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Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
Chapter 2
Features Common to Compact 5000 I/O Digital Modules
Timestamping
The control system uses a 64-bit system clock. The modules support CIP Sync
timestamping by using the 1588 protocol that is passed throughout the system.
The 1588 protocol is defined in the IEEE 1588-2002 standard, publication
Standard for a Precision Clock Synchronization Protocol for Networked
Measurement and Control Systems.
Each input channel scan or new output application is stamped with a CIP Sync
time stamp. One time stamp is returned to the controller for the module with
the input data transfer.
You can use this feature for the following:
• To identify the sequence of events in fault conditions or during normal
operation.
You can use the system clock between multiple modules in the same
chassis or throughout a system in which a common Time Master is used.
• To measure the change between samples and detect when a new sample
is available for processing via the logic. The change between sample
likely correlates closely with the RPI if no samples are missed in the
logic.
You can also use the 1588 Protocol to synchronize sampling for modules across
the entire system. By using the Synchronized Sampling feature, you can
configure multiple modules to coordinate their input samples precisely with
each other by using the same RPI.
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
ANALOG INPUT
5069-IY4
SA P
ow
er
MOD P
ow
er
ANALOG OUTPUT
5069-OF8
DC INPUT
5069-IB16
Standard Modules
™
NET B1
LINK B1
NET A1
LINK A1
NET A2
LINK A2
SPEED X1
LINK X1
OK
RUN
FORCE
FAN 1
SD
FAN 2
Compact
Logix
5480
B1
A1
1
2
A2
5069-L46ERMW
CONTROLLER
UPS
MP
SA
R
B
F
R
B
F
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
ANALOG INPUT
5069-IY4
ANALOG OUTPUT
5069-OF8
DC INPUT
5069-IB16
IMPORTANT
Compact 5000 I/O safety modules do not support timestamping.