Identification of Discrete I/O Modules with Screw Terminal Block Connections
(Original Document)
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At a Glance
Discrete I/O modules with screw terminal block connection are identified by the markings on the lid of the front section of the module, and the labels located on the terminal block.
Illustration
The following diagram illustrates the identification of the Discrete I/O modules with screw terminal block connection.
Description
The following table shows the different elements for the identification of Discrete I/O modules, and gives an explanation for each one.
Marking
Location
Type of identification
1
On module display block
A marking giving the module reference number.
2
Under the module display block
A marking indicating the module’s characteristics.
3
On the terminal block
A removable label (supplied with the module), to be placed inside the door, printed on both sides and displaying the following indications:
  • external view (door closed):
    • the reference number of the module,
    • the number of channels,
    • a box for entering the module’s position number (address),
    • the designation of each channel (symbol).
  • internal view (door open):
    • the wiring diagram for inputs and outputs with the number of channels and connection terminals.