8. How easyE4 works internally
8.7 Device easyE4 time responses
8.7.3 Timing characteristics of expansion devices
You can use the connector to connect the easyE4 base device to up to 11 expansions
and assemble them into a single device block. This connector will not only establish
the mechanical connection between the devices, but also the electrical connection,
i.e., easyConnect (easyConnect is the local bus system to the expansion devices).
When the outputs and inputs on expansion devices are written to and read respect-
ively via easyConnect, the corresponding process will not be synchronized with the
program cycle. In fact, if the easyConnect cycle is more than twice as fast as the pro-
gram cycle, the inputs and outputs will be refreshed with every program cycle.
If, on the other hand, the easyConnect cycle is slower than half the program cycle,
the inputs and outputs may be refreshed after two program cycles instead.
The easyConnect cycle time will be between 10 ms and 15 ms depending on the spe-
cific configuration.
To see the easyConnect cycle time in the Project view, click between the easyE4
base device and the expansion device or between two expansion devices.
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