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The GE IC693PCM300, also cataloged as the IC693PCM300 Programmable Coprocessor Module, operates as a dedicated hardware component for protocol execution and co-processing tasks within Series 90-30 system platforms.

Hardware Specifications

Parameter Specification
Model IC693PCM300
Brand GE Fanuc Emerson
Origin USA / Global Manufacturing
Weight 0.34 kg (0.75 lbs)
Dimensions Single-Slot Series 90-30 Module Form Factor
Operating Temp 0 to 60 deg C
Power Consumption Power supplied via Series 90-30 CPU baseplate bus
Series Series 90-30
Product Type Coprocessor Modules
Total RAM 160 KB
User MegaBasic Memory 35 KB
Port 1 Interface RS-232 connection
Port 2 Interface RS-485 connection
Protocols Supported Modbus RTU, GE Fanuc CCM
Memory Backup Lithium battery for RAM memory retention
Programming Languages MegaBasic, C language
Status Display Integrated LED indicator lights
Mounting Location CPU Baseplate

Backplane Bus Communication Velocity and Firmware Integration

The IC693PCM300 offloads complex serial communication tasks and custom algorithms from the main processor core, maintaining deterministic backplane bus communication velocity across the Series 90-30 baseplate. The onboard dual-port structure (RS-232 and RS-485) executes Modbus RTU and GE Fanuc CCM protocols directly to interface with operator CRTs and field devices.

Firmware flash compatibility allows execution of application programs compiled in C or MegaBasic utilizing up to 35 KB of dedicated MegaBasic user memory. The 160 KB total RAM capacity supports real-time data buffer storage and protocol conversion routines without degrading control cycle execution times.

Frequently Asked Questions

Q: What serial interface protocols are natively supported by the IC693PCM300?

A: The module natively supports Modbus RTU and GE Fanuc CCM communication protocols via its dual serial ports.

Q: How is application program data retained in the IC693PCM300 RAM memory during a power supply failure?

A: RAM memory retention is powered by an onboard lithium backup battery.

Q: Where must the IC693PCM300 be physically mounted within a Series 90-30 rack?

A: The module must be installed directly on a Series 90-30 CPU baseplate slot to interface with the main processor bus.

Field Installation Guidelines

  • Verify that the Series 90-30 baseplate power is entirely shut off before seating or removing the IC693PCM300 module from the rack chassis.
  • Install the lithium backup battery into its module compartment prior to commissioning to ensure RAM memory retention upon power interruption.
  • Ensure RS-232 and RS-485 communication cables are constructed using shielded twisted-pair conductors, with shields grounded at a single point to prevent ground loop noise.
  • Maintain proper clearance around the baseplate assembly to enable passive convection cooling in non-corrosive industrial operating environments.

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