F8621A HIMA Coprocessor Module – 10 MHz 384KB RAM

HIMA F8621A Coprocessor Module – Dedicated Processing for PES H51q Systems

Key Technical Specifications

• Brand: HIMA
• Model: F8621A
• Category: Coprocessor Module for PES H51q
• Microprocessor: Hitachi HD64180, 10 MHz clock frequency
• Memory: 384 kbyte static CMOS-RAM and EPROM on 2 ICs
• RAM buffering: Battery-backed via HIMA F7131 power supply monitoring module
• Dual Port RAM: High-speed memory access to the second central module
• Operating system: EPROM firmware for PLC master project execution
• Power consumption: 5 V DC, 360 mA
• Space requirement: 4 TE (4 width units)
• Galvanically isolated RS 485: Two half-duplex channels with independent communication processors
• Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps
• Rate configuration: Software selectable or DIP switch takeover from CU

RS 485 Interface Pin Allocation

• Pin 1: Not used
• Pin 2: RP, 5 V decoupled by diodes
• Pin 3 (A/A): RxD/TxD-A, Receive/Transmit-Data-A
• Pin 4: CNTR-A, Control signal A
• Pin 5 (C/C): DGND, Data Ground
• Pin 6: VP, 5 V positive pole of power supply
• Pin 7: Not used
• Pin 8 (B/B): RxD/TxD-B, Receive/Transmit-Data-B
• Pin 9: CNTR-B, Control signal B

Communication and Processing Features

• Dual communication processors: Each RS 485 interface has its own dedicated communication processor
• Baud rate flexibility: Software configurable or inherits CU DIP switch settings
• Maximum transmission speed: Up to 57600 bps on both channels
• Galvanic isolation: Protects against ground loops and voltage transients
• Dual Port RAM interface: Connects directly to Bus 1 for fast data exchange
• Master project storage: RAM retains PLC project via external battery backup

Frequently Asked Questions

• What CPU does the F8621A use?
  It uses the Hitachi HD64180 microprocessor running at 10 MHz.
• How much memory does the F8621A have?
  It contains 384 kbyte static CMOS-RAM and EPROM distributed across two ICs.
• How is the RAM powered during a power loss?
  The F8621A relies on the F7131 power supply monitoring module for battery buffering.
• What baud rates does the RS 485 support?
  It supports 300 to 57600 bps including 9600, 19200, 38400, and 57600 bps.
• Can I set the baud rate manually?
  Yes, software can set the rate or you can take over values from the CU DIP switch.
• Is the F8621A compatible with H41q systems?
  No, this module is specifically designed for PES H51q systems only.
• What is the physical width of the F8621A?
  It occupies 4 TE, equivalent to 4 width units at 5.08 mm each.
• Is this module new and original?
  Yes, every F8621A is brand new and factory-sealed HIMA product.

Contact Information
Inquiries: sales@nex-auto.com
WhatsApp: +86 153 9242 9628

Partner: NexAuto Technology Limited