EN
Siemens SIMATIC S5 CPU 948 Central Processing Unit 6ES5948-3UA23
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
- Product Overview
- Key Functions
- Official Specifications
- Frequently Asked Questions
- Compatibility & Ordering Notes
- Hot Selling Models
- Recommended Products
Overview
Siemens • SIMATIC S5-155U
6ES5948-3UA23 SIMATIC S5 CPU 948 Central Processing Unit
This CPU 948 is a central processing module for legacy SIMATIC S5-155U automation systems and must be matched to the installed rack, memory and STEP 5 program.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6ES5948-3UA23 |
| Product Type | Central processing unit for the SIMATIC S5-155U automation system |
| Core Function | Executes the stored S5 control program and coordinates rack I/O and communication |
| Application or Compatible Series | Legacy SIMATIC S5-155U installations engineered for the CPU 948 hardware version |
Exact Identification
Match 6ES5948-3UA23 character by character and confirm the complete SIMATIC S5 CPU 948 Central Processing Unit designation.
Interface Arrangement
Confirm the installed supply, ports, field connections and required accessories before wiring the replacement.
Configuration Check
Preserve the approved engineering project, network parameters and application data used by the installed system.
Product Overview
This CPU 948 is a central processing module for legacy SIMATIC S5-155U automation systems and must be matched to the installed rack, memory and STEP 5 program.
The processor executes the configured STEP 5 control program. The unit operates in the approved S5-155U central rack arrangement. Memory, interfaces and project backup must be preserved during exchange.
Key Functions
S5 Program Execution
The processor executes the configured STEP 5 control program.
Rack Integration
The unit operates in the approved S5-155U central rack arrangement.
Controlled Replacement
Memory, interfaces and project backup must be preserved during exchange.
Official Specifications
| Degree of Protection | IP00 |
|---|---|
| Supply Voltages | 5 V ±5%; 24 V +25% / −17% |
| Current Consumption at 5 V | 1.5 A typical |
| Backup Voltage | 3.4 V |
| Backup Current | 20 µA typical at 25 °C |
| Available Flags | 2,048 |
| Available S Flags | 32,768 |
| Available Timers and Counters | 256 timers and 256 counters |
| Program Block Capacity | 256 PB, 256 SB, 256 FB and 256 FX blocks |
| Data Block Capacity | 256 DB and 256 DX blocks; 253 of each are freely available |
| Integrated Serial Interface | PG interface |
| Optional Serial Interface | V.24, TTY, RS422A/485, SINEC L1 or PG interface via plug-in submodule |
| Serial PG Transmission Rate | 9,600 bit/s |
| Backplane Bus | S5 bus |
| Dimensions | 20.32 × 233.4 × 160 mm |
| Approximate Weight | 0.6 kg |
| North American Approvals | UL 508 and CSA C22.2 No. 142 |
Frequently Asked Questions
Which engineering project is required for CPU 948 6ES5948-3UA23?
Use the validated STEP 5 project and the memory configuration from the installed controller.
Where is the processor intended to operate CPU 948 6ES5948-3UA23?
Install it only in the compatible SIMATIC S5-155U rack configuration.
Which installed configuration should be recorded before replacing CPU 948 6ES5948-3UA23?
Record the configured addresses, wiring assignments, parameters, firmware and neighboring hardware before removal.
What identification must match when selecting CPU 948 6ES5948-3UA23?
Match the complete article number, hardware revision and every option used by the installed system.
How should technicians handle CPU 948 6ES5948-3UA23?
Isolate the affected equipment and use grounded electrostatic-discharge precautions throughout the exchange.
Which checks are required after installing CPU 948 6ES5948-3UA23?
Verify power, diagnostics, communication, field signals and the complete approved machine or plant function.
When should a visually similar unit replace CPU 948 6ES5948-3UA23?
Use a visually similar unit only after engineering confirms identical electrical, mechanical and software compatibility.
Compatibility & Ordering Notes
Compatibility Checklist
- Use only with the compatible S5-155U rack and power supply.
- Preserve the complete STEP 5 project and memory contents.
- Verify all I/O and communication paths after startup.
