16-bit registers used for numerical manipulation, timer presets, and tracking counter accumulations. Programming & Instruction Set IDEC FA2J PLC Specifications Guide | PDF - Scribd
| | Type | Primary Use | Availability / Notes | |---------------------------------------|-------------------|---------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------| | FA2J User Manual (EM325-0) | Official Manual | Hardware setup, installation, specifications. | Not available as a PDF; physical copies may be sourced from third-party vendors. | | WindLDR Reference Manual | Software Manual | Ladder logic programming, software configuration, online monitoring. | Available as a PDF from IDEC and third-party sites. Essential for all FA2J programming tasks. | | Square D Symax 50 Manual | Cross-reference | Hardware and basic instruction set (rebadged FA1J). | Free download from Square D's website. Covers most FA2J hardware details. | | FA2J Catalog PDF | Product Catalog | Instruction set, basic specifications, and overview. | Available from various industrial automation websites. | | Idec Serial Driver Help | Communication Doc | SCADA/HMI integration, addressing, communication parameters (ASCII protocol). | PDF manual available from OPC server providers and IDEC. Essential for system integrators. | | WindLDR Software | Programming Tool | Developing, editing, monitoring, and downloading ladder logic programs. | Available from IDEC distributors. Required for all FA2J programming tasks. | | FC9Y-LP2CDW Software | Software Accessory| Advanced features, protocols, or configuration for FA2J series. | Available from IDEC or electronic component distributors. | | PFA-1A51, PF2-CLA, PFA-1A54A Cables | Hardware Cables | Connecting a PC to the FA2J PLC. | Available from IDEC distributors. | | FC2A-GWY-025-009-V00 Modbus Kit | Hardware Adapter | Enabling Modbus RTU communication for FA2J. | Available from IDEC distributors. |
Connection to a PC requires an RS-232 link adapter ( PF2-CLA ) and specific interface cables ( PFA-1A51 and PFA-1A54A ). Available Technical Resources
608 points (up to 240 can be "maintained" during power failure). Timers/Counters: 80 timers (10ms resolution) and 45 counters. Data Registers: 400 points. Programming and Communication idec plc fa2j manual
Supports up to 256 total I/O points (128 inputs, 128 outputs).
Solid ON: Fatal CPU hardware failure, memory corruption, or watchdog timer timeout. Try cycling power. If it persists, the CPU must be replaced.
Supports a balanced deployment of up to 128 physical inputs and 128 physical outputs . | | WindLDR Reference Manual | Software Manual
The FA2J accommodates both NPN (sink) and PNP (source) sensor configurations. Typically operate at 24V DC.
The provides critical technical specifications, hardware configuration details, and programming syntax for the legacy IDEC FA2J Flat-Pak Modular PLC system . Known also as the FA-2 Junior , this controller serves as an upgrade over the older FA1J model by delivering expanded computing functions, faster processing, and higher memory allocations. Understanding this manual is essential for engineers servicing legacy automation machinery, migrating to modern IDEC platforms, or performing system troubleshooting. Hardware Architecture and Module Specifications
The FA2J uses a proprietary serial port interface on the CPU faceplate. You generally need an IDEC FA-1A-K1C or PFA-1A-K1C link adapter to convert the internal TTL signal to RS-232C. | | Square D Symax 50 Manual |
A standard FA2J system can typically handle up to 128 local I/O points, depending on the specific CPU model and expansion modules used. Common Model Numbers
The base unit houses the processor, internal memory, power supply, and a fixed number of local inputs and outputs.
Verify that the "Battery Low" diagnostic flag or LED clears immediately. 6. Legacy Migration and System Modernization
Sinking type, typically rated for 0.5A at 24V DC. Best for high-speed switching applications like status indicator lights or solid-state relays. 3. Memory Mapping and Addressing