Emerson IC695CPU315 PACSystems RX3i CPU
A dual-backplane RX3i controller with 20 MB user memory, non-volatile flash storage and embedded RS-232/RS-485 communications.
Key Information
IC695CPU315 is a PACSystems RX3i central processing unit for real-time machine, process and material-handling control. Manufacturer product information identifies 20 MB of battery-backed user RAM and 20 MB of non-volatile flash user memory.
The controller uses the RX3i PCI and high-speed serial backplane buses, supports as many as 512 program blocks and provides embedded RS-232 and RS-485 interfaces. The complete hardware suffix and installed firmware remain essential for a controlled spare match.
Functions
- Executes PACSystems control programs with floating-point support.
- Maintains discrete, analog and symbolic reference data within the documented memory limits.
- Communicates through embedded RS-232 and RS-485 ports using Modbus RTU Slave, SNP and Serial I/O protocols.
- Supports RX3i PCI and high-speed serial backplane modules in an approved rack configuration.
- Stores a recoverable application in non-volatile flash while battery-backed RAM supports retained operation.
Specifications
| Manufacturer | Emerson / GE Intelligent Platforms |
|---|---|
| Model | IC695CPU315 |
| Product Family | PACSystems RX3i |
| Product Type | Central processing unit |
| Program Storage | Up to 20 MB battery-backed RAM |
| Non-Volatile User Memory | 20 MB flash |
| Program Blocks | Up to 512; 128 KB maximum per block |
| Discrete References | 32 Kbits each for %I and %Q |
| Analog References | Configurable up to 32 Kwords each for %AI and %AQ |
| Symbolic Memory | Configurable up to 20 MB |
| Embedded Communications | RS-232 and RS-485 |
| Serial Protocols | Modbus RTU Slave, SNP and Serial I/O |
| Backplane | RX3i PCI and high-speed serial bus |
| Power Requirement | 1.0 A at 3.3 VDC; 1.2 A at 5 VDC nominal |
| Operating Temperature | 0 to 60 °C |
| Clock Accuracy | Maximum drift 2 seconds per day |
| Elapsed-Time Clock Accuracy | 0.01% maximum |
| Floating Point | Supported |
| Revision Control | Confirm the complete hardware suffix and firmware from the installed label |
Installation
- Create verified backups of RAM, flash, configuration, reference data and communication settings before removal.
- Photograph the complete IC695CPU315 label, slot, rack, power supply, battery arrangement and every serial connection.
- Check rack power, backplane compatibility, programming-software version and option-module firmware before fitting the spare.
- Restore the approved project and separately verify serial port mode, baud rate, addressing and multidrop wiring.
- Complete controlled restart, retained-data, I/O, communications and machine-interlock tests before production release.
Lifecycle
- Record the complete IC695CPU315 suffix, firmware and battery condition in the asset register.
- Review release notes before changing firmware because hardware and programming-software boundaries are revision dependent.
- Maintain current flash and offline project backups so a battery or RAM event does not become a recovery delay.
- Treat migration to a CPE controller as an engineered conversion involving project, rack, communications and cybersecurity review.
FAQ
What should be included in an IC695CPU315 replacement quotation?
Provide the full IC695CPU315 label and suffix, firmware, PAC Machine Edition version, rack and power-supply models, battery arrangement, option modules and serial-network details.
Can IC695CPU315 be replaced by a newer RX3i CPE without project changes?
No drop-in assumption is safe. Memory behavior, ports, protocols, rack loading, firmware and the application must be reviewed and tested as a migration.
How should IC695CPU315 retained data be protected during maintenance?
Save RAM and flash content, export reference data that matters to the process, verify the battery condition and preserve a tested offline recovery package before power is removed.
What serial checks matter after installing IC695CPU315?
Confirm RS-232/RS-485 mode, wiring, termination, baud rate, parity, station identity and every Modbus RTU, SNP or Serial I/O session.
Which evidence should close an IC695CPU315 exchange?
Retain the old and new labels, firmware record, project checksum, flash verification, battery status, communication results, I/O tests and restart approval.
