6ES7155-5AA00-0AB0 SIMATIC ET 200SP IM 155-5 PN ST

SKU: 6ES7155-5AA00-0AB0 Category: PLC

Description
Additional information

The Siemens SIMATIC ET 200SP IM 155-5 PN ST, part number 6ES7155-5AA00-0AB0, is an interface module belonging to the ET 200SP distributed I/O system family. It serves as the head module for the ET 200SP station, connecting the local I/O modules to a higher-level controller via PROFINET. This module is part of Siemens' SIMATIC S7 automation platform and is designed for compact, high-density distributed I/O applications.

The 6ES7155-5AA00-0AB0 features PROFINET IO communication with two integrated RJ45 ports supporting a media redundancy protocol (MRP) for increased network availability. It supports isochronous real-time (IRT) and real-time (RT) communication modes, enabling precise and deterministic data exchange. The module provides a backplane bus for connecting up to 32 ET 200SP I/O modules and a server module, with a maximum I/O data width of 64 bytes input and 64 bytes output. It supports PROFINET diagnostics, device replacement without a programming device, and firmware updates via PROFINET.

The ET 200SP IM 155-5 PN ST is widely used in machine building, automotive manufacturing, food and beverage processing, and material handling systems where distributed I/O is required close to the process. Its compact form factor and modular design make it suitable for installation in tight control cabinet spaces. The module integrates seamlessly with SIMATIC S7-300, S7-400, S7-1200, and S7-1500 controllers acting as PROFINET IO controllers.

Technical Specifications

Communication Interface	PROFINET IO (2x RJ45)
PROFINET Protocol	RT and IRT
Max. I/O Modules per Station	32
Max. Input Data	64 bytes
Max. Output Data	64 bytes
Supply Voltage	24 V DC
Current Consumption (from 24 V DC)	max. 200 mA
Operating Temperature	0 °C to +60 °C
Storage Temperature	-40 °C to +70 °C
Relative Humidity	95% (non-condensing)
IP Rating	IP20
Mounting	DIN rail (35 mm)
Dimensions (W x H x D)	30 mm x 117 mm x 74 mm
Certifications	CE, UL, cULus, ATEX
Series/Product Family	SIMATIC ET 200SP

Common Diagnostic Fault Codes

Fault Code 1: Station failure: The ET 200SP station is not reachable on the PROFINET network.
Check PROFINET cable connections and RJ45 connectors. Verify network switch configuration and IP address assignment. Confirm the IO controller is operational.
Fault Code 2: Configuration error: The actual hardware configuration does not match the expected configuration in the IO controller project.
Compare the physical module arrangement with the hardware configuration in the engineering tool (TIA Portal or STEP 7). Correct the configuration or replace mismatched modules.
Fault Code 3: Power supply fault: Insufficient or missing 24 V DC supply voltage to the interface module.
Measure the 24 V DC supply at the power connector. Check the power supply unit output and wiring. Replace the power supply if voltage is out of tolerance.
Fault Code 4: Module access error: A connected I/O module is not responding or has been removed unexpectedly.
Check that all I/O modules are correctly seated on the backplane. Inspect module locking mechanisms. Replace any faulty I/O module.
Fault Code 5: Firmware update error: Firmware update process failed or was interrupted.
Retry the firmware update via TIA Portal or STEP 7 using a stable PROFINET connection. Ensure the correct firmware file is used for this module variant.
Fault Code 6: IP address conflict: Another device on the network is using the same IP address as the IM 155-5.
Use the Siemens Primary Setup Tool or TIA Portal to assign a unique IP address to the interface module. Check the network for duplicate IP assignments.
Fault Code 7: Watchdog timeout: The IO controller has not communicated with the interface module within the configured watchdog time.
Check the PROFINET network for interruptions or high latency. Verify the IO controller is running and the cyclic communication is active. Adjust watchdog time if necessary.

Frequently Asked Questions

Which PROFINET communication modes does the 6ES7155-5AA00-0AB0 support?

The IM 155-5 PN ST supports both PROFINET RT (Real-Time) and IRT (Isochronous Real-Time) communication modes, enabling deterministic and time-synchronized data exchange with the IO controller.

How many I/O modules can be connected to this interface module?

Up to 32 ET 200SP I/O modules plus one server module can be connected to the IM 155-5 PN ST on a single station.

Is the 6ES7155-5AA00-0AB0 compatible with TIA Portal?

Yes, the module is fully supported in Siemens TIA Portal and can also be used with STEP 7 (classic) when the appropriate hardware support package (HSP) is installed.

Does this module support device replacement without a programming device?

Yes, the IM 155-5 PN ST supports device replacement without a programming device (PG), provided the IO controller is configured to assign the device name and IP address automatically via PROFINET.

What is the supply voltage required for the 6ES7155-5AA00-0AB0?

The interface module requires a 24 V DC supply voltage, typically provided by a SITOP or equivalent DIN rail power supply unit.

Troubleshooting

The ET 200SP station does not appear online in TIA Portal or STEP 7

Check the PROFINET link LEDs on both RJ45 ports of the IM 155-5. Use the network diagnostics in TIA Portal to scan for accessible devices. Verify the IP address and device name assigned to the module.

Assign the correct IP address and PROFINET device name using TIA Portal's 'Accessible Devices' function or the Siemens Primary Setup Tool. Ensure the PROFINET cable is connected to the correct port and the network switch is operational.

BF (Bus Fault) LED is lit red on the interface module

A red BF LED indicates a PROFINET communication fault. Check the physical PROFINET connection, cable integrity, and switch port status. Verify the IO controller is in RUN mode.

Replace the PROFINET cable if damaged. Confirm the IO controller project is downloaded and running. Check for IP address conflicts on the network and resolve any duplicate addresses.

SF (System Fault) LED is lit red

The SF LED indicates a module or configuration fault within the ET 200SP station. Access the diagnostic buffer in TIA Portal or STEP 7 to identify the specific fault code and affected module.

Compare the physical hardware configuration with the project configuration. Replace any faulty or incorrectly seated I/O module. Correct the hardware configuration in the engineering tool and download the updated project.

Station enters safe state and outputs de-energize unexpectedly

Check the 24 V DC supply voltage at the power module feeding the I/O modules. Inspect the diagnostic buffer for power supply or module faults. Verify watchdog settings in the IO controller configuration.

Restore the 24 V DC supply if it has dropped below tolerance. Replace the power module if faulty. Adjust the PROFINET watchdog timeout in the IO controller configuration if communication interruptions are causing nuisance trips.

Firmware update fails to complete via TIA Portal

Verify the PROFINET connection is stable during the update process. Check that the firmware file version is compatible with the hardware revision of the 6ES7155-5AA00-0AB0.

Use a direct point-to-point PROFINET connection between the programming device and the interface module to eliminate network instability. Download the correct firmware version from the Siemens Industry Online Support portal and retry the update.

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