2080-SERIALISOL | Allen-Bradley | Serial Communication Module

Configured for serial data exchange in Micro800 control platforms, the Allen-Bradley 2080-SERIALISOL (2080-SERIALISOL Serial Communication Module) provides direct physical/electrical execution of isolated communication links. The module serves as a plug-in interface supporting RS-232 and RS-485 physical standards, enabling communication via Modbus RTU or ASCII protocols with a 500 V AC isolation rating.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

The 2080-SERIALISOL integrates into the controller backplane to bridge serial communication data into the broader control architecture. While the module manages serial streams, overall network determinism is maintained by the host controller's communication stack. Users must ensure that firmware flash compatibility is verified against the specific Micro800 controller revision to ensure correct protocol handling for Modbus RTU or ASCII framing. The isolation barrier provided by this module is designed to suppress electrical noise and ground loops in serial environments, supporting stable data throughput and reducing packet errors in long-run RS-485 configurations.

Frequently Asked Questions

Q: Does this module support hot-swapping during controller operation?

A: No. Micro800 plug-in modules must be installed or removed only when the controller is de-energized to prevent damage to the backplane pins and internal communication circuitry.

Q: Is external termination required for RS-485 operation?

A: Yes. When utilizing the RS-485 interface in a multi-drop network, ensure proper 120 Ohm termination resistors are installed at both physical ends of the communication bus to mitigate signal reflections.

Field Installation Guidelines

• Physical Mounting: Insert the module into the designated plug-in slot on the Micro800 controller. Secure the module using the provided screw mounting point to ensure mechanical stability. Tighten the mounting screw to a torque of 0.2 N·m.
• Wiring and Termination: Use the integrated terminal block for signal wiring. Tighten terminal screws to a torque range of 0.22 to 0.25 N·m. Excessive torque may strip the terminal block or damage the internal connector pins.
• Shielding and Grounding: For RS-485 configurations, connect the cable shield to a single point earth ground to minimize common-mode interference. Do not ground both ends of the cable shield to avoid ground loops.
• Cable Routing: Keep serial communication cables separated from AC power lines and motor drives by at least 150 mm to prevent electromagnetic interference (EMI) from affecting data integrity.