Description
📌 Product Overview
The GE IC693CPU374-GV is a high-performance CPU module for the GE Fanuc Series 90-30 PLC platform. It combines a 133 MHz processor with 240 KB of user memory and an embedded 10/100 Mbps Ethernet switch, making it suitable for control systems that require both PLC processing and integrated network communication.
The module uses a single Series 90-30 rack slot and provides two auto-sensing RJ-45 Ethernet ports. Depending on the firmware and system configuration, supported Ethernet functions include SRTP, Ethernet Global Data (EGD), and Modbus/TCP.
For the specific -GV revision, published revision history identifies CPU firmware 12.22 and Ethernet firmware 4.52.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | GE |
| Model | IC693CPU374-GV |
| Series | Series 90-30 |
| Product Type | High Performance PLC CPU Module |
| CPU Type | Single-slot CPU with embedded Ethernet |
| Processor Speed | 133 MHz |
| Processor Type | Embedded processor / AMD SC520 family |
| User Memory | 240 KB |
| Memory Storage | RAM + Flash |
| Boolean Execution | Approx. 0.15 ms per 1K Boolean logic |
| Discrete Inputs | 2,048 points |
| Discrete Outputs | 2,048 points |
| Internal Coils | 4,096 bits |
| Temporary Coils | 256 bits |
| Register Memory | 128–32,640 words configurable |
| Analog Input Memory | 128–32,640 words configurable |
| Analog Output Memory | 128–32,640 words configurable |
| Ethernet | Built-in 10/100 Base-T/TX switch |
| Ethernet Ports | 2 × RJ-45 |
| IP Addresses | 1 |
| Ethernet Protocols | SRTP, EGD; later PLUS firmware supports Modbus/TCP |
| Serial Port | No built-in CPU serial port; RS-485 available through compatible power supply |
| Operating Temperature | 0 to 60°C |
| Storage Temperature | -40 to +85°C |
| Rack Position | Single slot |
| Power Requirement | Approx. 7.4 W from 5 VDC backplane |
| Firmware Revision (-GV) | CPU 12.22 / Ethernet 4.52 |
The core CPU374 specifications are documented in GE Series 90-30 technical references. Firmware revision information for the -GV version is independently listed in the CPU374 PLUS revision history.
🔧 Key Features
- Series 90-30 high-performance CPU
- 133 MHz processor
- 240 KB user memory
- RAM and Flash memory architecture
- Integrated 10/100 Mbps Ethernet switch
- Two auto-sensing RJ-45 Ethernet ports
- Single IP address for the embedded Ethernet interface
- SRTP and Ethernet Global Data support
- Modbus/TCP support on CPU374 PLUS firmware versions
- Hardware floating-point calculation
- Battery-backed clock support through the PLC power supply
- Supports up to 8 Series 90-30 baseplates in a system
- Single-slot CPU design
- Suitable for existing Series 90-30 control systems
🌐 Ethernet Communication
One of the main advantages of the CPU374 is its integrated Ethernet interface. The module provides two 10/100 Base-T/TX RJ-45 ports with auto-sensing capability and an embedded Ethernet switch, allowing Ethernet nodes to be daisy-chained without requiring a separate external switch in every configuration.
For CPU374 PLUS versions, communication functions include SRTP and Ethernet Global Data. Later firmware also supports Modbus/TCP client/server functionality. The exact communication features available depend on the CPU firmware revision and programming software being used.
🧠 Memory & Processing
The CPU374 provides 240 KB (245,760 bytes) of total user memory. The actual amount available for the user program depends on how configurable memory areas such as %R, %AI and %AQ are allocated.
The processor operates at 133 MHz, with a published typical execution rate of approximately 0.15 ms per 1K of Boolean logic. This places the CPU374 in the higher-performance range of the Series 90-30 CPU family.
🏭 Typical Applications
The IC693CPU374-GV can be used as the main controller in Series 90-30 PLC systems requiring integrated Ethernet communication.
Typical applications include:
- Factory automation
- Machine control
- Packaging machinery
- Material handling
- Production-line control
- Process monitoring
- PLC-to-HMI communication
- PLC-to-SCADA communication
- Ethernet-connected control systems
- Series 90-30 system upgrades and maintenance
It is particularly useful when an existing Series 90-30 installation requires a CPU with integrated Ethernet rather than a separate communication module.
🛠️ Installation & Configuration Notes
Before replacing an existing Series 90-30 CPU, verify the complete catalog number and revision. The IC693CPU374-GV suffix is significant because CPU374 revisions can have different firmware versions and feature sets.
Recommended checks include:
- Confirm the complete CPU catalog number.
- Check the CPU and Ethernet firmware versions.
- Verify the available user-memory requirements.
- Confirm the Ethernet network architecture.
- Check the required SRTP, EGD or Modbus/TCP functions.
- Verify compatibility with the programming software version.
- Confirm the Series 90-30 power supply can provide the required backplane power.
- Back up the existing PLC program and configuration before replacement.
The CPU374 does not support the Series 90-30 Hand Held Programmer, and its serial communication capability is provided through the compatible power supply rather than a built-in CPU serial port.
❓ Frequently Asked Questions
Q: What PLC family does the IC693CPU374-GV belong to?
A: It belongs to the GE Fanuc Series 90-30 PLC family.
Q: How much user memory does it have?
A: The CPU374 provides 240 KB (245,760 bytes) of total user memory.
Q: Does it have built-in Ethernet?
A: Yes. It has an integrated 10/100 Base-T/TX Ethernet switch with two RJ-45 ports.
Q: How many Ethernet ports are available?
A: Two RJ-45 Ethernet ports are provided.
Q: Does the -GV version support Modbus/TCP?
A: CPU374 PLUS firmware supports Modbus/TCP client/server functions. The exact feature availability should be checked against the installed firmware revision.
Q: Is this CPU a direct replacement for every IC693CPU374 version?
A: Not necessarily. Although the CPU374 family shares the same basic hardware platform, firmware revision, software compatibility and application requirements should be checked before replacement.
Q: Does the CPU include a serial port?
A: The CPU374 does not have a built-in serial port. Series 90-30 documentation specifies RS-485 communication through the compatible power supply.
📦 Identification & Ordering Information
When purchasing this module, verify the complete catalog number on the front label:
GE IC693CPU374-GV
Useful identification details include:
- Series: 90-30
- CPU type: CPU374 PLUS
- User memory: 240 KB
- Ethernet: Integrated 10/100 Mbps
- Ethernet ports: 2 × RJ-45
- CPU firmware revision for -GV: 12.22
- Ethernet firmware revision for -GV: 4.52
For used or surplus inventory, the front-panel indicators, Ethernet connectors, backplane connector, key switch and label should be inspected before installation.
🔗 Related GE Series 90-30 CPU Models
Related CPU models include:
- IC693CPU360
- IC693CPU364
- IC693CPU365
- IC693CPU366
- IC693CPU367
- IC693CPU370
- IC693CPU372
- IC693CPU374
- IC693CPU374 PLUS
- IC693CPU374-JY
- IC693CPU374-KZ
These models belong to the broader Series 90-30 CPU family, but they are not automatically direct replacements. Memory capacity, Ethernet functions, firmware, processing capability and system configuration should be compared before substitution.
