Prosoft MVI56-103M – IEC 60870-5-103 Master Communication Module for ControlLogix

The Prosoft MVI56-103M brings IEC 60870-5-103 master capability directly into a 1756 ControlLogix chassis. If you’re tying protective relays and substation IEDs into a Rockwell controller, this in-chassis module typically saves cabinet space and cuts down on gateway complexity. From my experience, you get deterministic data exchange through the backplane, clean tag mapping into Studio 5000, and flexible serial options for multi-drop RS-485 networks common in power systems.

One thing I appreciate is how quickly it slots into existing architectures—no external DIN-mounted gateway, fewer failure points, and diagnostics you can actually use during commissioning. A utility customer told us they pulled event and fault records from a yard of legacy relays in a single afternoon, without rewriting their whole PLC strategy.

Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: 1 week for in-stock; no more than one month at the latest
• Payment terms: 50% advance payment; full payment for delivery
• Express delivery options: FedEx, UPS, DHL

Key Features

• IEC 60870-5-103 Master for ControlLogix – Communicates with protective relays and IEDs using the 103 protocol, mapped into controller tags for fast logic development.
• In-chassis integration – Uses the 1756 backplane, so there’s no external gateway or extra Ethernet hop; you’ll typically see lower latency and simpler troubleshooting.
• Flexible serial ports – Two application serial ports (software-selectable RS-232/422/485), plus a dedicated configuration/debug port to streamline setup and field diagnostics.
• Multi-drop RS-485 – Supports multi-drop topologies commonly used in substations; termination and biasing can be tuned for longer runs.
• Robust data handling – Buffered event retrieval and time-stamped data are exposed to the PLC—handy for SOE and fault analysis.
• Engineering tools – Configured with ProSoft Configuration Builder (PCB); Add-On Instructions for Studio 5000 typically make tag mapping and status monitoring straightforward.
• Diagnostics you can trust – Port-level statistics, status words, and module health tags help you isolate cabling or protocol issues quickly.

Technical Specifications

Related or Supporting Products

• Prosoft MVI56-101S / MVI56-101M – IEC 60870-5-101 slave/master variants for serial-based SCADA links. Typically chosen for legacy RTU integrations.
• Prosoft MVI56-104S – IEC 60870-5-104 server over Ethernet. Useful when the SCADA master is IP-based and you want in-chassis data exchange.
• 1756-A4 / A7 / A10 Chassis – ControlLogix chassis options depending on slot count and expansion plans.
• 1756-PA72 / 1756-PB72 Power Supplies – Common power supplies; verify total backplane load with the MVI56-103M added.
• Shielded RS-485 cabling & DB9 adapters – For long runs and cleaner signals; in many cases, a DB9-to-screw-terminal adapter makes field wiring easier.
• Time synchronization in the PLC – If you rely on SOE, consider controller time sync (e.g., CIP Sync/GPS at the system level) to align event stamps.

Installation & Maintenance

• Cabinet & environment – Mount in a 1756 chassis with adequate ventilation; keep ambient typically below 60 °C. Maintain clearance for airflow and service.
• Grounding & shielding – Bond the chassis to a low-impedance earth. Use shielded twisted-pair for RS-485, and ground the shield at one end to reduce noise loops.
• Wiring tips – For multi-drop RS-485, add 120 Ω termination at the ends and apply biasing as needed. Keep stubs short; route away from high-voltage cables.
• PLC integration – Import the AOI/UDTs, assign tags, and verify buffer sizes for event records. You might notice quicker commissioning if you stage one relay first, then scale.
• Safety – De-energize before insertion/removal. Observe ESD precautions when handling the module and serial connectors.
• Routine maintenance – Periodically check port statistics and error counters, confirm termination integrity, and review time synchronization. Update firmware through ProSoft Configuration Builder when qualified.
• Backup & documentation – Export PCB project files and controller ACD backups after any change; it seems to prevent most rollback headaches.

Quality & Certifications

• CE and UL/cUL compliance (industrial control equipment); RoHS compliant in most cases
• Manufacturer hardware warranty typically 1 year; our coverage is 365 days as stated above
• Manufactured by Prosoft Technology with lifecycle support and firmware updates