I. Basic Information

Model: F8653X

Brand: HIMA (Germany)

Series: HIQuad H41q/H51q (runs on the same platform as the secure CPU, but not certified for security)

Type: Dual CPU redundancy (non-security lockstep)

Security Level: No SIL certification (only for the non-security side)

Installation: 19" rack, 8SU width (standard model)

Status: In service, F865x series non-security CPU

II. Hardware Core Specifications

Processor: 2×Intel 386EX 32-bit RISC, 25MHz, dual CPU redundancy (non-lockstep)

Memory (per CPU):

System Flash: 1MB

User Program Flash: 1MB

Data SRAM: 1MB

Size: 163mm × 80mm × 58mm (same as F8652X)

Weight: Approximately 0.5kg

III. Electrical Parameters

Power Supply: 24VDC (18~30VDC), redundant power input

Power Consumption: Typical 5W, maximum ≤ 8W

Safety Watchdog: None (non-safety design)

IV. Communication Interfaces (same as F8652X)

Serial Port: 2×RS485 (electrical isolation, supports Modbus RTU)

Ethernet: Single port 10/100Mbps (Modbus TCP/IP, HIMax protocol)

Backplane Bus: Special I/O bus, connects H41q/H51q series I/O modules

V. Environment and Reliability

Operating Temperature: 0℃ ~ +60℃ (industrial standard)

Storage Temperature: -40℃ ~ +85℃

Humidity: 5%~95%, no condensation

Protection Grade: IP20

Redundancy: Dual CPU redundancy (no safety lockstep, no safety voting in case of failure)

Maintenance: Supports hot swapping

VI. Core Functions (Position: Non-safety Control)

Non-safety Logic Control: Used for non-safety interlocks, data processing, and conventional PLC logic.

Data Acquisition and Forwarding: Collects non-safety I/O data from the field and uploads it to DCS / safety CPU.

Communication Management: Acts as a gateway to achieve communication between the safety system and third-party devices (such as HMI, upper computer).

Large-capacity Processing: Supports up to 2048 points of I/O (same as F8652X), suitable for medium and large-sized non-safety side control