Codings; Color Coding - Beckhoff EJ18 Series Manual

Installation of EJ modules
4.4

Codings

4.4.1

Color coding

Fig. 21: EJ modules color code; sample: EJ1809
The EJ modules are color-coded for a better overview in the control cabinet (see diagram above). The color
code indicates the signal type. The following table provides an overview of the signal types with
corresponding color coding.
Signal type
Coupler
Digital input
Digital output
Analog input
Analog output
Position measurement
Communication
Motion
System
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Modules
EJ11xx
EJ1xxx
EJ2xxx
EJ3xxx
EJ4xxx
EJ5xxx
EJ6xxx
EJ7xxx
EJ9xxx
Version: 1.5
Color
No color coding
Yellow
Red
Green
Blue
grey
grey
orange
grey
EJ18xx