Siemens 6AR1303-0ED00-0AA0｜PROFIBUS DP/Ethernet Module Review
2026-06-08
ExcerptThis document introduces the discontinued Siemens 6AR1303-0ED00-0AA0 communication module. It covers product features, installation rules, commissioning, daily maintenance, fault solutions and model selection for old industrial control system renovation.
Product Review
Core Specifications
This hardware is released under the model name SICOMM SMP16-COM201. It integrates PROFIBUS DP and Ethernet communication functions in one compact unit. As a matter of fact, Siemens stopped the official production of this module back in 2017.
The PROFIBUS DP port supports a maximum baud rate up to 12 Mbit/s. In addition, the Ethernet interface works at 10/100 Mbit/s with auto MDI/MDIX adaptation. It runs stably on 24 V DC power, while total power consumption stays below 2 W.
Moreover, the module adopts electrical isolation to resist various industrial electromagnetic interference. Its working temperature ranges from -20°C to +60°C. The lightweight design weighs roughly 0.22 kg, and onboard LEDs deliver clear operating status feedback.
Key Advantages
First of all, dual communication ports support flexible network layout for diverse industrial demands. Furthermore, high transmission speed satisfies real-time control and remote data upload requirements effectively. Low power consumption and wide temperature tolerance make it fit harsh on-site workshop environments well.
Apart from that, internal isolation structure greatly lowers interference and ground loop risks. For on-site deployment, backplane bus mounting enables quick and convenient installation work.
Limitations
Since this product has been discontinued, brand-new original units are no longer available on the market. What is more, matching spare parts are quite difficult to source, so most hardware faults require full module replacement.
It is only compatible with SMP16 series racks, so it cannot work with other types of Siemens PLC devices. Also, no official firmware updates have been provided, which may bring potential compatibility risks in long-term operation.
Typical Applications
Via PROFIBUS DP, it connects the main PLC with inverters, servo drives and remote I/O modules. Meanwhile, it links the local control network to SCADA and upper management systems through the Ethernet port. In most cases, it acts as a replacement part for aging modules during old equipment renovation projects.
Usage Guide
Pre-installation Preparation
To begin with, keep ambient temperature between -20°C and +60°C, and stay away from dust as well as corrosive gas. Next, inspect the rack power supply and backplane bus to confirm normal working conditions. Finally, ensure the input voltage remains at 24 V DC ±10% with low ripple output.
Installation Steps
First, cut off the entire rack power and wait five minutes for full capacitor discharge. Then insert the module into the matched slot and fasten all fixing screws tightly. After that, set the terminal resistor state properly for the PROFIBUS DB9 connector.
Connect the RJ45 port to switches or host computers with standard Ethernet cables. Afterwards, wire the 24 V DC power line and protective ground firmly. At last, restore power supply and check LED indicators to verify normal running status.
Commissioning Steps
Initially, set the PROFIBUS DP station address via DIP switches or related configuration software. Then unify the baud rate and master-slave mode for all devices on the same PROFIBUS network.
In the next step, configure static IP address and subnet mask for Ethernet communication. Later, add the hardware in Step7 or TIA Portal and download all finished parameters. In the end, run network tests to confirm smooth data exchange and zero packet loss.
Maintenance & Repair Methods
Regular Monthly Maintenance
For daily upkeep, blow away accumulated dust on the module surface and slots with dry compressed air. Also, retighten all fixing screws and wiring terminals to maintain reliable contact.
Meanwhile, observe LED indicators frequently and record abnormal status in a timely manner. Furthermore, export and back up network configuration files for future emergency use.
Quarterly Maintenance
Pull out the module gently and clean golden fingers with alcohol and lint-free cloth. After this operation, test the insulation resistance between 24 V DC circuits and the ground terminal. In addition, check the current firmware version, and avoid unnecessary updates for this discontinued model.
Common Faults & Solutions
Constant FAULT indicator
Hardware damage, incorrect parameters or bus short circuits will trigger this alarm. To solve this issue, reinsert the module and restore factory default settings first. Next, inspect bus wiring and terminal resistors. If the fault persists, replace the whole module directly.
PROFIBUS communication failure
Mismatched baud rate, duplicated station addresses or loose wiring often cause disconnection. Thus, verify network parameters and standard pin definitions of the DB9 connector. Meanwhile, turn on terminal resistors at both ends of the entire bus line.
Ethernet connection failure
IP conflicts, damaged cables or faulty switch ports lead to interrupted network signals. Accordingly, run ping tests and double-check IP settings. Then replace cables or switch ports for troubleshooting. You can also restart the module to recover normal network connection.
No power indicator
Power loss, reversed wiring polarity or blown internal fuses result in this fault. First, measure the input voltage and check wiring polarity carefully. Then send the module to professional repair centers for fuse replacement.
Safety Warnings
Never disassemble the module without professional guidance, for it contains static-sensitive chips. Before all maintenance work, cut off power completely and wait for full circuit discharge. Additionally, wear anti-static wrist straps when touching circuit boards to prevent static damage.
Buying Guide & Genuine Identification
Model Code Explanation
6AR1 stands for the SICOMM SMP16 product series. The number 3 represents the category of communication modules.
0ED00 refers to dual PROFIBUS DP and Ethernet interfaces with 24 V DC power supply. Meanwhile, 0AA0 means the standard version without customized functions.
Model Selection
If you use existing SMP16 racks and need dual-network communication, choose 6AR1303-0ED00-0AA0. On the contrary, select updated alternative models for newly-built projects and hardware platforms. Besides, pick single-port modules if your system only needs one communication protocol.
Genuine & Refurbished Identification
Genuine modules carry clear original labels and standard laser-etched serial numbers. Meanwhile, complete brand logos and smooth ports are typical features of authentic used products.
Refurbished units usually have polishing traces and fuzzy labels, and their golden fingers look overly bright. In comparison, counterfeit products have rough appearances and irregular printed characters.
Procurement Suggestions
For procurement, cooperate with reliable suppliers who can provide formal after-sales warranty. Also, prepare at least one spare module for key production equipment. In the long run, consider upgrading to modern Siemens PLC series for more stable operation.
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