Emerson IC693CPU374-KZ Series 90-30 Ethernet CPU
The KZ hardware release of the Series 90-30 CPU374 PLUS with embedded Ethernet communications and legacy rack control.
Overview
IC693CPU374-KZ is a Series 90-30 CPU374 PLUS hardware release with an embedded Ethernet interface. Manufacturer documentation covers Ethernet Global Data, SRTP, Modbus/TCP server functions and Station Manager diagnostics for the CPU374 PLUS platform.
The KZ suffix must be kept with the quotation because the CPU and Ethernet firmware release are part of compatibility. A successful replacement depends on the stored hardware configuration, logic, Ethernet addressing and produced/consumed data definitions.
Specs
| Manufacturer | Emerson / GE Fanuc |
|---|---|
| Model | IC693CPU374-KZ |
| Product Family | Series 90-30 |
| Controller Type | CPU374 PLUS with embedded Ethernet |
| Hardware Release | KZ |
| Documented CPU Firmware | 12.71 for the KZ release |
| Documented Ethernet Firmware | 6.20 for the KZ release |
| Ethernet Services | SRTP, Ethernet Global Data and Modbus/TCP server functions are documented for the PLUS CPU platform |
| Diagnostic Interface | Ethernet Station Manager |
| Programming Environment | Series 90-30 project must be retained in the compatible engineering software |
| Migration Direction | Emerson documents current RX3i CPUs as migration replacements for Series 90-30 CPU374 applications, subject to system review |
Features
- Combines Series 90-30 logic execution with embedded Ethernet communications.
- Provides Station Manager commands for network diagnostics and Ethernet-task information.
- Supports EGD exchanges used in many legacy distributed-control applications.
- Retains the KZ hardware/firmware identity for controlled spare matching.
Applications
- Replacement CPU for an installed Series 90-30 CPU374 PLUS rack.
- Legacy Ethernet Global Data and SRTP controller nodes.
- Migration planning from Series 90-30 to a supported PACSystems RX3i platform.
Lifecycle
- Upload and verify logic, hardware configuration, registers and Ethernet data before shutdown.
- Archive IP settings, EGD exchanges, SRTP channels and HMI/SCADA connection details.
- Review rack power, battery retention and compatible Series 90-30 modules before CPU exchange.
- For migration, test scan-time behavior, communications timing and every external dependency on the old CPU.
FAQ
Which backup is required before sourcing IC693CPU374-KZ?
Provide the complete controller project, hardware configuration, logic, reference memory data, IP settings, EGD definitions and current firmware record.
Why must the KZ suffix on IC693CPU374-KZ remain visible?
It identifies a defined hardware release and documented CPU/Ethernet firmware pairing; nearby suffixes should not be treated as identical without compatibility review.
What should be checked if a replacement IC693CPU374-KZ runs logic but loses plant communications?
Compare IP parameters, SRTP channels, EGD producer/consumer IDs, exchange timing, switch ports and HMI/SCADA connection records.
Can a current RX3i CPU replace IC693CPU374-KZ as a drop-in swap?
No blanket drop-in claim should be made. I/O support, rack architecture, Ethernet services, application instructions and timing all require a migration plan.
What acceptance evidence should follow an IC693CPU374-KZ exchange?
Record a clean download, PLC fault-table review, network diagnostics, EGD status, HMI/SCADA communications and controlled machine-function tests.
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