Description
- Model: TEWS TECHNOLOGIES TPMC815-11
- Brand: TEWS Technologies GmbH
- Series: TPMC PMC Communication Module Series
- Core Function: Provides ARCNET deterministic industrial network communication
- Product Type: PMC ARCNET Communication Module
- Key Specs: ARCNET 2.5 Mbps 32-bit PMC COM20020 controller
- Bus Architecture: 32-bit PMC (PCI Mezzanine Card)
- PMC Standard: IEEE P1386.1 compliant
- PCI Compatibility: PCI Rev. 2.1 / 2.2 compatible
- Communication Protocol: ARCNET deterministic token-passing network
- ARCNET Controller: COM20020
- Maximum Network Speed: 2.5 Mbps
- Interface Type: Traditional isolated hybrid interface
- Topology Support: Star, Tree, and Bus topology
- Connector Type: Front-panel DB9 interface
- Isolation: Galvanic isolation supported
- Board Dimensions: 149 mm × 74 mm
- Power Supply: +5 V DC through PMC carrier
- Operating Environment: Industrial automation and embedded systems
- Supported Platforms: PMC carrier boards in VME, CompactPCI, and embedded systems
- Typical OS Support: Linux, Windows, VxWorks, QNX
Tews Technologies TPMC815-11
Application Scenarios & Pain Points
The TPMC815-11 usually appears in systems that nobody wants to touch anymore…
but nobody can shut down either.
Typical environments:
- Legacy factory automation
- Transportation control systems
- Power-distribution networks
- Automotive test benches
- Embedded CompactPCI systems
And here’s the reality with ARCNET systems:
They often keep running for 15-20 years with almost no issues.
Then suddenly:
- one communication card fails,
- spare inventory disappears,
- the original integrator is gone,
- and nobody onsite still remembers the network configuration.
That’s when maintenance becomes painful.
Honestly, younger engineers today often recognize:
- Ethernet/IP,
- Profinet,
- Modbus TCP,
but have never touched ARCNET in production.
Meanwhile old plants still depend on it every single day.
