Product Overview

The 6ES5465-7LA11​ is an analog input carrier module from the Siemens SIMATIC S5 465 subseries, purpose-built for the S5-115U and S5-115U/F central-processor racks (the “-7” prefix designates 115U/F compatibility, distinguishing it from the “-3” prefix 465 variants that target S5-135U/155U). Architecturally, the 6ES5465-7LA11​ is a non-floating (potentiell-gebunden / potential-bonded) 16-channel analog input multiplexer plus dual-slope integrating ADC, delivering 12-bit + sign resolution (13-bit two’s complement) per channel. The defining quirk—and the thing that trips up first-time buyers—is that the 6ES5465-7LA11​ contains no onboard measurement-range circuitry: the module body is a passive-ish carrier that requires 2 or 4 pluggable 6ES5498-x “measuring range submodule” cards to be inserted into its front-card cage. Those submodules key the input range: ±12.5/±50/±500 mV, ±1 V, ±5 V, ±10 V, ±20 mA, 4–20 mA, and PT100 are all supported, but only if the matching 6ES5498 card is physically seated. In PT100 mode, each 3-wire RTD consumes two input channels, so the 16-channel carrier yields 8 PT100 sensors; in voltage/current mode, all 16 channels are independent.The 6ES5465-7LA11​ occupies one standard I/O slot in a S5-115U/F central rack and draws from the rack’s 24 V L+ supply (logic + range-submodule power) and 5 V backplane (bus interface). Conversion uses dual-slope integrating ADC with an adjustable integration window; the default is 20 ms at 50 Hz (16.6 ms at 60 Hz), giving excellent 50/60 Hz mains-noise rejection—perfect for process-grade signals but slow: ~0.48 s to scan 8 channels, ~0.96 s for 16 channels at 50 Hz. Siemens has placed the entire S5 465 family (alongside the 6ES5498 range submodules) into PM490 / end-of-life status with no designated S7 replacement, making the 6ES5465-7LA11​ a pure MRO and spare-stocking line item for plants that have chosen to run S5-115U/F process racks to natural end-of-life rather than migrate to S7-300/400 or S7-1500 + ET 200SP/MP.

Technical Specifications

Main Features and Advantages

16-channel density in a single S5-115U/F slot—but only with the right 6ES5498 submodules.​ The 6ES5465-7LA11​ is fundamentally a carrier: the module front cage accepts 2 range submodules for 8-channel mode or 4 submodules for 16-channel mode (each 6ES5498 card serves 4 input channels). This architecture made sense in the S5 era because one carrier SKU could serve voltage, current, and RTD applications purely by swapping inexpensive submodules—no need for different AI module SKUs per signal type. For MRO buyers today, the trap is buying a naked 6ES5465-7LA11​ without matching 6ES5498 cards: it will not pass a PLC diagnostic until the submodules are seated and the range codes match the STEP 5 HW config. Common submodule mates: 6ES5498-1AA11 (±12.5/±50/±500 mV + PT100), 6ES5498-1AA41 (±20 mA), 6ES5498-1AA71 (4–20 mA). Stocking a 6ES5465-7LA11​ therefore means stocking its submodule set in parallel.Dual-slope integrating ADC = excellent mains-noise rejection.​ Unlike successive-approximation ADCs that can alias 50/60 Hz hum into the reading, the 6ES5465-7LA11​ integrates each channel over a full mains half-cycle (default 20 ms @ 50 Hz). In process plants where 4–20 mA loops run next to contactor panels and variable-frequency drives, this integration rejects the coupled hum that would otherwise make a fast-ADC reading jitter. The trade-off is scan speed: ~0.96 s for all 16 channels. That’s fine for pressure/flow/level/temp in batch and water-treatment (where the process time constant is seconds to minutes) but unacceptable for high-speed machine-axis or web-line scanning—those applications should use S5 331/341 FAST AI or migrate to S7.