PROSOFT,3100-INUSA
PROSOFT,3100-INUSA
PROSOFT,3100-INUSA
PROSOFT,3100-INUSA
PROSOFT,3100-INUSA
PROSOFT,3100-INUSA
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3100-INUSA

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The PROSOFT 3100-INUSA is a rugged Communication Interface Module designed for the Rockwell Automation 1771 PLC platform, enabling seamless Modbus Master/Slave integration.
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Technical specifications for 3100-INUSA

  • Manufacturer:
    ProSoft
  • Part Number:
    3100-INUSA
  • Product Family:
    ProSoft
  • Product Type:
    Communication Interface Module
  • Internal Data Memory:
    4000 Registers (16-bit each)
  • Backplane Current Load:
    0.65 A @ 5 Vdc
  • Operating Temperature:
    0°C to 60°C (32°F to 140°F)
  • Storage Temperature:
    -40°C to 85°C (-40°F to 185°F)
  • Relative Humidity:
    5% to 95% (non-condensing)
  • Vibration:
    5g from 10 Hz to 150 Hz Optical Isolation 500V (between field and backplane)
  • Battery Type (Replaceable):
    3.6V Lithium-thionyl-chloride, 1/2AA (ER14250)
  • Weight:
    0.52 kg
  • Estimated shipping dimensions:
    3x15x27.2cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • 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 Specifications Operating Environment Compatibility & Interoperability Applications

Features:

  • Dual Flexible Serial Ports with Multiple Protocols
  • Intelligent Modbus Master/Slave Command Handling
  • Built for Harsh Industrial Environments
The PROSOFT 3100-INUSA is equipped with two independent DB25 serial ports, each configurable for RS-232, RS-422, or RS-485. This allows you to connect to a wide variety of field devices, from simple serial instruments to complex multi-drop networks, without needing additional converters or signal conditioners.

The PROSOFT 3100-INUSA internally manages up to 100 command list entries, including conditional writes, event-driven commands, and adjustable polling intervals. This offloads the main PLC processor from repetitive communication tasks, resulting in faster system response times and simpler ladder logic programming.

With an operating temperature range of 0°C to 60°C, optical isolation, and compliance with Class I Division 2 hazardous location standards, the PROSOFT 3100-INUSA is designed to perform reliably in demanding settings such as oil and gas facilities, chemical plants, and heavy manufacturing environments.

The 3100-INUSA PROSOFT Communication Interface Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
PROSOFT 3100-INUSA Communication Interface 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.
PROSOFT 3100-INUSA Communication Interface Module

General

  • Manufacturer PROSOFT
  • Model 3100-INUSA
  • Condition New Original ready stock
  • Product Family 3100-MDA4,3100-MDA16,3300-MBP
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.
  • Temperature Extremes – Rated for operation from 0°C to 60°C (32°F to 140°F) and storage from -40°C to 85°C (-40°F to 185°F), the PROSOFT 3100-INUSA handles both hot control rooms and unheated outdoor enclosures.
  • Mechanical Stress – Withstands operational shock of 30g, non-operational shock of 50g, and vibration of 5g from 10 Hz to 150 Hz, making it suitable for installations near heavy machinery, compressors, or engines.
  • Electrical Noise – The PROSOFT 3100-INUSA provides 500V optical isolation between the field side (communication ports) and the backplane, protecting the PLC from ground loops, surges, and electromagnetic interference common in industrial plants.
  • Humidity & Contaminants – Operates reliably in 5% to 95% relative humidity (non-condensing) and is coated for resistance to airborne contaminants such as dust and light chemical vapors when mounted in a suitable IP54 enclosure per ATEX requirements.
  • Rockwell Automation 1771 Platform – The PROSOFT 3100-INUSA is physically and electrically compatible with the 1771 I/O chassis and supports block transfer (BTR/BTW) communication with PLC-2, PLC-3, and PLC-5 processors.
  • Modbus Device Ecosystem – Interoperates with thousands of devices that support Modbus RTU or ASCII protocols, including Schneider Electric, ABB, Siemens, Yokogawa, Emerson, and generic Chinese instruments, using standard function codes 1,2,3,4,5,6,15,16.
  • Serial Interface Flexibility – Each port can be independently configured for RS-232 (point-to-point), RS-422 (4-wire multi-drop), or RS-485 (2-wire multi-drop), ensuring compatibility with nearly any legacy or new serial device without external converters.
  • Software & Configuration Tools – Configured entirely through the PLC’s ladder logic and data tables (no separate software package required). The PROSOFT 3100-INUSA works with Rockwell’s RSLogix 5 and older APS programming software, maintaining compatibility with legacy engineering workstations.
  • Process Control & Monitoring – The PROSOFT 3100-INUSA is widely used in oil & gas, chemical, and water treatment facilities to read flow rates, tank levels, and pressure values from Modbus-compatible transmitters into a central PLC for alarming and historical logging.
  • Factory Automation & Machine Integration – Connect variable frequency drives (VFDs), barcode scanners, weigh scales, and robot controllers to a Rockwell PLC, enabling coordinated production line control and real-time performance data collection.
  • SCADA & Remote Telemetry – When deployed with radio or cellular modems, the PROSOFT 3100-INUSA acts as a remote terminal unit (RTU) interface, gathering data from wellheads, pump stations, or environmental monitors and forwarding it to a central SCADA host.
  • Legacy System Upgrades – Modernize older control systems by using the PROSOFT 3100-INUSA to add Modbus communication capability to existing 1771-based PLCs, avoiding a costly full controller upgrade.
Description
The PROSOFT 3100-INUSA serves as a critical bridge in industrial automation networks, allowing Rockwell Automation 1771-based PLCs to communicate effortlessly with a wide range of Modbus protocol-compatible equipment. Whether you are connecting variable frequency drives, flow computers, SCADA systems, or remote terminal units (RTUs), this module ensures reliable and deterministic data transfer. It supports both Modbus RTU and ASCII modes, offering flexibility to integrate with new or existing installations.

