Ge Fanuc 90-30 PLC IC693CPU331 - Simple Guide for Electricians

Overview: The IC693CPU331 is a modular CPU that fits into a single slot on the baseplate. Unlike embedded CPUs, this model allows for more flexibility and expansion. It supports up to 5 baseplates in total, including one CPU baseplate and 4 expansion or remote baseplates, making it ideal for larger systems.

Key Features:

    Single-Slot CPU Module: The CPU is a plug-in module that occupies just one slot on the baseplate, allowing you to use the other slots for I/O or option modules.
    Expansion Support: You can connect up to 4 additional baseplates for expansion or remote use. This makes it highly flexible for larger installations.
    Backup Battery with Clock: This model has a battery-backed clock, so it can store time-based data even when the system is powered off.
    Built-in Serial Port: There’s 1 built-in serial port that supports SNP and SNP-X slave protocols. If you need master support or other communication protocols (like RTU), you'll need an additional CMM or PCM module.

Technical Details:

    Processor Speed: 10 MHz, which is faster than most basic CPUs.
    Scan Rate: It scans at 0.4 milliseconds per 1K of logic (boolean contacts).
    User Program Memory: Offers up to 16K bytes of memory, making it suitable for more complex programs.
    Input/Output Points: Supports 512 discrete input points and 512 discrete output points.
    Internal Coils: Includes 1024 bits for internal coils, and 256 bits for temporary output coils.
    Analog Inputs/Outputs: Supports 128 words of analog input and 64 words of analog output.
    Timers/Counters: Provides 680 timers and counters—plenty for most applications.
    Communications: Supports LAN, Ethernet, Profibus, FIP, and other communication modules. You can also use multi-drop connections via LAN.

Things to Watch Out For:

    Memory Storage: Uses RAM as the primary memory, but you can also add EPROM or EEPROM for more secure data storage.
    Extra Modules Required: If you need SNP/SNP-X master support, CCM, or RTU slave/master communication, you’ll need to add a CMM or PCM module.

The IC693CPU331 is a powerful and flexible CPU for larger systems that need more I/O and expansion capabilities. With its battery-backed clock, built-in communication options, and support for multiple baseplates, it’s a solid choice for more advanced applications.

>> IC693CPU331 User manual (pdf)

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