The Siemens 6ES7288-5DT04-0AA0 is an SB DT04 signal board adding two 24 V DC inputs and two 24 V DC transistor outputs to an S7-200 SMART CPU.
When a machine is two points short – one more limit switch and one more valve – this board solves it for a fraction of the cost of an expansion module, and without widening the controller at all. The transistor outputs are also fast enough to be used as an additional pulse output for a stepper drive.
A signal board plugs into the recess in the front face of the CPU, so it adds function without adding a single millimetre to the width of the controller. Every expandable S7-200 SMART CPU takes exactly one signal board, and it can be fitted alongside the six EM expansion modules.
Technical data
| Siemens order number | 6ES7288-5DT04-0AA0 |
|---|---|
| Product family | SIMATIC S7-200 SMART |
| Module type | SB DT04 |
| Function | 2 digital inputs / 2 transistor outputs signal board |
| Digital inputs | 2 x 24 V DC |
| Digital outputs | 2 x 24 V DC transistor |
| Output current | 0.5 A per point |
| Connection | Removable screw terminal block |
| Mounting | Clips into the recess in the front of the CPU – uses no extra rail width |
| Compatible CPUs | S7-200 SMART SR, ST and G2 CPUs (not the non-expandable CR series) |
| Weight | approx. 18 g |
| Operating temperature | -20 to +55 C (horizontal mounting) |
| Condition | New, original Siemens |
Typical applications
- Adding a couple of sensor or actuator points
- Extra pulse output for a stepper drive
- Machine modifications after commissioning
- Keeping the six EM slots free for larger modules
- Compact panels with no spare rail width
Frequently asked questions
Which CPUs accept this signal board?
All expandable S7-200 SMART CPUs – SR20, ST20, SR30, ST30, SR40, ST40, SR60, ST60, the V3.0 versions and the G2 range. One signal board per CPU. The economic CR-series CPUs do not have a signal board slot.
Does it take up an expansion slot?
No. The signal board sits inside the CPU front cover, so all six EM expansion slots stay free.
Is it a genuine Siemens part?
Yes. RendatSP supplies new original Siemens parts only, with the Siemens order number and packaging.
Can you ship to my country?
Yes. RendatSP ships worldwide from Yiwu, China, with local agents in eleven countries across the Middle East and North Africa.
How quickly can I get a quotation?
The same working day. Send the order number and quantity and we will confirm delivered price and lead time.
Related SIMATIC parts
- 6ES7288-1ST40-0AA1 – CPU ST40 DC/DC/DC
- 6ES7288-1SR40-0AA1 – CPU SR40 AC/DC/Relay
- 6ES7288-3AE04-0AA0 – EM AE04 4 analog inputs
- 6ES7288-2DE08-0AA0 – EM DE08 8 digital inputs
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.





