Bachmann SEM201 is a SERCOS master module developed for the Bachmann M1 and M200 automation controller platforms. The module provides deterministic real-time communication between the controller and distributed servo drives using the SERCOS II protocol according to IEC 61491. It is primarily used in motion control systems requiring synchronized multi-axis drive communication with high transmission stability.
SEM201 uses fiber optic ring topology for communication between the master controller and connected servo amplifiers. The module supports up to 32 drives per network segment and allows synchronization of multiple masters within larger automation architectures. Typical applications include turbine control systems, high-speed manufacturing machinery, coordinated motion platforms, packaging systems, and industrial robotics.
The module exchanges cyclic process data and supports acyclic parameter access through the SERCOS service channel. Fiber optic transmission improves EMC immunity and electrical isolation in electrically noisy industrial environments.
| Parameter | Value |
|---|---|
| Model | SEM201 |
| Brand | Bachmann |
| Product Type | SERCOS Master Module |
| Series | M1 / M200 Control System |
| Communication Protocol | SERCOS II (IEC 61491) |
| Communication Medium | Fiber Optic |
| Bus Structure | Ring Topology |
| Supported Drives | Up to 32 Drives |
| Transfer Rates | 2 / 4 / 8 / 16 MBaud |
| Cycle Times | 62.5 μs to 65 ms |
| DPRAM | 2 Kb × 32 |
| Synchronization | Multiple Masters Supported |
| Galvanic Isolation | Yes, via Fiber Optic Interface |
| Modules per Controller | Maximum 12 |
| Operating Temperature | 0 to +60 °C |
| Storage Temperature | -40 to +85 °C |
| Humidity | 5–95% Non-condensing |
| Interface Type | 2 × FSMA Fiber Optic (In/Out) |
| Origin | Austria |
Data compiled from Bachmann technical documentation and fieldbus module specifications.
Model: SEM201
Part Number: 00011756-00
Product Description: SERCOS Master Module
Communication Standard: SERCOS II
Manufacturer: Bachmann electronic GmbH
SEM201 integrates directly into the Bachmann controller rack and operates as a dedicated motion communication interface. The module uses dual fiber optic ports for ring-based SERCOS communication. During startup, the controller distributes configuration parameters to connected drives and establishes synchronized cyclic data exchange.
The module supports standardized drive object access and runtime parameter modification through the SERCOS service channel. Multiple SEM201 modules can operate in synchronized controller architectures where coordinated axis control is required.
Fiber optic connectors should be inspected carefully during installation to prevent contamination or attenuation losses. Excessive bending radius on optical cables can cause intermittent communication faults under high-speed transmission conditions. Cabinet routing should separate power cables from signal and fiber optic paths to reduce EMC coupling into adjacent equipment.
When replacing an SEM201 module, verify identical SERCOS baud rate settings and network addressing before commissioning. Drive initialization timing should also be checked after replacement, especially in synchronized multi-axis systems. Spare modules should be stored in anti-static packaging and protected from moisture exposure during long-term inventory storage.
Q1: What SERCOS standard does the SEM201 support?
The module supports SERCOS II communication according to IEC 61491.
Q2: How many drives can SEM201 control?
One SEM201 module can control up to 32 SERCOS drives.
Q3: Does the module support fiber optic communication only?
Yes. SEM201 uses fiber optic ring topology with FSMA optical interfaces.
Q4: Can multiple SEM201 masters operate together?
Yes. Multiple masters can be synchronized for coordinated motion applications.
Q5: What is the typical industrial use of SEM201?
The module is commonly used in servo motion control systems, turbine automation, robotics, and synchronized industrial drive networks
Global Express Shipping
Returns & Warranty
Manufacturer: Bachmann
Product No.: SEM201
Product Type: SERCOS Master Module
Payment: T/T, Western Union
Weight: 400g
Dimensions: 5.5 cm x 5.5 cm x 12 cm
Shipping port: Xiamen
Warranty: 12 months
Bachmann SEM201 is a SERCOS master module developed for the Bachmann M1 and M200 automation controller platforms. The module provides deterministic real-time communication between the controller and distributed servo drives using the SERCOS II protocol according to IEC 61491. It is primarily used in motion control systems requiring synchronized multi-axis drive communication with high transmission stability.
