The GE Fanuc IC695CMU310, also cataloged as the IC695CMU310 Max-On Hot-Standby Redundancy CPU, operates as a dedicated hardware component for central processing and redundant system execution within PACSystems RX3i networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC695CMU310 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 0.94 lbs (0.43 kg) |
| Dimensions | Single-slot RX3i module width |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 1.0 A at +5 VDC and 1.25 A at +3.3 VDC |
| Execution Speed | 0.195 ms per 1000 Boolean contacts or coils |
| Memory Capacity | 10 MB battery-backed RAM and 10 MB non-volatile flash user memory |
| Serial Interfaces | 1 x RS-232, 1 x RS-485 embedded ports |
| Protocol Support | Modbus RTU Slave, SNP, Serial I/O |
| Backplane Compliance | PCI 2.2 standard, dual backplane architecture |
| Logic Capacity | Up to 512 program blocks, auto-located symbolic variables |
| Mode Control | 3-position toggle switch |
Backplane Bus Communication Velocity & Redundant Execution
The IC695CMU310 processor interfaces directly with the RX3i PCI 2.2 backplane bus, enabling backplane bus communication velocity and high-speed data synchronization across dual backplane configurations. Designed for integration with Max-On software and dedicated Ethernet networks, the unit processes logic at 0.195 ms per 1000 Boolean operations while executing floating-point math functions. Firmware flash compatibility supports up to 512 program blocks and reference table bulk memory accessing. The CPU draws 1.0 A at +5 VDC and 1.25 A at +3.3 VDC from the backplane, relying on an external battery pack to retain 10 MB of RAM user memory during system power outages.
Frequently Asked Questions
Q: What are the backplane power supply current requirements for the IC695CMU310 CPU?
A: The module requires 1.0 A at +5 VDC and 1.25 A at +3.3 VDC from the RX3i backplane power supply.
Q: Which serial communication protocols are natively supported on the embedded serial ports?
A: The onboard RS-232 and RS-485 ports natively support Modbus RTU Slave, SNP, and Serial I/O protocols.
Q: How is the execution mode of the processor controlled manually on the front panel?
A: Hardware mode selection is managed via a 3-position toggle switch located on the front panel alongside diagnostic LED status indicators.
Field Installation Guidelines
- De-energize and lock out all backplane power supplies before inserting or removing the CPU from the baseplate rack.
- Connect the lithium battery pack to the CPU battery connector to ensure non-volatile user RAM retention prior to installation.
- Align the single-slot CPU module with the dedicated CPU slot in the RX3i universal backplane and seat the rear PCI connector completely.
- Tighten panel retention screws to secure the unit against backplane vibration and ensure frame grounding.
- Wire serial communication cables using shielded twisted-pair conductors, terminating shields at a single chassis ground point to avoid ground loops.
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