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Copy| Product Name | Siemens 6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0 | SIMATIC S7-200 SMART EM AT thermocouple input modules |
| Item NO. | 2926383 |
| Weight | 0.1 kg = 0.2205 lb = 3.5274 oz |
| Category | SIEMENS |
| Brand | SIEMENS |
| Creation Time | 2026-10-23 |
Siemens · SIMATIC S7-200 SMART temperature expansion I/O
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0 · SIMATIC S7-200 SMART EM AT04 / EM AT08 thermocouple input modules
Siemens 6ES7288-3AT04-0AA0 and 6ES7288-3AT08-0AA0 are S7-200 SMART thermocouple expansion modules for multi-point temperature acquisition. The AT04 variant provides four 16-bit thermocouple inputs, while the AT08 variant provides eight inputs in the same temperature-measurement family, so the number of field pairs changes with the selected article.
The exact Siemens 6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0 identifier must remain attached to the panel wiring because channel count, module size and current demand differ. Each thermocouple input is configured for its sensor type and rejection filter; the module applies cold-junction compensation and reports range or open-wire status to the S7-200 SMART CPU.
At the connector, the AT04 wiring uses X10 for 24 V DC and functional earth and X11 for AI 0 through AI 3 thermocouple pairs. The AT08 record extends the same temperature-input family to eight channels, so the project channel map, spare terminals and cabinet space must follow the exact suffix rather than treating the two articles as identical.
| Technical Item | 6ES7288-3AT04-0AA0 | 6ES7288-3AT08-0AA0 |
|---|---|---|
| Brand | Siemens | |
| Product name | SIMATIC S7-200 SMART EM AT04 / EM AT08 thermocouple input modules | |
| Country | China | |
| System family | SIMATIC S7-200 SMART temperature expansion I/O | |
| AT04 module | EM AT04, 4 × 16-bit thermocouple inputs | |
| AT08 module | EM AT08, 8 × 16-bit thermocouple inputs | |
| Sensor type | Thermocouple input; voltage and RTD inputs not selected | |
| Temperature resolution | 0.1 °C / 0.1 °F | |
| Voltage resolution | 15 bits plus sign | |
| Maximum withstand voltage | ±35 V | |
| Noise rejection | 85 dB at selected 10, 50, 60 or 400 Hz filter | |
| Common-mode rejection | >120 dB at 120 V AC | |
| Input impedance | ≥10 MΩ | |
| Isolation | 500 V AC field/logic, field/24 V DC and 24 V DC/logic | |
| Repeatability | ±0.05% FS | |
| Measuring principle | Integrating | |
| Cold-junction error | ±1.5 °C | |
| Maximum sensor cable | 100 m; 100 Ω wire resistance | |
| AT04 dimensions / weight | 45 × 100 × 81 mm; 125 g | |
| AT04 power / current | 1.5 W; 80 mA SM bus; 40 mA at 24 V DC | |
| Order code meaning | 3AT04 and 3AT08 identify four- and eight-channel thermocouple modules; 0AA0 preserves the requested article suffix | |
The Siemens 6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0 pair converts thermocouple signals into temperature data for the S7-200 SMART CPU. This detail belongs to the selected configuration and should not be inferred from the base family alone.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: 6ES7288-3AT04-0AA0 supplies four 16-bit TC inputs; 6ES7288-3AT08-0AA0 supplies eight 16-bit TC inputs. This detail belongs to the selected configuration and should not be inferred from the base family alone.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: temperature resolution is 0.1 °C / 0.1 °F with 15-bit-plus-sign voltage representation in the thermocouple input path. This detail belongs to the selected configuration and should not be inferred from the base family alone.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: selectable 10, 50, 60 or 400 Hz rejection, integrating conversion and approximately ±1.5 °C cold-junction error shape the reported temperature value.
The physical and electrical limits of Siemens 6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0 determine the temperature cabinet layout. This detail belongs to the selected configuration and should not be inferred from the base family alone.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: the modules use the S7-200 SMART 24 V DC expansion supply; keep the module supply and sensor wiring within the specified limits.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: the thermocouple cable run is limited to 100 m with up to 100 Ω wire resistance in the selected arrangement. The complete cable path is kept with the installed configuration.
