The Siemens 6ES7288-1CR40-0AA1 is a SIMATIC S7-200 SMART CPU CR40s with 24 digital inputs and 16 digital relay outputs on board. It is the AC/DC/Relay version: the CPU is powered from the 85-264 V AC line, the inputs are 24 V DC and the outputs are dry relay contacts rated 2 A, so it drives contactors, solenoid valves, lamps and small motors directly without interposing relays.
The CR series is the economic member of the family: a compact, non-expandable CPU with an RS485 port and no Ethernet interface, intended for simple standalone machines where the program is loaded once and the controller then runs on its own. If the machine needs an Ethernet HMI or extra I/O later, choose an SR or ST CPU instead.
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 | 6ES7288-1CR40-0AA1 |
|---|---|
| Product family | SIMATIC S7-200 SMART |
| CPU type | CPU CR40s |
| Version | Economic compact CPU |
| Supply voltage | 85 to 264 V AC, 47 to 63 Hz |
| Digital inputs | 24 x 24 V DC sinking/sourcing |
| Digital outputs | 16 relay outputs, 2 A per point (5 to 30 V DC / 5 to 250 V AC) |
| Memory | 20 KB combined program and data memory |
| Expansion | Not expandable |
| Communication interfaces | 1 x RS485 (no Ethernet port on this economic CPU) |
| High-speed counters | 4 high-speed counters, 100 kHz single phase / 50 kHz A-B phase |
| Pulse outputs | Not available on relay outputs – choose an ST (transistor) CPU for pulse train or PWM output |
| Programming software | STEP 7-Micro/WIN SMART |
| Dimensions (W x H x D) | 125 x 100 x 81 mm |
| الوزن | approx. 475 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 CR40 with an order number ending -0AA0?
No. 6ES7288-1CR40-0AA1 is the current economic 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?
Only over RS485, because this economic CPU has no Ethernet port. For an Ethernet HMI connection choose an SR or ST CPU, which have an integrated Ethernet interface.
How many expansion modules can I add?
None. The CR series is a compact, non-expandable CPU. If you need extra digital or analog points, use an SR or ST CPU.
What software do I need to program it?
STEP 7-Micro/WIN SMART, which Siemens provides free of charge. The CR series is programmed over its RS485 port with a PC/PPI cable.
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.
