6ES7133-0BN01-0XB0 SIMATIC ET 200B

SKU: 6ES7133-0BN01-0XB0 Category: PLC

Description
Additional information

The Siemens SIMATIC ET 200B is a compact, distributed I/O module belonging to the ET 200 product family, designed for use with the SIMATIC S5 and early S7 programmable logic controller systems. The part number 6ES7133-0BN01-0XB0 identifies a digital output module within the ET 200B series, intended for decentralized peripheral applications in industrial automation environments. This module communicates with a central controller via the PROFIBUS-DP fieldbus protocol, enabling distributed signal processing at the machine level.

The ET 200B series modules are characterized by their compact block design, integrating terminal blocks and electronics into a single housing without the need for a separate backplane or rack. The 6ES7133-0BN01-0XB0 is a digital output module supporting 24 V DC output signals, with a fixed number of output channels suitable for direct actuation of solenoid valves, contactors, and indicator lamps. The module connects to the PROFIBUS-DP network through a dedicated DP slave interface and is configured via STEP 5 or STEP 7 software using GSD files. Its rugged construction is suited for direct panel or DIN rail mounting in industrial enclosures.

The SIMATIC ET 200B modules are widely deployed in manufacturing and process automation applications where decentralized I/O is required close to the field devices, reducing wiring complexity and cabinet space. Typical installations include automotive assembly lines, conveyor systems, packaging machinery, and general factory automation. The distributed architecture allows signal acquisition and output actuation near the process, minimizing cable runs and improving system response times.

Technical Specifications

Series	SIMATIC ET 200B
Module Type	Digital Output Module
Output Voltage	24 V DC
Communication Interface	PROFIBUS-DP
Mounting	DIN rail or panel mounting
Operating Temperature	0 °C to +60 °C
Storage Temperature	-40 °C to +70 °C
Relative Humidity	95 % (non-condensing)
Supply Voltage	24 V DC
Protection Rating	IP20
Certifications	CE, UL
Bus System Compatibility	PROFIBUS-DP (IEC 61158)

Common Fault Codes and Diagnostic Indicators

BF (Bus Fault): PROFIBUS-DP communication failure detected between the ET 200B module and the DP master controller.
Check PROFIBUS cable connections, termination resistors at both ends of the bus segment, and verify the DP master configuration matches the module's GSD file settings.
SF (System Fault): Internal hardware fault or configuration error detected within the ET 200B module.
Verify module configuration in STEP 5 or STEP 7, check for correct GSD file assignment, and replace the module if the fault persists after reconfiguration.
24V Supply Fault: The 24 V DC load supply voltage for the output channels is absent or out of tolerance.
Measure the 24 V DC supply at the module terminal block. Check fuses and power supply unit feeding the module. Restore supply voltage to within specified tolerance.
Output Short Circuit: A short circuit or overload condition has been detected on one or more digital output channels.
Disconnect field wiring from the affected output channels and test each channel individually. Identify and repair the short circuit in the field wiring or connected actuator before re-enabling the output.
Station Failure: The ET 200B station is not responding on the PROFIBUS-DP network; the DP master reports the station as unavailable.
Check module power supply, PROFIBUS address setting switches on the module, and physical bus connections. Ensure the PROFIBUS address configured on the module matches the address assigned in the master configuration.
Parameter Assignment Error: The DP master has sent parameter data that does not match the module's expected configuration.
Re-download the hardware configuration from STEP 5 or STEP 7 to the DP master. Verify that the correct GSD file for the 6ES7133-0BN01-0XB0 is used and that module parameters are correctly set.
Watchdog Timeout: The ET 200B module has not received a valid PROFIBUS-DP telegram from the master within the configured watchdog time.
Check PROFIBUS network integrity, cable shielding, and bus termination. Increase the watchdog timeout in the DP master configuration if the network cycle time is too long.

Frequently Asked Questions

What communication protocol does the 6ES7133-0BN01-0XB0 use?

The module communicates via PROFIBUS-DP, operating as a DP slave on the fieldbus network. It requires a PROFIBUS-DP master, such as a SIMATIC S7 CPU with integrated DP interface or a CP 342-5 communications processor.

Which software is used to configure the ET 200B module?

The ET 200B series is configured using Siemens STEP 5 or STEP 7 software, with the appropriate GSD file for the specific module variant loaded into the hardware configuration tool. The GSD file defines the module's I/O data structure and parameter options.

What is the supply voltage required for this module?

The module requires a 24 V DC supply voltage for both the electronics and the load circuit powering the digital outputs. The supply must be within the specified tolerance range for reliable operation.

Can the 6ES7133-0BN01-0XB0 be used with an S7-300 or S7-400 PLC?

Yes, the ET 200B module can be used as a distributed I/O station with S7-300 and S7-400 CPUs that have a PROFIBUS-DP master interface, as well as with compatible S5 systems using a DP master module.

What is the IP protection rating of this module?

The ET 200B module carries an IP20 protection rating, meaning it is suitable for installation inside a closed control cabinet and is not protected against water ingress or dust in open environments.

Troubleshooting

BF (Bus Fault) LED is lit and the module does not exchange data with the PLC

Check the PROFIBUS-DP cable connections at the module's bus connector. Verify bus termination is active only at the two physical ends of the PROFIBUS segment. Measure bus signal levels if possible.

Reseat the PROFIBUS connector on the module. Ensure termination resistors are correctly placed at both ends of the bus. Verify the PROFIBUS address set on the module's rotary switches matches the address in the STEP 7 hardware configuration, then re-download the configuration to the master.

Digital outputs do not switch despite the PLC sending output commands

Check whether the 24 V DC load supply is present at the module terminal block. Verify the output data in the PLC program is being written to the correct output address. Inspect field wiring for open circuits or blown fuses.

Restore the 24 V DC load supply if absent. Correct the output address mapping in the PLC program if necessary. Replace any blown fuses in the load circuit and repair open-circuit field wiring to the connected actuators.

Module is not recognized by the DP master during hardware configuration download

Confirm the GSD file for the 6ES7133-0BN01-0XB0 is installed in the STEP 7 hardware catalog. Check that the PROFIBUS address on the module's rotary switches is unique on the network and matches the configured address.

Install the correct GSD file from the Siemens support portal into the STEP 7 hardware catalog. Set the module's PROFIBUS address rotary switches to a unique address and update the hardware configuration accordingly, then re-download to the DP master.

SF (System Fault) LED is lit after module replacement

A newly installed replacement module may have a different firmware version or the hardware configuration in the PLC may not have been re-downloaded after the swap.

Re-download the hardware configuration from STEP 7 to the DP master CPU after installing the replacement module. Ensure the replacement module is the correct variant (6ES7133-0BN01-0XB0) and not a different sub-variant with different channel counts or parameters.

Intermittent communication errors and sporadic BF LED flashing

Intermittent faults typically indicate PROFIBUS cable shielding issues, improper grounding, or excessive bus length. Check cable routing near sources of electromagnetic interference such as frequency inverters or contactors.

Ensure PROFIBUS cable shielding is connected to protective earth at one end only per segment. Re-route cables away from high-voltage or high-frequency interference sources. Check that the total PROFIBUS segment length does not exceed the limit for the configured baud rate and add repeaters if necessary.

Condition	Repair, Used, Refurbished, New in box (sealed)