ABB – TA5142‑RS485W – RS‑485 Serial Adapter Option Board (1SAP187300B0203)

The ABB TA5142‑RS485W (P/N 1SAP187300B0203) is a rugged, wide-temperature RS‑485 serial interface module designed for the AC500‑eCo (PM50xx) PLC platform. It allows flexible configuration via Automation Builder for communication protocols like Modbus RTU. Engineered for reliable front-panel mounting, it includes spring-cage terminals and is ideal for industrial networking in harsh environments.

Key Features:

• Model / Part No.: TA5142‑RS485W – 1SAP187300B0203  

• Interface: EIA‑RS‑485, non‑isolated, supports 9.6–115.2 kbps  

• Configurable Protocols: Modbus RTU, CAA serial comm, programmable via Automation Builder  

• Connection: 5‑pin spring terminal front-block (3.50 mm pitch) included  

• Mounting: Front-mount option board on PM50xx CPU or COMx slot  

• Power Consumption: ≈ 25 mA from internal 24 V DC rail  

• Temperature Range: Wide-temp version suitable for industrial environments  

• Weight: Lightweight (~15 g)  

Applications:

• Add-on serial communication (RS‑485) for AC500‑eCo PLCs

• Fieldbus integration in compact control panels

• Interfaces for remote I/O, drives, meters, or SCADA via Modbus RTU

• Industrial environments requiring robust temperature tolerance