6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0: field-to-logic, field-to-24 V DC and 24 V DC-to-logic isolation are 500 V AC; range and open-circuit status must be handled in the CPU program.
Siemens 6ES7288-3AT04-0AA0 has four thermocouple channels, while Siemens 6ES7288-3AT08-0AA0 has eight. The point count changes the channel map and available terminal wiring, so the exact article must match the configured project.
The input range, cold-junction calculation and temperature scaling depend on the selected thermocouple type. Siemens 6ES7288-3AT04-0AA0 cannot be commissioned with a type setting that differs from the connected sensor.
The AT04 module is approximately 45 × 100 × 81 mm and weighs about 125 g; reserve terminal and thermocouple cable clearance around Siemens 6ES7288-3AT04-0AA0.
If the project expects four thermocouple inputs, Siemens 6ES7288-3AT08-0AA0 changes the expansion record to eight channels and should not be substituted without revising the hardware configuration.
The selected 10, 50, 60 or 400 Hz rejection and the thermocouple cable routing affect the measured value; keep the cable within 100 m and configure the filter for the required response.
The controller program should process the module's open-circuit and range status instead of treating an invalid channel value as a valid temperature reading.
Moore Automation handles industrial automation records across sensing, control, PLC and monitoring product families.
The selected Siemens article remains under its original manufacturer and exact model while the enquiry is prepared. The exact record remains 6ES7288-3AT04-0AA0 / 6ES7288-3AT08-0AA0.
| Bently Nevada3500/33-SIL2-03-01 | Vibro-MeterMPC4 200-510-070-113 | Woodward8200-1355 |
| Siemens6ES7288-2DT08-0AA0 | ABBCI854AK01 | Allen-Bradley1734-TOP |
| HoneywellFC-SAI-1620M | YokogawaAAB841-S50/M4A00 | EmersonKJ3001X1-BA1 |
| Triconex3009X | HIMAF35 | FoxboroRH101DF |
| Bently Nevada3500/92-04-01-01 | Vibro-MeterMPC4 200-510-074-113 | Woodward8200-188 |
| Siemens6ES7288-2DT16-0AA0 | ABBCI840A | Allen-Bradley1734-TB |
| HoneywellCC-PUIO31 | YokogawaAAI543-S60/A4S00 | EmersonKJ3001X1-BB1 |
| Triconex3010X | HIMAF35 03/4 | FoxboroFBM214E |
| Bently Nevada330101-00-08-05-02-00 | Vibro-MeterMPC4 200-510-074-114 | Woodward9907-1200 |
| Siemens6ES7288-2DR32-0AA0 | ABBCI867K01 | Allen-Bradley1734-ARM |
| HoneywellCC-PDOB01 | YokogawaA2MMM843-SS1130 | EmersonKJ3201X1-BA1 |
| Triconex4355X | HIMAF35 030 11 | FoxboroRH101RY |
| Bently Nevada330101-00-08-05-02-05 | Vibro-MeterMPC4 200-510-076-114 | Woodward9907-173 |
| Siemens6ES7288-2DT32-0AA0 | ABBCI871AK01 | Allen-Bradley1734-VHSC24 |
| HoneywellCC-PCNT02 | YokogawaADV151-P60/D5A00 | EmersonKJ3002X1-BA1 |
| Triconex4610X | HIMAF30 | FoxboroFBM247 |
| Bently Nevada330101-00-08-10-02-00 | Vibro-MeterMPC4 200-510-078-115 | Woodward8237-2596 |
| Siemens6ES7288-2QR16-0AA0 | ABBTU810V1 | Allen-Bradley1734-SSI |
| HoneywellCC-PAIL51 | YokogawaAAV144-SK0 | EmersonKJ3002X1-BC1 |
| Triconex4701X | HIMAF60 | FoxboroRH927BN |
Send the exact model and requested quantity with your enquiry.
Moore Automation Sales Team
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