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The GE IC693CPU350-BC is a Series 90-30 CPU module that acts as the “brain” of the rack, executing user logic, coordinating I/O, and managing communications with HMI or SCADA systems. The GE IC693CPU350-BC is typically used in bottle-filling lines, packaging machines, and other discrete-manufacturing applications where moderate scan speed and reliability are required.

The GE IC693CPU350-BC supports timers, counters, shift registers, override functions, and a battery-backed clock, and can work with multiple racks and remote I/O via expansion modules. The GE IC693CPU350-BC also integrates SNMP/SNP-X and Ethernet-based protocols, so the GE IC693CPU350-BC can serve as a communication gateway in older PLC networks.

Model GE IC693CPU350-BC

Series GE Fanuc Series 90-30 PLC

CPU core 80386EX 32-bit processor, 25 MHz

Typical scan rate ~0.22 ms per 1K logic contacts

User program memory 32 KB maximum (non-configurable)

Register / internal memory Around 19.9 KB register memory (%I, %Q, %M, %T, etc.)

Discrete I/O capacity Up to 2,048 discrete input and output points in the system

Racks / baseplates Up to 8 baseplates (CPU + 7 local/remote)

Power supply Typically +5 VDC (670 mA from backplane); some external-DC variants specify 24 VDC ±15% for cabinet-type builds

Operating temperature 0–60 °C (standard) / some resellers list −40–+70 °C depending on version

Communication ports 1× built-in serial (SNP/SNP-X slave, optionally master via PCM/CCM); Ethernet-compatible LAN for multidrop, FIP, Profibus, GBC, GCM, etc.

Special features Floating-point math, battery-backed clock, periodic subroutine interrupts, override functions

Insert the GE IC693CPU350-BC into the Series 90-30 rack and ensure it is tightly seated and powered via the backplane (+5 VDC or 24 VDC as per the specific variant).

Power on the rack and verify the GE IC693CPU350-BC LEDs show a normal “RUN” or “OK” state; a missing or flashing LED usually indicates a configuration or power problem.

Use VersaPro or GE Fanuc PLC software to create a project, select GE IC693CPU350-BC as the CPU type, configure memory mapping, I/O modules, and communication ports.

Download the user program to the GE IC693CPU350-BC and switch the CPU to “RUN” mode, then monitor online status (%I, %Q, %M, etc.) to confirm logic execution.

Test sensors, actuators, and communication links to verify that the GE IC693CPU350-BC performs as expected in the real-world application.

Always confirm the correct power-supply level (backplane +5 VDC or panel-mounted 24 VDC) for the GE IC693CPU350-BC and ensure the cabinet has good grounding and over-current protection.

Handle the GE IC693CPU350-BC with ESD precautions and avoid inserting/removing the module while the rack is powered under load.

Mount the rack in a clean, vibration-limited enclosure with proper ventilation, as the GE IC693CPU350-BC is rated around 0–60 °C under normal conditions.

Double-check the I/O configuration and Ethernet/serial wiring before energizing field devices, to avoid incorrect bit-maps or communication faults in the GE IC693CPU350-BC.

Visually inspect the GE IC693CPU350-BC LED status and backplane connections during routine maintenance, especially after power outages or process upsets.

Periodically review program logs, scan-time information, and communication error counters to detect early-stage faults before the GE IC693CPU350-BC triggers a trip or alarm.

Clean the cabinet and check for dust or condensation around the GE IC693CPU350-BC slot, and keep spare CPUs available since the Series 90-30 platform is long-lifecycle/legacy.

If firmware updates exist for the GE IC693CPU350-BC, apply them in a planned maintenance window, preferably with a backup of the existing program and configuration.

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