The Siemens 6ES7288-1ST32-0AA0 is a SIMATIC S7-200 SMART CPU ST32 with 16 digital inputs and 16 digital transistor outputs on board. It is the DC/DC/DC version: 24 V DC supply, 24 V DC inputs and 24 V DC transistor outputs, which switch far faster than relays and do not wear out, which is what you want for high cycle rates, stepper and servo pulse trains and PWM control.
This is the newer S7-200 SMART G2 generation, with 80 KB of combined program and data memory, a built-in web server and extended motion functions including CAM profiles and electronic gearing. It keeps the same compact footprint and the same STEP 7-Micro/WIN SMART engineering, so existing machine programs move across easily.
The S7-200 SMART is the controller Siemens built for small and medium machines: packaging lines, bottling and filling machines, textile and plastics machinery, water treatment skids, elevators and simple process skids. It is programmed with the free STEP 7-Micro/WIN SMART software over a standard Ethernet cable, and it pairs with the SIMATIC SMART LINE touch panels for a complete low-cost control package. Because the platform is installed in very large numbers across the Middle East, a spare CPU is the part a maintenance team needs most often when a controller fails.
Technical data
| Siemens order number | 6ES7288-1ST32-0AA0 |
|---|---|
| Product family | SIMATIC S7-200 SMART G2 |
| CPU type | CPU ST32 |
| Version | S7-200 SMART G2 |
| Supply voltage | 20.4 to 28.8 V DC |
| Digital inputs | 16 x 24 V DC sinking/sourcing |
| Digital outputs | 16 transistor outputs (sourcing), 24 V DC, 0.5 A per point |
| Memory | 80 KB combined program and data memory |
| Expansion | Up to 6 expansion modules (EM) and 1 signal board (SB) |
| Communication interfaces | 1 x Ethernet (RJ45), 1 x RS485 |
| High-speed counters | 4 high-speed counters, up to 200 kHz single phase / 100 kHz A-B phase |
| Pulse outputs | High-speed pulse outputs for positioning, plus CAM and electronic gearing |
| Programming software | STEP 7-Micro/WIN SMART |
| Dimensions (W x H x D) | 110 x 100 x 81 mm |
| الوزن | approx. 300 g |
| Operating temperature | -20 to +55 C (horizontal mounting) |
| Mounting | 35 mm DIN rail or panel mounting |
| Condition | New, original Siemens |
Typical applications
- Packaging, filling and bottling machines
- Plastics, textile and woodworking machinery
- Water treatment and pumping skids
- Conveyor and material handling control
- Elevator and hoist control
- Retrofit or replacement of a failed S7-200 SMART controller
Frequently asked questions
Is this the same as CPU ST32 with an order number ending -0AA0?
No. 6ES7288-1ST32-0AA0 is the G2 hardware. Order numbers ending -0AA0 are the earlier first-generation units. Programs transfer upward, but always quote the exact order number printed on the module you are replacing so we ship the matching version.
Can I connect an HMI panel to this CPU?
Yes. The Ethernet port connects directly to a SIMATIC SMART LINE panel, and the RS485 port can also carry a serial HMI or Modbus RTU.
How many expansion modules can I add?
Up to six EM expansion modules on the right-hand side, plus one SB signal board that clips into the front of the CPU.
What software do I need to program it?
STEP 7-Micro/WIN SMART, which Siemens provides free of charge. You connect over a standard Ethernet patch cable; no special programming adapter is needed.
Do you supply this part to my country?
Yes. RendatSP ships genuine Siemens parts worldwide and has local agents in eleven countries across the Middle East and North Africa. Send the order number and quantity and we will quote delivered price and lead time.
Related SIMATIC parts
- 6ES7288-2DE08-0AA0 – EM DE08 8 digital inputs
- 6ES7288-3AE04-0AA0 – EM AE04 4 analog inputs
- 6ES7288-5CM01-0AA0 – SB CM01 RS232/RS485 signal board
- 6AV6648-0EC11-3AX0 – SIMATIC HMI Smart 700 IE V5 panel
RendatSP supplies new original Siemens automation parts to factories across Iraq, Saudi Arabia, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan, with worldwide shipping from Yiwu, China. Send us the order number and quantity and you will have a quotation the same working day.
