Product Overview
SIMATIC DP / PROFIBUS6ES7972-4AA01-0XA0 is a SIMATIC DP Power Rail Booster that converts data between the electrical PROFIBUS RS485 interface and the Power Rail transmission path. A link requires at least two boosters: one receives the RS485 data, raises it to the Power Rail signal level and the second converts it back for the remote PROFIBUS station.
The device operates transparently without its own PROFIBUS address. It transfers PROFIBUS DP/FMS, FDL and MPI messages, checks message syntax and automatically detects a supported transmission speed after power-up. Signal regeneration permits cascaded Power Rail sections and bidirectional communication across moving-machine applications.
Technical Specifications
Exact model dataBidirectional Signal Path
Documented boundaryRS485 reception
The stationary booster receives the master telegram at RS485 level and converts it for transmission through the Power Rail section.
Power Rail transfer
Two contact rails or cable strands carry the regenerated differential signal between booster positions.
Transparent return path
The remote booster restores the RS485 level, and the slave response travels back through the same conversion chain.
Mounting and Commissioning
Model-specific requirements
Build a paired link
Use at least two Power Rail Boosters for one transmission link.
Mount with power removed
Install horizontally on the specified DIN rail and switch off the supply before fitting or removal.
Wire the front interfaces
Connect 24 V DC, the group-fault contact, Power Rail conductors and the preassembled RS485 bus connector.
Set and commission
Begin with all DIL switches OFF, then verify the detected baud rate and the front diagnostic LEDs.
FAQ
Six model checksHow does 6ES7972-4AA01-0XA0 implement its Bidirectional Signal Path role?
6ES7972-4AA01-0XA0 is a SIMATIC DP Power Rail Booster that converts data between the electrical PROFIBUS RS485 interface and the Power Rail transmission path. A link requires at least two boosters: one receives the RS485 data, raises it to the Power Rail signal level and the second converts it back for the remote PROFIBUS station.
Which SIMATIC DP Power Rail Booster family context applies to 6ES7972-4AA01-0XA0?
6ES7972-4AA01-0XA0 belongs to the SIMATIC DP / PROFIBUS family and should be selected within that documented system context.
Which Rated current value defines the Bidirectional Signal Path configuration for 6ES7972-4AA01-0XA0?
Rated current is documented as 1.2 A maximum; retain the complete model because adjacent variants can differ.
Before commissioning 6ES7972-4AA01-0XA0, which Build a paired link check matters most?
Use at least two Power Rail Boosters for one transmission link.
Can 6ES7972-4AA01-0XA0 be selected without reviewing its Bidirectional Signal Path boundary?
No. Confirm the complete 6ES7972-4AA01-0XA0 designation, the associated system configuration and the documented interfaces before replacement.
Why must the full 6ES7972-4AA01-0XA0 identity be retained for the SIMATIC DP Power Rail Booster enquiry?
The full 6ES7972-4AA01-0XA0 identity separates this configuration from related variants with different hardware, licensing, interfaces or compatibility.
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