Address Assignment - Festo CPX-FB39 Description

3 Commissioning
3.4

Address assignment

A CPX terminal consists of a different number of inputs and outputs, depending on your order and the
configuration of the bus node.
The inputs and outputs are assigned automatically within the CPX terminal.
When using device description files (SDDML files) the controller software can extrapolate
the complete address assignment automatically.
Warning
Uncontrolled movement of the actuators, undefined switching statuses.
Injury to people, damage to the machine and system.
The byte sequence of the process data is Little Endian.
• Ensure that the process data is interpreted correctly.
Please Note
– Including bus nodes, a maximum of 10 electrical modules plus a pneumatic interface
and/or MPA pneumatic module is permitted in a CPX terminal.
– The address space of a CPX terminal is limited. The bus node provides the CPX ter­
minal a maximum address space of 64 bytes for inputs and 64 bytes for outputs.
– An activated diagnostic mode reduces the number of available I/O bytes.
– Each module of the CPX terminal occupies a specific number of bits, bytes or words
for module communication.
• Establish the address assignment (number of allocated inputs/outputs) on the CPX terminal prior to
commissioning.
Tab. 3.8 serves to determine the address assignment and/or the number of assigned
inputs and outputs on the CPX terminals.
The number of assigned inputs and outputs for modules can be found in the following
tables:
– Bus node CPX-FB39:
– FG S-0-1500.SI.0 – Bus Coupler (è Tab. 3.1)
– Digital modules:
– FG S-0-1502.SI.0 – Digital Output (è Tab. 3.2)
– FG S-0-1503.SI.0 – Digital Input (è Tab. 3.3).
– Analog modules:
– FG S-0-1504.SI.0 – Analog Output (è Tab. 3.4)
– FG S-0-1505.SI.0 – Analog Input (è Tab. 3.5).
– Technology modules:
– FG S-0-1507.SI.0 – Complex Protocol (è Tab. 3.6)
– FG S-0-1508.SI.0 – Sub Bus Master(è Tab. 3.7).
26 Festo – P.BE-CPX-FB39-EN – 1504NH – English