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Siemens 6ES7511-1CK00-0AB0 — PLCs (Programmable Logic Controllers)

Siemens 6ES7511-1CK00-0AB0 S7-1500 CPU, PROFINET IRT

MPN6ES7511-1CK00-0AB0

Siemens S7-1500 CPU 6ES7511-1CK00-0AB0, PROFINET IRT, MRP, MODBUS TCP, 32 KB I/O, width 85 mm.

$2,555.24 – $2,703.00Ref. price · indicative, final on quote
Siemens 6ES7511-1CK00-0AB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6ES7511-1CK00-0AB0 — Processor & Memory
ParameterValue
Execution time, bit operations (typ.)60 ns
Execution time, word operations (typ.)72 ns
Execution time, floating-point arithmetic (typ.)384 ns
Size, max.16 kbyte
6ES7511-1CK00-0AB0 — I/O
ParameterValue
Input data area32 kbyte; All inputs are in the process image
Output data area32 kbyte; All outputs are in the process image
6ES7511-1CK00-0AB0 — Programming
ParameterValue
Programming language: FBDYes
Programming language: LADYes
Programming language: SCLYes
6ES7511-1CK00-0AB0 — Electrical
ParameterValue
Rated value (DC)24 V
Current consumption (rated)0.8 A; Digital onboard I/O modules are supplied separately
Permissible range, lower limit (DC)19.2 V; 20.4 V DC, for supplying the digital inputs/outputs
Permissible range, upper limit (DC)28.8 V
Power loss (typ.)11.8 W
Short-circuit protectionYes; electronic/thermal
6ES7511-1CK00-0AB0 — Environmental
ParameterValue
Installation altitude, max.5 000 m; Restrictions for installation altitudes > 2 000 m, see manual
Temperature, min.-40 °C
Temperature, max.70 °C
Operating temperature, min. (horizontal mounting)0 °C
Operating temperature, max. (horizontal mounting)60 °C; note derating data for onboard I/O in the manual. Display: 50 °C, at an operating temperature of typically 50 °C, the display is switched off
6ES7511-1CK00-0AB0 — Mechanical
ParameterValue
Width85 mm
Height147 mm
Depth129 mm
Weight (approx.)1 050 g

Product details

PROFINET IRT CPU with Redundancy

The Siemens 6ES7511-1CK00-0AB0 is an S7-1500 CPU with PROFINET IRT and MRP (Media Redundancy Protocol) as per IEC 62439-2 Edition 2.0. It also supports MODBUS TCP for integration with non-Siemens controllers. The process image handles 32 kbyte of inputs and 32 kbyte of outputs, covering most medium-scale stations. Network discovery is enabled via DCP, DNS, and LLDP, and the CPU serves standard and user pages over HTTP and HTTPS.

Mounts on a standard S7-1500 DIN rail. Width 85 mm leaves room for adjacent modules. Power is drawn from the backplane; no separate 24 V supply required beyond the system power module. Supports up to four communication modules (CM/CP) for PROFIBUS, PROFINET, or Ethernet. The onboard PROFINET interface runs at 100 Mbps and supports IRT for isochronous applications. The integrated I&M data (I&M0 to I&M3) aids asset tracking and compliance documentation. Forcing and capture functions are available for commissioning.

Frequently asked questions

When sourcing 6ES7511-1CK00-0AB0, what's the closest functional second-source?

The 6ES7511-1CK01-0AB0 is the direct successor revision; same form factor and network capabilities, but firmware differences may require a project migration.

What is 6ES7511-1CK00-0AB0's listed DCP?

Yes; DCP (Discovery and Configuration Protocol) is supported for PROFINET device identification.

What is 6ES7511-1CK00-0AB0's listed DNS?

Yes; DNS (Domain Name System) is supported for network name resolution.

Will 6ES7511-1CK00-0AB0 drop into a panel specified around 6ES7511-1CK01-0AB0 without rewiring?

Yes; mechanical dimensions (85 x 147 x 129 mm) are identical, and the backplane bus is the same. However, the firmware revision differs, so the project file may need to be migrated.

What is the I2t rating of 6ES7511-1CK00-0AB0?

0.34 A²·s, indicating the internal power dissipation capacity for inrush current handling.

MPN
6ES7511-1CK00-0AB0