1 year warranty
Fieldbus Communication Modules
Fieldbus communication modules provide the hardware interface between SIMATIC S7 controllers and wide-area telecontrol networks, enabling remote field stations to exchange process data with central SCADA and control room systems over dedicated lines, PSTN, or IP-based wide-area infrastructure. PLC Direct stocks Siemens SINAUT ST7 fieldbus communication modules across several hardware families, available as surplus sealed, refurbished, and used hardware.
Where are Fieldbus Communication Modules used in industrial environments?
Fieldbus communication modules are deployed wherever a SIMATIC S7 controller at a remote field site must transmit process data to a central control room or SCADA platform over a wide-area telecontrol network. They are standard hardware in utilities, infrastructure, and process industries operating distributed installations where field stations and the control center are separated by distances that local fieldbus networks cannot span.
Facilities and operations that depend on fieldbus communication modules include:
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Water and wastewater utilities monitoring and controlling geographically distributed pump stations, lift stations, and treatment facilities from a central operations center via SINAUT ST7 telecontrol networks.
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Power distribution operators integrating remote substation SIMATIC S7 controllers into a centralized SCADA platform for real-time grid monitoring and fault detection across extended service territories.
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Oil and gas pipeline operators connecting wellhead and compressor station PLCs to pipeline SCADA systems over wide-area telecontrol links spanning extended distances.
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Municipal infrastructure operators managing flood monitoring, environmental sensor networks, and remote-control assets, where distributed SIMATIC stations must report to a central control room.
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Chemical and process plants aggregating data from distributed SIMATIC S7 field controllers into a plant-wide historian or supervisory control system over dedicated telecontrol communication links.
A failed fieldbus communication module disconnects the affected SIMATIC station from the telecontrol network entirely, making exact module type, part number suffix, and firmware version matching essential before ordering a replacement.
Which brands of Fieldbus Communication Modules does PLC Direct stock?
This collection consists of Siemens SINAUT ST7 hardware, stocked across several module families.
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Siemens SINAUT ST7 TIM 3 Series: In-rack telecontrol interface modules for SIMATIC S7-300 systems, providing point-to-point and point-to-multipoint wide-area data communication between remote field stations and central SCADA control rooms.
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Siemens SINAUT ST7 TIM 4R Series: Enhanced in-rack telecontrol interface modules for SIMATIC S7-300 and S7-400 systems with Industrial Ethernet support and redundancy capability for high-availability telecontrol applications in critical infrastructure.
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Siemens SINAUT ST7 TD7 Series: Standalone telecontrol data processors used as autonomous remote stations in SINAUT networks, capable of storing and forwarding process data independently of a host SIMATIC controller.
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Siemens SINAUT ST7 System Components: Power supply modules, rack hardware, and communication adapters supporting installed SINAUT ST7 telecontrol architectures.
PLC Direct stocks Siemens SINAUT fieldbus communication modules as surplus sealed, refurbished, and used hardware, depending on available inventory.
What should you know before ordering Fieldbus Communication Modules?
Hardware condition options: Surplus sealed units are unused and in original manufacturer packaging. Refurbished units have been inspected and restored to functional operating condition. Used units are tested and operational, with conditions stated on each product listing.
Compatibility and part identification: SINAUT ST7 modules must be matched by exact part number, including all suffix characters, as suffixes identify the specific communication interface type, redundancy configuration, and hardware generation. A TIM 3 module is not interchangeable with a TIM 4R, even when physically similar, and selecting the wrong variant will result in a module that does not support the installed network configuration or SIMATIC chassis.
Warranty: All fieldbus communication module hardware purchased from PLC Direct carries a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products. PLC Direct supplies fieldbus communication module hardware for replacement and maintenance purposes and does not provide system design, programming, or integration services.