CSP CSP-CSR70 Serial Communication Module

Key Features

• Multi-standard serial ports – Typically selectable RS‑232/RS‑422/RS‑485 to cover most field device connections.
• Modbus RTU/ASCII support – Works as master or slave in many cases, simplifying PLC/SCADA integration.
• Galvanic isolation – Isolated signal paths help reduce ground loops and EMI issues in noisy panels.
• 24 VDC power, low consumption – Practical for brownfield cabinets with limited auxiliary power.
• DIN‑rail mounting – Quick install in standard 35 mm cabinets; you might notice it fits neatly next to power supplies and I/O.
• Status LEDs – Clear TX/RX and fault indicators speed up commissioning and troubleshooting.
• Wide operating range – Typically suitable for light industrial environments, supporting stable operation over extended hours.

Technical Specifications

Note: Specifications below reflect common configurations for this model family; minor variations may exist by revision. We confirm details before shipment.

Application Fields

• Factory automation: linking PLCs with VFDs, HMIs, weigh scales, barcode/RFID readers via Modbus RTU.
• Process industries: integrating transmitters, analyzers, and legacy controllers into SCADA.
• Utilities and water: pump station telemetry over RS‑485 multi-drop lines.
• Intralogistics: conveyor drives and sortation devices that still rely on serial protocols.

Advantages & Value

• Reliability – Isolated ports and conservative thermal design usually reduce nuisance downtime.
• Compatibility – Broad serial standards and common Modbus profiles ease mixed‑vendor projects.
• Cost savings – Lets you keep existing meters and drives instead of replacing them just for Ethernet.
• Support – We can supply pinouts, sample Modbus maps, and wiring tips based on your device list.

A maintenance lead told me they swapped in a CSR70‑class unit during a weekend shutdown and had four RS‑485 loops stable by Monday—no PLC code rewrite, just a few Modbus register tweaks. That’s usually where these modules shine.

Installation & Maintenance

• Cabinet – Mount on a 35 mm DIN‑rail in a ventilated enclosure; keep at least 25 mm clearance for airflow.
• Power & wiring – Use a regulated 24 VDC supply; follow shielded twisted pair for RS‑485 with proper A/B polarity and common reference.
• Termination & bias – Fit end‑of‑line 120 Ω termination and biasing where required; only at the bus ends.
• Grounding – Bond shields at one point to avoid loops; isolation helps, but clean grounding is still key.
• Routine checks – Re‑tighten terminal screws after thermal cycles, clean dust quarterly, and keep a note of firmware revs for reproducibility.

Quality & Certifications

• CE marking and RoHS compliance in most cases; documentation available upon request.
• UL/CSA recognition may apply to certain revisions or accessory power supplies; we can verify per batch.
• Manufacturer’s warranty: 12 months (365 days). Units are function‑tested prior to dispatch.

Common Accessories (on request)

• 24 VDC DIN‑rail power supply (30–60 W depending on cabinet load)
• RS‑485 termination/bias plug‑in resistor kit
• Shielded twisted‑pair cables and panel feed‑throughs for service ports
• DIN‑rail surge protection for serial lines in high‑noise areas

If you share your device list (model and protocol), we’ll propose a wiring map and confirm port settings so you can commission with minimal trial‑and‑error.