Description
📌 FANUC A20B‑2901‑0660 — PMC Module with PMC‑RA3 and SLC
Description:
The FANUC A20B‑2901‑0660 is a Programmable Machine Controller (PMC) module used inside FANUC CNC control systems. It implements the PMC‑RA3 ladder engine and includes an SLC interface, providing internal programmable logic control for machine auxiliary functions and I/O sequencing.
Key Details:
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Function: Executes PMC ladder logic — FANUC’s internal programmable logic controller subsystem — which handles machine control sequences, interlocks, and auxiliary logic.
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Features: Includes PMC‑RA3 ladder control engine and SLC interface for connecting and interfacing with other control logic or external systems.
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Module Type: Control PCB (printed circuit board) for industrial CNC use, typically installed in the controller’s electronics rack.
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Series: Part of the A20B‑2901 PMC family — PMC modules for FANUC CNC controllers.
Typical Use:
This module is used alongside the main CPU and other PMC and memory modules in FANUC CNC systems (such as Series 15, 16, 18, 21, etc.) to manage ladder logic tasks (e.g., interlock logic, auxiliary sequences, and machine I/O control). It enables the CNC to perform complex machine logic control internally without requiring an external PLC.
Installation & Position:
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Mounted on the controller rack backplane with other control modules.
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Works closely with main CPU, memory, and I/O modules to provide full machine control functionality.