SIEMENS6ES7-315-2AH14-0AB0PLC Central Processing Unit 256 KB Work Memory MPI and PROFIBUS DP Master/Slave 24 V DC

Product Description

What this part is

Siemens 6ES7315-2AH14-0AB0 central processing unit, Simatic S7-300 CPU 315-2 DP. Manufacturer: Siemens. Part Number: 6ES7315-2AH14-0AB0. Product Type: PLC central processing unit. Controller Platform: Simatic S7-300. Work Memory: 256 KB. Interfaces: MPI, and a second interface running as PROFIBUS DP master or DP slave. Communication Standard: MPI and PROFIBUS DP. Supply Voltage: 24 V DC, permissible range 19.2 to 28.8 V DC. Power Loss: 4.5 W. Bit Processing Time: 0.05 µs. Word Processing Time: 0.09 µs. Program Storage: Simatic Micro Memory Card. Dimensions: 40 x 125 x 130 mm (W x H x D). Item Weight: 0.33 kg (0.73 lb). Protection Rating: IP20. Mounting Type: S7-300 profile rail. Operating Temperature: 0 to 60 °C horizontal mounting, 0 to 40 °C vertical mounting. GTIN: 4025515077763.

Decoding the designation

6ES7 — the Siemens order-number group for Simatic S7 automation hardware.

315 — the CPU 315 performance class in the S7-300 range.

2AH14 — the execution code fixing the 256 KB CPU 315-2 DP with the DP master/slave second interface.

0AB0 — the product-version suffix Siemens uses across the S7 range.

What these specs mean in practice

Work Memory: 256 KB. That is the space the executing program and its data occupy, and it puts this CPU in the mid range of the S7-300 line — enough for a large machine or a small plant section rather than a single skid.

Bit Processing Time: 0.05 µs. Word Processing Time: 0.09 µs. Scan time on a logic-heavy program tracks the bit figure, so a program of tens of thousands of instructions still completes inside a few milliseconds.

Communication Standard: MPI and PROFIBUS DP. The MPI port carries programming and HMI traffic; the second port runs PROFIBUS DP as a master driving distributed I/O such as ET 200 stations, or as a slave under another controller.

Supply Voltage: 24 V DC, 19.2 to 28.8 V DC. The CPU takes the same control supply as the rest of the rack, and the tolerance band covers a sagging panel supply.

Power Loss: 4.5 W. Low enough that a densely populated rack does not need forced cooling on the CPU’s account.

Program Storage: Simatic Micro Memory Card. The user program and its retentive data live on a removable card, so a CPU swap carries the program across in the card rather than needing a reload from a programming device.

Operating Temperature: 0 to 60 °C horizontal. The full 60 °C ceiling applies to a horizontally mounted rack; vertical mounting is rated to 40 °C.

Mounting data

Mounting Type: Simatic S7-300 profile rail, single-width slot in position 2 of the rack. Dimensions: 40 mm wide x 125 mm high x 130 mm deep. Item Weight: 0.33 kg (0.73 lb). Protection Rating: IP20.

Quantity and configuration

Unit Quantity: 1 Pc. The listing is for one CPU.

Interchange guidance

GTIN: 4025515077763. MPN Variants: 6ES7315-2AH14-0AB0, 6ES73152AH140AB0, 6ES7 315-2AH14-0AB0, 6ES7315 2AH14 0AB0, CPU 315-2 DP.

The 6ES7315-2EH14-0AB0 is the CPU 315-2 PN/DP, the same performance class with a PROFINET port in place of the plain DP second interface. Within CPU 315 the 2AH14 code is what fixes this 256 KB DP-only execution.