Wiring
6
6.1 Markings of IO device components
6.1.1 Factory markings
The following table shows the markings that are present ex factory. The markings supports the
installation of the modules and the configuration of the distributed I/O with existing modules.
Table 6-1 Markings
Markings What is labeled? In the
figure
Identifier for Markings or colors
Module labeling ① Type of I/O module
② Labeling of the LED
③ Labeling strips Plant-specific labeling pos‐
sible
⑤ Function version
⑥ Firmware version
⑦ Article number
Color coding of the
I/O module classes
(identification of basic
types)
④ Digital input module white
Digital output module black
Analog input module light blue
Analog output module dark blue
Universal input/output mod‐
ule
bright gray-green (IP
Basic)
Color coding of the
potential group
⑧ Opening the potential group Light-colored terminal
block
⑨ Extending the potential group Dark-colored terminal
block
Color coding of the
spring releases
⑩ Process terminals gray, white
Terminals for the supply volt‐
age
(light-colored terminal block)
red, blue
Measuring point - voltage of
the voltage buses
(dark-colored terminal block)
red, blue
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD 75
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