Overview
The RX3i CPU is designed for real-time control of machines, processes, and material handling systems. It communicates with programming and HMI devices through a serial port using the SNP Slave protocol. The CPU interacts with I/O and smart option modules via a dual backplane bus that offers the following features:
- High-speed PCI backplane for fast throughput of new advanced I/O.
- Serial backplane for easy migration from existing Series 90-30 I/O.
Specifications
- CPU Performance: Refer to Appendix A of the PACSystems CPU Reference Manual, GFK-2222P or later for detailed performance data.
-
Battery:
- Lithium Smart Battery, IC695ACC302 (recommended)
- Series 90-30 Lithium Battery Pack, IC693ACC302
- Note: The IC698ACC701 Lithium Battery Pack is not compatible with the CPU315.
-
Program Storage:
- 20 MB of battery-backed RAM
- 20 MB of non-volatile flash user memory
-
Power Requirements:
- +3.3 VDC: 1.0 Amps nominal
- +5 VDC: 1.2 Amps nominal
-
Operating Temperature:
- 0 to 60°C (32°F to 140°F)
- Floating Point: Supported
-
Boolean Execution Speed:
- Typical: 0.047 ms per 1000 Boolean instructions
-
Time of Day Clock Accuracy:
- Maximum drift of 2 seconds per day
-
Elapsed Time Clock (Internal Timing) Accuracy:
- 0.01% maximum
-
Embedded Communications:
- RS-232, RS-485
-
Serial Protocols Supported:
- Modbus RTU Slave
- SNP
- Serial I/O
-
Backplane:
- Dual backplane bus support: RX3i PCI and high-speed serial bus
-
PCI Compatibility:
- Designed to be electrically compliant with PCI 2.2 standard
-
Program Blocks:
- Up to 512 program blocks
- Maximum size per block: 128KB
-
Memory:
- %I and %Q: 32Kbits for discrete
- %AI and %AQ: Configurable up to 32Kwords
- %W: Configurable up to the maximum available user RAM
- Symbolic: Configurable up to 20 MB
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