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| Place of Origin | Germany |
| Brand Name | SIEMENS |
| Certification | CE ROHS |
| Model Number | 6SX7010-0FF05 6SE7090-0XX84-0FF5 |
Part Number: 6SE7090-0XX84-0FF5
Alternate / Internal Ref: A5E00364662
Kit Reference: 6SX7010-0FF05
Manufacturer: Siemens AG (Germany)
Product Type: CBP2 — Communication Board PROFIBUS 2
The 6SE7090-0XX84-0FF5 is the CBP2 PROFIBUS communication module for the Siemens SIMOVERT MASTERDRIVES Motion Control (MC) drive series.
Inserting this board into an available electronics box slot transforms a standalone MC drive into a PROFIBUS DP slave node — instantly visible to any PROFIBUS DP master on the same network and ready to receive speed setpoints, torque commands, and control words while returning actual values and status back to the master in every scan cycle.
Industrial automation at scale depends on these precise, repeatable exchanges.
A packaging line's central PLC needs to know whether each drive reached its commanded speed before triggering the next step.
A winding machine's tension control must update speed setpoints on every motor many times per second. PROFIBUS DP handles these exchanges with the determinism and speed that general-purpose serial protocols cannot guarantee — and the 6SE7090-0XX84-0FF5 is what brings that capability into the SIMOVERT MASTERDRIVES MC platform.
This module is specifically configured for the Motion Control variant of the MASTERDRIVES family.
MC drives serve servo and high-performance vector applications — CNC spindle drives, robotics joints, high-speed positioning axes — where the fieldbus communication is just as performance-critical as the drive's speed and torque regulation.
The CBP2's data exchange rate is matched to the MC control cycle timing, ensuring that fieldbus data arrives and is acted on within the drive's interpolation period.
| Parameter | Value |
|---|---|
| Part Number | 6SE7090-0XX84-0FF5 |
| Alternate Ref | A5E00364662 |
| Kit No. | 6SX7010-0FF05 |
| Manufacturer | Siemens AG |
| Protocol | PROFIBUS DP (CBP2) |
| Product Family | SIMOVERT MASTERDRIVES Motion Control |
| Dimensions | 90 × 83 mm |
| Operating Temp | 0°C to 70°C |
| Compatible Slots | A–G (not F), Z options G91–G97 |
| Production Status | Discontinued 30/09/2020 |
| Country of Origin | Germany |
The SIMOVERT MASTERDRIVES electronics box houses the main control board alongside option slots for supplementary boards. Slot assignment is defined by the drive's Z-option code, which indicates which slot positions are available for which board types.
The 6SE7090-0XX84-0FF5 installs in slots A through G, with slot F excluded — this exclusion reflects that slot F is pre-assigned in certain configurations for other functions, and the PROFIBUS board must not compete with those assignments.
On installation, the board physically connects to the drive's local bus via its edge connector.
The faceplate — included in the kit — provides the PROFIBUS cable connector and any status indicators that are visible from the drive cabinet front.
Once installed and the PROFIBUS cable connected, the drive requires parameterisation to define its bus address and the process data structure (which drive variables are exchanged as cyclic data with the PLC master).
The CBP2 designation identifies the second generation of Siemens' Communication Board PROFIBUS option for SIMOVERT drives.
The first generation (CBP1) provided basic PROFIBUS connectivity but with limitations in process data word count and data exchange speed. CBP2 addressed these constraints by expanding the available cyclic process data channels and improving the board's response to master polling.
For PROFIBUS installations at 12 Mbit/s — the rate used in demanding MC applications — CBP2's improved timing is significant. CBP2 also introduced enhanced diagnostics accessible through the PROFIBUS diagnostic interface, aiding fault isolation during commissioning and in service.
The 6SE7090-0XX84-0FF5 was discontinued at end of September 2020. For sites considering migration away from SIMOVERT MASTERDRIVES, the SINAMICS S120 platform uses PROFIBUS DP via the CBE20 board or the optional CB31 Communication Board.
If the plant automation is migrating from PROFIBUS to PROFINET — a common transition as Siemens promotes PROFINET in newer automation designs — SINAMICS S120 supports PROFINET via CBE20 without any separate add-on board.
For sites that must maintain PROFIBUS DP on operating SIMOVERT MASTERDRIVES MC systems, the aftermarket remains the only supply channel for 6SE7090-0XX84-0FF5 boards.
These are available as tested exchange units from specialist drive spare parts suppliers.
Q1: A SIMOVERT MASTERDRIVES MC drive has the 6SE7090-0XX84-0FF5 installed but does not respond to PROFIBUS commands from the PLC. All other PROFIBUS slaves respond normally. What is the most likely configuration issue?
The most common cause of a single non-responsive slave is a PROFIBUS address mismatch.
The address set in the CBP2's parameter (typically P918 in the MASTERDRIVES parameter list) must exactly match the address configured in the PLC's hardware project for this drive.
Also confirm that the GSD file for the CBP2 module loaded into the PLC project matches the actual board's firmware version — a version mismatch can prevent communication even when addresses are correct.
Q2: The drive communicates correctly over PROFIBUS at low production speeds but generates F085 (telegram failure) at high speeds during rapid acceleration. What is the root cause?
F085 during high-speed acceleration indicates the drive is not receiving valid PROFIBUS telegrams fast enough during the load transient.
This typically means the PROFIBUS master cycle time is near its maximum tolerance, and under bus load during acceleration, cycle time slips above the watchdog limit.
Increase the PROFIBUS watchdog time parameter in the drive's CBP2 configuration to provide more tolerance, or reduce the master cycle time by optimising the number of active slaves and data volume on the segment.
Q3: The 6SE7090-0XX84-0FF5 is supplied without operating instructions. Where are the configuration and wiring documents found?
The CBP2 module's documentation — installation steps, parameter descriptions for bus address and telegram type, and wiring details — is included in the SIMOVERT MASTERDRIVES Compendium.
The Compendium covers all option boards for the MASTERDRIVES series and is available from the Siemens Industry Support website as a downloadable PDF.
The quick wiring guide is also typically printed on the inside cover of the kit packaging.
Q4: The kit number for this module is 6SX7010-0FF05. What is the kit, and when is it needed?
The kit (6SX7010-0FF05) is a pre-packaged installation set that includes the CBP2 board itself, the required connector faceplate, any necessary hardware, and the quick installation guide.
The kit is needed when installing the CBP2 in a drive for the first time — without the faceplate, the PROFIBUS cable cannot be connected to the board correctly, and the faceplate also provides the mechanical retention for the cable connector.
When ordering a replacement board, confirm whether a full kit or the bare board alone is required based on whether the existing faceplate is in serviceable condition.
Q5: Two SIMOVERT MASTERDRIVES MC drives are running on the same PROFIBUS segment. Can both have 6SE7090-0XX84-0FF5 boards installed simultaneously?
Yes — multiple drives on the same PROFIBUS segment each require their own CBP2 board, each configured with a unique bus address.
The PROFIBUS standard supports up to 126 addressable nodes per segment.
Each drive is independently addressed, and the PLC master communicates with each drive independently in its cyclic polling sequence.
The practical limit per segment without repeaters is typically 32 nodes. Both drives operate in full parallel on the bus with no conflict, provided their addresses are unique.
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