CPU 948 for S5-155U Programmable Controllers
Siemens 6ES5948-3UA23 is a SIMATIC S5 CPU 948 central processing unit designed for the S5-155U programmable controller. Siemens documentation identifies a 1664 KB RAM configuration and shows the CPU 948 front panel with a 15-pin PG interface, SI1 and SI2 interfaces, operating LEDs and RUN/STOP controls. This legacy controller component must be matched to the installed S5 rack, power supply, memory submodule, interface hardware and application program. Before replacement, verify the complete suffix, hardware revision, memory configuration, connector arrangement, existing software backup and restart procedure. A current order-code-specific Siemens PLM status was not confirmed in the reviewed official sources.
| Item | Stockoems Information |
|---|---|
| Product Condition | Original new |
| Availability | In stock |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping options available |
Condition, availability and warranty are Stockoems commercial information, not manufacturer commitments.
| Parameter | Verified Value |
|---|---|
| Manufacturer | Siemens |
| Complete Part Number | 6ES5948-3UA23 |
| Product Type | CPU 948 central processing unit |
| Controller System | SIMATIC S5-155U |
| RAM Configuration | 1664 KB |
| Programming Interface | 15-pin PG interface |
| System Interfaces | SI1 and SI2 |
| Front Controls | RUN/STOP mode switch and reset controls |
| Status Indication | RUN, STOP, system fault and interface LEDs |
| Review Area | Application Guidance |
|---|---|
| System Fit | SIMATIC S5-155U installations documented for CPU 948 hardware. |
| Functional Role | Central processing and execution of the installed S5 control program. |
| Typical Applications | Maintenance and controlled replacement in established S5-155U systems. |
| Replacement Use | Replacement only after rack, memory, interfaces and program backup are verified. |
A current order-code-specific Siemens PLM status was not confirmed in the reviewed official sources. No present lifecycle label is assigned on this page. Verify the current Siemens product record before long-term support or migration planning.
It identifies a Siemens SIMATIC S5 CPU 948 for the S5-155U controller platform.
The official Siemens product description identifies a 1664 KB RAM configuration.
The CPU front panel includes a 15-pin PG interface and SI1 and SI2 interfaces.
No current order-code-specific Siemens PLM wording was confirmed, so no status is assigned here.
Archive the S5 application program, parameters and relevant machine startup information.
Yes. Request nameplate, front-panel, connector and packaging images before shipment.
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