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Siemens 6ES7315-2AH14-0AB0 — PLCs (Programmable Logic Controllers)

6ES7315-2AH14-0AB0 Siemens CPU315-2 DP, FM 8

MPN6ES7315-2AH14-0AB0
End of Life

Siemens S7-300 CPU 315-2 DP, order code 6ES7315-2AH14-0AB0, FM 8, CFC, FBD, LAD, SCL, STL, GRAPH, 244-byte I/O, PROFIBUS RS-485.

$895.00 – $1,200.00Ref. price · indicative, final on quote
Siemens 6ES7315-2AH14-0AB0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6ES7315-2AH14-0AB0 — I/O
ParameterValue
Digital inputs0
Digital outputs0
ExpandableNo
Input data area244 byte
Output data area244 byte
6ES7315-2AH14-0AB0 — Processor & Memory
ParameterValue
Execution time, bit operations (typ.)0.05 µs
Execution time, word operations (typ.)0.09 µs
Execution time, floating-point arithmetic (typ.)0.45 µs
Size, max.2 048 byte
6ES7315-2AH14-0AB0 — Programming
ParameterValue
Programming language: FBDYes
Programming language: LADYes
Programming language: SCLYes
6ES7315-2AH14-0AB0 — Electrical
ParameterValue
Rated value (DC)24 V
Current consumption (rated)850 mA
Permissible range, lower limit (DC)19.2 V
Permissible range, upper limit (DC)28.8 V
Power loss (typ.)4.5 W
6ES7315-2AH14-0AB0 — Environmental
ParameterValue
Temperature, min.0 °C
Temperature, max.60 °C
6ES7315-2AH14-0AB0 — Mechanical
ParameterValue
Width40 mm
Height125 mm
Depth130 mm
Weight (approx.)290 g
6ES7315-2AH14-0AB0 — Communication
ParameterValue
Interface typeIntegrated RS 485 interface

Product details

CPU 315-2 DP with FM 8 and full IEC programming

The 6ES7315-2AH14-0AB0 is an S7-300 CPU with FM rating of 8. It supports CFC, FBD, LAD, SCL, STL, HiGraph, and GRAPH. The backplane I²t is rated at 1 A²·s. Input and output addressing each reach 244 bytes, with a maximum of 16 modules overall. The CPU communicates via PROFIBUS DP over an isolated RS-485 interface. Physical dimensions are 40 mm wide, 125 mm high, 130 mm deep. It requires STEP 7 V5.2 SP1 or higher with a hardware update. The unit supports forcing, retentive data (must be restarted at each restart), and routing only with an active interface. Up to 4 CPs, 10 CP LAN connections, and 8 PtP CPs can be configured.

The closest sibling in the same S7-300 footprint is the 6ES7315-2EH13-0AB0, which adds a PROFINET interface and enables MPI. This CPU (2AH14) lacks MPI and uses only PROFIBUS DP.

Frequently asked questions

Will the 6ES7315-2AH14-0AB0 drop into a panel that was specified around the 6ES7315-2EH13-0AB0 without rewiring?

No. The 2EH13 has PROFINET and MPI; the 2AH14 has only PROFIBUS DP and no MPI. The physical footprint matches, but the network connection requires rewiring and the hardware configuration must be updated. The backplane and power draw are compatible, but the communication driver differs.

MPN
6ES7315-2AH14-0AB0