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Siemens SIMATIC S5 CPU 921 for 130WB 6ES5921-3WB12
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 / SINUMERIK - binary-control central processing unit
6ES5921-3WB12 SIMATIC S5 CPU 921 for 130WB
Siemens identifies this CPU 921 for the 130WB central controller and integrated PLC; the CPU 921 architecture is optimized for binary open-loop control.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6ES5921-3WB12 |
| Product Type | binary-control central processing unit |
| Core Function | Processes binary control programs for the 130WB central controller and integrated PLC |
| Application or Compatible Series | SIMATIC S5 and SINUMERIK 3/8 systems using the 130WB platform |
Product Overview
Siemens identifies this CPU 921 for the 130WB central controller and integrated PLC; the CPU 921 architecture is optimized for binary open-loop control.
Official Siemens documentation identifies the product for SIMATIC S5 and SINUMERIK 3/8 systems using the 130WB platform. Selection and commissioning should follow the documented electrical, interface, memory, environmental and mechanical values shown below.
Key Functions
Binary Signal Processing
The S-processor architecture is intended for open-loop control tasks.
STEP 5 Programming
LAD, CSF and STL representations support established S5 service workflows.
Flexible Program Execution
Programs can be cyclic, interrupt-controlled or time-controlled.
Official Specifications
| Plug-In Program Memory | RAM or EPROM, up to 64 KB |
|---|---|
| Integrated Data Memory | 7.4 KB DB-RAM |
| Memory Flags | 2,048 |
| Timers | 128 |
| Counters | 128 |
| Maximum Binary Inputs | 4,096 |
| Maximum Binary Outputs | 4,096 |
| Maximum Analog Inputs | 192 |
| Maximum Analog Outputs | 192 |
| Programming System | STEP 5 |
| Programming Representations | LAD, CSF and STL |
| Sequential Programming | GRAPH 5 |
| Program Execution | Cyclic, interrupt-controlled and time-controlled |
| Approximate Net Weight | 0.2 kg |
Frequently Asked Questions
What control workload is 6ES5921-3WB12 designed to process?
The CPU 921 S-processor is optimized for binary open-loop control tasks.
Where is 6ES5921-3WB12 used in legacy systems?
It is used with the 130WB central controller and its integrated PLC in SIMATIC S5 or SINUMERIK installations.
Which memory submodules can be fitted to 6ES5921-3WB12?
Plug-in RAM or EPROM program memory is supported up to 64 KB.
How many timers and counters are available on 6ES5921-3WB12?
The CPU architecture provides 128 timers and 128 counters.
Which programming representations support 6ES5921-3WB12?
STEP 5 programs can be created in LAD, CSF or STL, with GRAPH 5 for sequential control.
Can 6ES5921-3WB12 respond to interrupts as well as cyclic logic?
Yes. Cyclic, interrupt-controlled and time-controlled program execution are supported.
What should be backed up before exchanging 6ES5921-3WB12?
Preserve the complete STEP 5 program, data blocks and the installed RAM or EPROM contents before removal.
Compatibility & Ordering Notes
Compatibility Checklist for 6ES5921-3WB12
- Match SIMATIC S5 CPU 921 for 130WB and the full article number character by character.
- Verify integrated data memory: 7.4 KB DB-RAM.
- Confirm maximum binary inputs: 4,096.
- Preserve the approved settings and connection records used in SIMATIC S5 and SINUMERIK 3/8 systems using the 130WB platform.
