Module labeling
D300529 0115 - BL67 I/O modules14-2
14.1 General
All electrical and electronics components for BL67 stations are supplied with labels to guarantee clear
identification. In addition, Turck offers marking and labeling materials which enable individual and
application specific labeling of each component. Fundamentally, the differences are as follows.
14.1.1 Colors
Each electronic module can be recognized immediately by the colored lid imprint (top and bottom).
Color identification of BL67 modules
Table 14-1:
Color identifica-
tion of BL67 mod-
ules
Gateway (GW) gray
Power Feeding modules 24 VDC (PF)
gray
Digital input modules (DI) white
Analog input modules (AI) blue
Digital output modules (DO) red
Analog output modules (AO) green
Technology modules (e.g. RS232) yellow
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