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GE Fanuc IC693CPU374 Series 90-30 PLC CPU Module (Embedded Ethernet)
1. Product Overview
The IC693CPU374 is a high-performance single-slot CPU in GE Fanuc's (now Emerson Automation Solutions) Series 90-30 mid-size PLC family. It installs in slot 0 of a 90-30 backplane rack (IC693CHS series) and executes the user ladder program while managing local and expansion/remote I/O.
The CPU uses an AMD 586-class (SC520/SC250) embedded processor at 133MHz, with a typical Boolean scan rate of 0.15ms per 1K contacts and floating-point support. User memory totals 240KB (245,760 bytes) in RAM + Flash, dynamically allocable among registers (%R), analog inputs (%AI) and analog outputs (%AQ), up to 32,640 words each.
The CPU integrates two RJ-45 10/100Base-T/TX Ethernet ports with a built-in switch (Single IP), allowing direct daisy-chaining of devices without an external switch. Ethernet supports SRTP (Simplified Remote Terminal Protocol), Modbus TCP and EGD (Ethernet Global Data) producer/consumer communication. An RS-485 serial port (via the power supply) runs SNP/SNPX for programming and serial devices.
The CPU manages up to 2048 discrete I/O points and 1024 analog words across up to 8 racks (1 CPU base + 7 expansion/remote racks).
2. Specifications
表格
| Item | Specification |
|---|---|
| Manufacturer | GE Fanuc / Emerson Automation Solutions / GE Intelligent Platforms |
| Series | Series 90-30 |
| Catalog number | IC693CPU374 |
| Product type | Single-slot PLC CPU (embedded Ethernet) |
| Processor | AMD 586-class embedded (SC520/SC250) |
| Processor clock | 133 MHz |
| Boolean scan rate | 0.15 ms/1K logic (typical, Boolean contacts) |
| Floating point | Supported |
| User memory | 240 KB (245,760 bytes), RAM + Flash |
| Allocatable memory | %R / %AI / %AQ up to 32,640 words each |
| Discrete I/O capacity | Up to 2048 points |
| Analog I/O capacity | Up to 1024 words |
| Rack support | Up to 8 racks (1 CPU base + 7 expansion/remote) |
| Ethernet ports | 2× RJ-45, 10/100Base-T/TX autosensing, built-in switch (Single IP, daisy-chain) |
| Ethernet protocols | SRTP, Modbus TCP, EGD (Ethernet Global Data) |
| Serial port | 1× RS-485 (via power supply), SNP/SNPX |
| Programming software | Logic Developer / Proficy Machine Edition |
| Mounting | 90-30 backplane rack slot 0 (single slot width) |
| Memory backup | RAM (runtime) + Flash (program/firmware), battery-backed RAM |
| Operating temperature | 0–60 °C (typical) |
| Suffix note | -GU/-JY/-KZ/-GP are hardware revisions, same function |
Per GE Fanuc Series 90-30 CPU374 official data sheet and GFK series documents. Some third-party sources quoting 2MB memory / 400MHz processor are incorrect; official specs are 240KB / 133MHz. The dual Ethernet ports form a built-in switch in Single IP mode and cannot be used as two independent IP addresses.
5. Model Information
- Catalog number (ordering number): IC693CPU374
- Product description: GE Fanuc Series 90-30 single-slot PLC CPU, dual-port 10/100 embedded Ethernet, 240KB user memory.
- Official catalog description: CPU 374 — Single Slot CPU with Embedded Ethernet Interface, 240KB user memory, 133MHz, dual 10/100Base-T/TX Ethernet switch.
- Material number note: IC693CPU374 is the official GE Fanuc / Emerson ordering number. Suffixes (-GU, -JY, -KZ, -GP) are hardware revisions with identical core function. If you have questions on memory configuration, Ethernet IP setup or differences from other 90-30 CPUs (CPU331/332/364), please contact us by email.
- Series features:
- Single-slot design, no extra slot cost
- 133MHz 586-class processor, 0.15ms/1K Boolean scan
- 240KB configurable RAM + Flash, floating-point support
- Dual RJ-45 10/100 Ethernet with built-in switch, daisy-chain saves external switch
- SRTP / Modbus TCP / EGD over Ethernet
- RS-485 serial with SNP/SNPX programming
- Up to 2048 discrete I/O / 1024 analog words
- Compatible with all 90-30 I/O and remote I/O modules
- Related products in series: IC693CPU331 (no Ethernet), IC693CPU332, IC693CPU364 (higher performance); CPU374 is the main Ethernet model
- Matching products: 90-30 backplane racks (IC693CHS series), 90-30 power supplies (IC693PWR series), 90-30 discrete/analog I/O modules, remote I/O modules (e.g. IC693BEM331), programming cable/software (Logic Developer / Machine Edition)
- Official documents: GE Fanuc Series 90-30 CPU374 Data Sheet; Series 90-30 PLC User's Manual
6. Why Choose Us
- Exact model match: We verify supply against your full catalog number IC693CPU374, distinguishing 374 (dual Ethernet) from 331 (no Ethernet) and 364 (higher performance) to avoid wrong shipment.
- Authorized channel supply: GE Fanuc / Emerson 90-30 CPUs supplied through regular channels, with product documentation available on request.
- Selection support: We help confirm I/O capacity, memory allocation, Ethernet/SRTP/EGD configuration and matching with 90-30 racks, power supplies and remote I/O.
- Delivery & after-sales: Quotation, lead-time confirmation and order follow-up provided; for any parameter questions or alternative options, please contact us by email.
7. FAQ
Q1: Which series is the IC693CPU374?
A: It belongs to the GE Fanuc Series 90-30 PLC family, a single-slot CPU installing in slot 0 of a 90-30 backplane rack. It is not a VersaMax (IC200 series) product; the racks and I/O modules are not interchangeable.
Q2: How much memory? Why do some sources say 2MB?
A: The official data sheet specifies 240KB (245,760 bytes) configurable user memory in RAM + Flash. Some third-party sources quoting 2MB or 512KB are incorrect. Actual available program space depends on %R/%AI/%AQ allocation.
Q3: What are the Ethernet ports? How many?
A: Two RJ-45 10/100Base-T/TX autosensing ports with a built-in hardware switch in Single IP mode. They can daisy-chain PLC and HMI without an external switch; the two ports cannot be configured as independent IP addresses.
Q4: Which communication protocols are supported?
A: Ethernet supports SRTP (GE proprietary TCP/IP, port 18245), Modbus TCP (port 502) and EGD Ethernet Global Data; the RS-485 serial port supports SNP/SNPX.
Q5: How much I/O and how many racks?
A: Up to 2048 discrete I/O points and 1024 analog words, across up to 8 racks (1 CPU base + 7 expansion/remote racks).
Q6: Does the program need a battery?
A: The user program resides in Flash and is retained across power cycles; runtime data (e.g. registers) is held by battery-backed RAM. Suffixes -GU/-JY/-KZ/-GP are hardware revisions with the same function. Please email us to confirm.
