality / functions Supported
Insert -> new watch list Yes
Extras-> rename watch list Yes
Extras-> save watch list Yes
Offline mode
Extras-> load watch list Yes
Extra -> monitoring active Yes
Extras-> write recipe Yes
Extras-> read recipe Yes
Watch and recipe
manager
Online mode
Forcing and writing values in watch
manager Yes
Work area All functions Yes
Functionality / functions Supported/name
Name Modular controller: CECX-X-
C1
Motion controller: CECX-X-M1
Target system settings Target platform
Type-adjusted operand
value Only relevant for X86
CECX-I 6