ABB – TA5142‑RS485 – RS‑485 Serial Adapter Option Board (1SAP187300B0003)

The ABB TA5142‑RS485 (part number 1SAP187300B0003) is a versatile non‑isolated RS‑485 serial communication option board for ABB’s compact AC500‑eCo PLC series. Plugging into the COMx expansion slot, it enables Modbus RTU or CAA serial communication configured via Automation Builder. Featuring a front-mount 5‑pin spring‑cage terminal block, it supports reliable data exchange in industrial control systems.

Key Features:

• Model / Part No.: 1SAP187300B0003 (TA5142‑RS485)  

• Interface: EIA‑RS‑485 (non‑isolated); 9.6–115.2 kbps serial rate  

• Protocols: Modbus RTU, CAA SerialCom — configurable in Automation Builder  

• Connectors: 5‑pin spring‑cage terminal block (3.50 mm pitch), front-mounted  

• Power Usage: Powered from AC500‑eCo CPU; draws up to 25 mA @ 24 V DC  

• Mounting: Fits into COMx slot of PM50xx series CPU modules  

• Operating Range: Standard industrial temperature; lightweight (~15 g)