SEM201 uses fiber optic ring topology for communication between the master controller and connected servo amplifiers. The module supports up to 32 drives per network segment and allows synchronization of multiple masters within larger automation architectures. Typical applications include turbine control systems, high-speed manufacturing machinery, coordinated motion platforms, packaging systems, and industrial robotics.
The module exchanges cyclic process data and supports acyclic parameter access through the SERCOS service channel. Fiber optic transmission improves EMC immunity and electrical isolation in electrically noisy industrial environments.
| Parameter | Value |
|---|---|
| Model | SEM201 |
| Brand | Bachmann |
| Product Type | SERCOS Master Module |
| Series | M1 / M200 Control System |
| Communication Protocol | SERCOS II (IEC 61491) |
| Communication Medium | Fiber Optic |
| Bus Structure | Ring Topology |
| Supported Drives | Up to 32 Drives |
| Transfer Rates | 2 / 4 / 8 / 16 MBaud |
| Cycle Times | 62.5 μs to 65 ms |
| DPRAM | 2 Kb × 32 |
| Synchronization | Multiple Masters Supported |
| Galvanic Isolation | Yes, via Fiber Optic Interface |
| Modules per Controller | Maximum 12 |
| Operating Temperature | 0 to +60 °C |
| Storage Temperature | -40 to +85 °C |
| Humidity | 5–95% Non-condensing |
| Interface Type | 2 × FSMA Fiber Optic (In/Out) |
| Origin | Austria |
Data compiled from Bachmann technical documentation and fieldbus module specifications.
Model: SEM201
Part Number: 00011756-00
Product Description: SERCOS Master Module
Communication Standard: SERCOS II
Manufacturer: Bachmann electronic GmbH
SEM201 integrates directly into the Bachmann controller rack and operates as a dedicated motion communication interface. The module uses dual fiber optic ports for ring-based SERCOS communication. During startup, the controller distributes configuration parameters to connected drives and establishes synchronized cyclic data exchange.
The module supports standardized drive object access and runtime parameter modification through the SERCOS service channel. Multiple SEM201 modules can operate in synchronized controller architectures where coordinated axis control is required.
Fiber optic connectors should be inspected carefully during installation to prevent contamination or attenuation losses. Excessive bending radius on optical cables can cause intermittent communication faults under high-speed transmission conditions. Cabinet routing should separate power cables from signal and fiber optic paths to reduce EMC coupling into adjacent equipment.
When replacing an SEM201 module, verify identical SERCOS baud rate settings and network addressing before commissioning. Drive initialization timing should also be checked after replacement, especially in synchronized multi-axis systems. Spare modules should be stored in anti-static packaging and protected from moisture exposure during long-term inventory storage.
Q1: What SERCOS standard does the SEM201 support?
The module supports SERCOS II communication according to IEC 61491.
Q2: How many drives can SEM201 control?
One SEM201 module can control up to 32 SERCOS drives.
Q3: Does the module support fiber optic communication only?
Yes. SEM201 uses fiber optic ring topology with FSMA optical interfaces.
Q4: Can multiple SEM201 masters operate together?
Yes. Multiple masters can be synchronized for coordinated motion applications.
Q5: What is the typical industrial use of SEM201?
The module is commonly used in servo motion control systems, turbine automation, robotics, and synchronized industrial drive networks
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Greyish White
|
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Integrate Allen-Bradley CompactLogix, Caterpillar ATS, and generators into DeltaV DCS over Modbus RTU. Covers ProSoft MVI69-MCM, Miille DIN266 gateways.
ONS instruction fires but the OTE coil never latches in Studio 5000 because the one-shot is only true for one scan. Use OTL/OTU or seal-in logic instead.
Configure Allen-Bradley Kinetix 5500 servo drives on EtherNet/IP. Covers CIP Sync, IEEE 1588 V2 timing, Stratix selection, DLR topology, and HMI.
A moving-average filter is the sliding-window smoother most instrument engineers drop into DCS and PLC analog paths. Here is how the window works, how N and sample time set lag, and when a...
On Frame 5–9 gas turbines, GE Mark VI and Mark VIe run control as function-block application software. This article maps process, protection, and sequencing functions—and what Toolbox ST access...
