Festo CPX-CTEL-4-M12-5POL, Описание

Страница: 26 / 59

4 Commissioning
26 Festo – P.BE-CPX-CTEL-EN – 1601b – English
4 Commissioning
4.1 Configuration
Configuration of the I/O mode
When configuring the I/O mode, DIL switch group 1 is used to determined whether the CTEL master module
only makes inputs available at all 4 I-Ports (pure input module), only outputs (pure output module), or inputs
and outputs (mixed operation) (
è
Tab. 2.5).
Configuration of I/O lengths
Configuration of the I/O lengths is conducted via DIL switch group 2 and is determined together for all
4 I-Ports (
è
Tab. 2.6). An I/O length of 4 bytes per I-Port, for example, corresponds to a setting of
16 bytes for the entire module.
Each I-Port device that corresponds to the set configuration can be connected during
operation.
The connected devices must not exceed the set I/O lengths. Otherwise, an I-Port config­
uration error is issued.
Example
The following devices should be connected to the CTEL master module at system start:
– Output module with 16 outputs (2 bytes O)
– Input module with 8 inputs (1 byte I)
– Valve terminal with 32 outputs (4 bytes O)
– Input module with 16 inputs (2 bytes I)
Since devices with inputs and outputs are to be connected, the I/O mode of the CTEL master module
must be set to “mixed operation” (switch S1.1 and S1.2 to “ON”).
The I/O length results from the device with the highest I/O requirements (4 bytes for
the valve terminal in this example).
Since individual I/O lengths are not possible during configuration, an I/O length of 4 bytes per I-Port,
that is 16 bytes (for all I-Ports together), must be selected (switch S2.1 to “OFF”, S2.2 to “ON”).
The I/O configuration presetting selected here is thus 16 bytes inputs/16 bytes outputs.
In cases in which the reserved address space is not completely used by the connected devices, this
results in input and output addresses (channels) to which no device input or output is assigned.