Interface Quantity Supplementary note
● Channel
configured
as an input
Max. 8 channels
DIQ (DIQ<n>)
● Input voltage: max. 30 V
● Integrated sensor supply
Maximum current per channel: 500 mA
● Channel 0 (with "Counter ..." submodule):
"Counter" and "Frequency measurement" operating
modes
● Channel
configured
as an output
Max. 8 channels
DIQ (DIQ<n>)
● Signal voltage: max. 30 V
● Maximum current per channel: 500 mA
Note: The parallel connection of the DQ channels is im‐
permissible.
Free channel possible as output for the comparison value
status (when using the "Counting" function).
Power supply PSx
24 V terminal PSx (X80/X81) Redundant supply possible
Connection for ref‐
erence potential
(ground)
6 connections for ref‐
erence potential
(ground) (X82)
For optional connection of a sensor to ground.
Additional information
Section "Technical specifications (Page 147)"
4.3 CFU DIQ: Overview of the interfaces
The CFU is an IO device on the higher-level PROFINET IO system.
Interfaces
The CFU DIQ has the following interfaces:
Interface Quantity Supplementary note
Interfaces for bus systems:
PROFINET IO 1 connection
(terminal X5 of the
CFU for a BusAdapter)
BusAdapter with 2 ports (X1) for redundant connection to
PROFINET IO or forwarding the PROFINET IO.
Redundant connection is possible:
● Media redundancy (MRP)
● Singular system redundancy (S2)
The approved BusAdapter variants for connecting the
CFU to PROFINET IO are listed in section "Article num‐
bers (accessories / spare parts) (Page 181)".
Channels (freely configurable: Digital inputs / outputs)
Operation planning
4.3 CFU DIQ: Overview of the interfaces
SIMATIC CFU
Commissioning Manual, 08/2019, A5E39252870-AD 25
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