Configured for high-density logic execution and multi-rack communication in Series 90-30 platforms, the GE Fanuc IC693CPU351 (IC693CPU351 CPU Module) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC693CPU351 |
| Brand | GE Fanuc / Emerson |
| Origin | USA / As specified on hardware label |
| Weight | 2.06 lbs (0.94 kg) |
| Dimensions | Standard single-slot Series 90-30 module width |
| Operating Temp | 0 to 60 deg C (32 to 140 deg F) |
| Power Consumption | 890 mA @ 5 VDC |
| Processor Type | 80386EX @ 25 MHz |
| User Memory | 240 KB (Firmware release 9.0+); 80 KB (Prior to release 9.0) |
| Typical Scan Rate | 0.22 ms per 1K of Boolean logic |
| Discrete I/O Capacity | 2048 %I inputs, 2048 %Q outputs |
| Analog I/O Capacity | Up to 32,640 %AI words, 32,640 %AQ words |
| Serial Interfaces | 3 Ports (Power Supply SNP/SNPX Slave port; Ports 1 & 2 supporting RTU Slave, SNP/SNPX Master/Slave) |
| Baseplate Expansion | Up to 7 expansion baseplates or 7 remote I/O baseplates |
Firmware Flash Compatibility and I/O Density Scaling
The IC693CPU351 integrates an 80386EX processor operating at a clock frequency of 25 MHz to achieve deterministic scan velocities down to 0.22 ms per 1K of Boolean logic. Upgrading the unit to firmware release 9.0 or higher unlocks user application memory up to 240 KB. The architecture supports continuous backplane communication across a CPU baseplate while driving up to 7 extension or remote I/O racks. This enables high-density scaling across 2048 discrete input/output channels and up to 32,640 words of analog processing references without degrading serial port polling cycles.
Frequently Asked Questions
Q: What are the backplane power supply current requirements for the IC693CPU351 CPU module? A: The IC693CPU351 module requires a continuous load of 890 mA at +5 VDC from the local backplane power supply.
Q: How do the built-in serial communication ports operate on the IC693CPU351? A: The CPU utilizes 3 serial ports: the port located on the system power supply connector supports SNP and SNPX slave protocols, while Port 1 and Port 2 support Modbus RTU slave as well as SNP/SNPX master or slave configurations.
Field Installation Guidelines
- Ensure system power is disconnected from the baseplate prior to inserting or removing the single-slot IC693CPU351 module into Slot 1.
- Secure the top and bottom module retaining hooks to ensure solid mechanical contact and proper backplane ground grounding.
- When utilizing serial communications on Ports 1 and 2, install shielded twisted-pair cables with proper drain wire termination to prevent signal distortion from industrial high-frequency electrical noise.
- Connect the memory backup battery to the module header to preserve volatile program memory and real-time clock state during power supply de-energization.
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