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6GK1503-3CA01

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Between copper and fiber segments, Siemens 6GK1503-3CA01 is a PROFIBUS OLM/P12 V4.1 module that converts one RS485 bus path into two optical channels.
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Technical specifications for 6GK1503-3CA01

  • Manufacturer:
    Siemens
  • Part Number:
    6GK1503-3CA01
  • Product Family:
    Siemens Simatic Net
  • Product Type:
    PROFIBUS OLM/P12 V4.1 Optical Link Module
  • Stock:
    1
  • Electrical Interface:
    One PROFIBUS RS485 9-pin D-sub
  • Optical Channels:
    Two channels with four BFOC sockets
  • Fiber Type:
    Plastic optical fiber and PCF support
  • PROFIBUS Rate:
    9.6 kbps to 12 Mbps
  • PROFIBUS PA Rate:
    45.45 kbps
  • POF Distance:
    Up to 80 m
  • PCF Distance:
    Up to 400 m
  • Propagation Delay:
    6.5 bit times
  • Supply Input:
    18 to 32 V DC
  • Current Consumption:
    0.2 A
  • Signaling Contact:
    24 V DC, maximum 0.1 A
  • Measuring Output:
    One two-pole connection
  • Operating Temperature:
    0 to 60 °C
  • Protection Rating:
    IP40
  • Installation:
    DIN rail or wall mounting
  • Weight:
    0.8929 lbs (0.405 kg)
  • Estimated shipping dimensions:
    7.45x3.95x11.2cm
  • Tariff Code:
    85176200
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Electrical to Optical Fiber Pairing Link Diagnostics Segment Layout

Features:

  • One electrical PROFIBUS segment exchanges data with two optical channels.
  • Separate BFOC transmit and receive sockets form each fiber path.
  • Signaling and measuring outputs expose link condition outside the data interfaces.
The OLM regenerates PROFIBUS traffic as it passes between the RS485 and optical sides.

Two optical channels permit line, star or documented redundant optical structures between OLM stations.

Electrical termination remains necessary at the physical ends of every RS485 segment.

The Siemens 6GK1503-3CA01 PROFIBUS OLM/P12 V4.1 Optical Link Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK1503-3CA01 PROFIBUS OLM/P12 V4.1 Optical Link Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Regenerating PROFIBUS across different media

  • RS485 side: The 9-pin D-sub connects one electrical PROFIBUS segment.
  • Optical side: Two channels convert the bus traffic into light for POF or PCF links.
  • Bit timing: The documented propagation delay must be included in the PROFIBUS segment calculation.
  • Bus rate: Every connected segment follows the compatible configured PROFIBUS transmission rate.

Completing each bidirectional optical channel

  • Transmit socket: The Tx fiber carries light from the local OLM to the remote receive socket.
  • Receive socket: The Rx fiber accepts the return signal from the remote transmit socket.
  • POF reach: Plastic optical fiber supports the documented shorter connection distance.
  • PCF reach: PCF extends the supported path while retaining the same transmit-to-receive pairing.

Separating alarm reporting from optical measurement

  • Status LEDs: Local indicators show power, bus and optical-channel conditions.
  • Signaling contact: The isolated contact transfers an assigned alarm condition to external wiring.
  • Measuring output: The two-pole output provides an optical-level value for commissioning and diagnosis.
  • Fault isolation: Comparing both channel states helps locate a fiber, connector or remote-module problem.

Combining copper termination with optical topology

  • RS485 ends: Each electrical PROFIBUS segment is terminated at its two physical ends.
  • Optical line: Successive OLM channels extend the bus without adding copper length between cabinets.
  • Redundant route: Two optical paths can be arranged only in the documented redundancy topology.
  • Power wiring: The 18 to 32 V DC supply remains local to each OLM station.
Description
One RS485 segment and two optical channels meet in Siemens 6GK1503-3CA01, a SIMATIC NET PROFIBUS OLM/P12 V4.1 link module. It regenerates bus traffic across the different media for an extended or documented redundant optical path.

Each optical channel of 6GK1503-3CA01 uses separate BFOC transmit and receive sockets. Light sent from one module must reach the receive socket at the remote end, while the paired return fiber carries traffic in the opposite direction.

The signaling contact on 6GK1503-3CA01 reports a configured module or link condition to external wiring, while the measuring output exposes optical level for diagnosis. Neither connection replaces the PROFIBUS data path on the RS485 or fiber interfaces.

Powered from an 18 to 32 V DC terminal, 6GK1503-3CA01 can mount on a DIN rail or wall. The electrical segment still requires correct PROFIBUS cable, address planning and termination even when the longer route is carried over fiber.
Alternative Names
6GK15033CA01 6GK1503 3CA01 6GK1 503-3CA01 Siemens 6GK1503-3CA01 6GK1503-3CA01 PROFIBUS OLM/P12 Siemens 6GK15033CA01 6GK 1503 3CA01 6GK1503 3CA01 Optical Link Module
Technical notes
On Siemens 6GK1503-3CA01, pair each optical transmit socket with the remote receive socket and keep the RS485 segment terminated at its physical ends. Use the measuring output for optical-level diagnosis, not as a process signal.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should the fiber sockets be paired on 6GK1503-3CA01?
Connect each 6GK1503-3CA01 transmit socket to the remote module's receive socket and connect the remote transmit socket back to the matching local receive socket.
Can Siemens 6GK1503-3CA01 power devices through its PROFIBUS connector?
No. Siemens 6GK1503-3CA01 uses its own 18 to 32 V DC supply, and the RS485 interface is a data connection rather than a field-device power source.
What is the measuring output on 6GK1503-3CA01 used for?
The two-pole measuring output of 6GK1503-3CA01 exposes the optical receive level for commissioning and link diagnosis; it is not an analog process-output channel.
Why is RS485 termination still required with Siemens 6GK1503-3CA01?
Siemens 6GK1503-3CA01 converts media but does not remove the electrical segment rules, so each copper PROFIBUS segment must still be terminated at its physical ends.
When should PCF be chosen instead of POF for 6GK1503-3CA01?
For 6GK1503-3CA01, use the fiber type that matches the distance, connectors and documented optical budget; PCF supports the longer stated link while POF serves the shorter path.

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