Engineered for demanding industrial environments, the PROSOFT 3100-INUSA features two fully configurable serial ports supporting RS-232, RS-422, and RS-485 interfaces. This flexibility allows the module to operate in multi-drop networks or point-to-point configurations, making it suitable for factory automation, process control, and remote monitoring applications. The module’s optical isolation provides robust protection against electrical noise and ground loops, ensuring stable operation even in electrically harsh settings.

From an operational standpoint, the PROSOFT 3100-INUSA significantly reduces PLC ladder logic complexity. It handles all Modbus message formatting, command scheduling, and error handling internally. With support for up to 100 command list entries, event-driven writes, and user-defined polling intervals, the module empowers engineers to build efficient and responsive communication systems without burdening the main PLC processor.
Alternative Names
3100INUSA 31OO-INUSA 3I00-INUSA 3100-1NUSA 3300-MBP 3100-MCM 3100-LTQ 3100-MDA4
Technical notes
The PROSOFT 3100-INUSA is a single-slot communication interface module designed specifically for the Rockwell Automation PLC-5 platform, equipped with two DB25 serial interfaces. Through simple ladder logic and configuration registers, this module efficiently enables interface communication and data integration for the SEABUS Plus master protocol.
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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.
What is the primary function of the PROSOFT 3100-INUSA in an industrial control system?
The PROSOFT 3100-INUSA acts as a dedicated communication gateway that allows Rockwell Automation 1771 PLCs to exchange data with Modbus-compatible devices such as drives, flow meters, and remote I/O. It handles all protocol conversion and message scheduling, freeing up the PLC processor for core control tasks.
How can I tell if the PROSOFT 3100-INUSA is operating correctly without connecting a computer?
The PROSOFT 3100-INUSA features a comprehensive set of front-panel LEDs (ACT, FLT, CFG, BPLN, ERR1, ERR2, TXD, RXD) that provide real-time diagnostic information. For example, a fast-blinking green ACT LED indicates normal operation, while a steady ERR LED suggests a port configuration error or missing CTS signal.
Is the PROSOFT 3100-INUSA suitable for use in hazardous or explosive environments?
Yes. The PROSOFT 3100-INUSA carries ATEX (Category 3, Zone 2) and ANSI/ISA 12.12.01 (Class I, Division 2, Groups A, B, C, D) certifications. It is approved for installation in areas where explosive gases or dusts may be present, provided proper wiring methods are followed.
What should I do if the PROSOFT 3100-INUSA stops communicating with a slave device?
First, check the ERR1 or ERR2 LEDs and read the Master Error Status Table via ladder logic. Common causes include a missing RTS-CTS jumper, incorrect baud rate or parity settings, or a timeout error. The PROSOFT 3100-INUSA will automatically retry failed commands up to three times before moving to the next command.