Addressing; Basic Rules For Addressing; Addressing Example - Festo CPX-E-EP Manual

2 Function
2.3

Addressing

2.3.1

Basic rules for addressing

– The address assignment of the inputs does not depend on the address assignment of the outputs.
– The numbering goes from left to right.
– The bus module counts as a module with 0 inputs and 0 outputs when the status bits and the I/O diagnostic
interface are deactivated.
– Activated status bits occupy 8 inputs.
– An activated I/O diagnostic interface occupies 16 inputs and 16 outputs.
– The inputs and outputs of different module types are assigned separately from each other.
The following sequence applies:
1. Bus module with status bits or I/O diagnostic interface (if activated via DIL switch)
2. Analogue modules
3. Technology modules
4. Digital modules
2.3.2

Addressing example

1 Bus module CPX-E-EP (with status bits)
– Status bits activated
– I/O diagnostic interface deactivated
2 Digital input module CPX-E-16DI
3 Digital output module CPX-E-8DO
4 Digital output module CPX-E-8DO
5 Analogue input module CPX-E-4AI-U-I
6 Analogue output module CPX-E-4AO-U-I
Fig. 2.3
The address assignment for the system CPX-E presented is shown in Tab. 2.5.
Module no. Module
0 Bus module CPX-E-EP (with status bits)
1 Digital input module CPX-E-16DI
2 Digital output module CPX-E-8DO
3 Digital output module CPX-E-8DO
4 Analogue input module CPX-E-4AI-U-I
5 Analogue output module CPX-E-4AO-U-I
Tab. 2.5
Festo – CPX-E-EP-EN – 2017-07 – English
Module no.: 0 1
1 2
Input address
I0 ... I7
I72 ... I87
–
–
I8 ... I71
–
2 3 4 5
3 4 5 6
Output address
–
–
O64 ... O71
O72 ... O79
–
O0 ... O63
11