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SIEMENS / SIMATIC / S7-1200 / ANALOG I/O
6ES7231-5QD32-0AB0
SM 1231 TC · 4 × 16 Bit Thermocouple Analog Input
The Siemens 6ES7231-5QD32-0XB0 is an SM 1231 thermocouple signal module for SIMATIC S7-1200 systems. It provides four analog thermocouple inputs and supports a broad range of thermocouple types, making it suitable for temperature acquisition in machine and process-control applications where several temperature points must be brought into the PLC at the same time.
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PRODUCT ID
6ES7231-5QD32-0XB0
Built for temperature acquisition within the modular S7-1200 architecture.
INDUSTRIAL TEMPERATURE ACQUISITION
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01 / PROFILE
Temperature
Signal Layer |
The 6ES7231-5QD32-0XB0 adds four thermocouple-capable analog inputs to a SIMATIC S7-1200 configuration. Each channel can be used for thermocouple measurement or voltage measurement within the specified input range. The module supports thermocouple types B, C, E, J, K, N, R, S, T and TXK/TXK(L) to GOST. The measurement principle is integrating. The module provides 15-bit resolution plus sign, configurable measured-value smoothing, and interference-voltage suppression of 85 dB at 50 / 60 / 400 Hz. Diagnostic functions include supply-voltage monitoring and wire-break detection. |
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CORE PARAMETERS
Signal Architecture
Signal stability
85 dB interference suppression at 50 / 60 / 400 Hz and 120 dB minimum common-mode interference suppression support stable acquisition in electrically demanding automation environments.
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ENGINEERING DATA
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SUPPORTED TC TYPES
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B C E J K N R S T TXK / XK(L) |
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02 / FIELD ROLE
When Temperature
Signals Matter In an S7-1200 control cabinet, this module is positioned at the temperature-acquisition layer. It is particularly relevant where several thermocouple points must be monitored by one controller, such as heating equipment, thermal processing, machinery temperature supervision and process-control installations. |
Diagnostic-oriented replacement logic
The module supports diagnostic alarms and readable diagnostic functions, including supply-voltage monitoring and wire-break detection. When a channel fault cannot be resolved by sensor, wiring or configuration checks, matching the existing module's article number becomes important for minimizing control-system intervention. |
The S7-1200 signal-module range provides modular expansion for different analog measurement requirements. Within the SM 1231 temperature-input family, thermocouple and RTD variants address different sensor technologies and channel counts.
| Family variant | Article number | Channel architecture | Primary measurement |
| SM 1231 TC | 6ES7231-5QD32-0XB0 | 4 × 16 bit | Thermocouple |
| SM 1231 TC | 6ES7231-5QF32-0XB0 | 8 × 16 bit | Thermocouple |
| SM 1231 RTD | 6ES7231-5PD32-0XB0 | 4 × 16 bit | RTD |
| SM 1231 RTD | 6ES7231-5PF32-0XB0 | 8 × 16 bit | RTD |
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04 / FAQ
Five Questions Before Replacement
Focused on the practical decisions that usually matter when a temperature-input module is being replaced inside an operating S7-1200 installation. |
01 — Can 6ES7231-5QD32-0XB0 replace a failed four-channel S7-1200 thermocouple module without changing the temperature sensor type?
It is intended for four thermocouple inputs and supports types B, C, E, J, K, N, R, S, T and TXK/XK(L). Before replacement, the existing channel configuration and sensor type should be matched with the required application. 02 — Does 6ES7231-5QD32-0XB0 provide enough signal resolution for temperature-control feedback?
The module provides up to 15-bit resolution plus sign and a temperature resolution of 0.1 °C / 0.1 °F. The actual control performance still depends on the thermocouple, installation, process conditions and controller configuration. 03 — What should be checked when 6ES7231-5QD32-0XB0 reports a temperature-channel fault?
Check the thermocouple wiring, sensor condition, channel configuration and module supply. The module provides wire-break diagnostics and supply-voltage monitoring, which can help distinguish a signal-path problem from a module or supply issue. 04 — Why might 6ES7231-5QD32-0XB0 be selected instead of the 8-channel 6ES7231-5QF32-0XB0?
The principal distinction is channel count: the 6ES7231-5QD32-0XB0 provides four thermocouple inputs, while the 6ES7231-5QF32-0XB0 provides eight. The four-channel version can be appropriate when the machine requires fewer temperature points and a compact I/O expansion. 05 — What makes 6ES7231-5QD32-0XB0 a useful spare for temperature-critical S7-1200 machinery?
It combines four thermocouple channels, broad sensor-type support, configurable measured-value smoothing, diagnostic functions and a compact 45 × 100 × 75 mm housing. Keeping a matching module available can reduce the time required to restore temperature acquisition after an unexpected I/O failure. |
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05 / SUPPLY & SERVICE
Prepared for Time-Critical Replacement
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QUOTE CHECKPOINT
Send Five Details
Part Number — exact article number Quantity — required quantity Destination — delivery location Required Date — target arrival date Machine/System — installed equipment or application Providing these five details helps us assess the replacement requirement and arrange the quotation more efficiently.
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 GLOBAL INDUSTRIAL COVERAGE
PLC · DCS · I/O · CONTROL · MONITORING
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Automation Parts.
Faster Recovery. Amikon supports industrial automation maintenance with a broad portfolio of PLC modules, DCS components, control boards, robot spare parts and monitoring-system components. The service focus is simple: shorten the distance between a failed component and the operational part needed to restore equipment.
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A mixed selection of industrial automation components for maintenance, retrofit and control-system requirements.
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08 / CONTACT AMIKON
Need the right replacement?
Send the exact part number together with quantity, destination, required date and machine/system information. Our team can then check the replacement requirement and arrange the next step. EMAIL SALES sales@amikon.cn PHONE / WHATSAPP +86 18020776792 |
SALES MANAGER
Miya Zheng
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Please contact us within 7 days if you have any question after receiving the items.
Returned items must remain in their original condition and be accompanied by a specific reason for the return. After the returned items are received, we will arrange a return or replacement according to the case.
The buyer is responsible for shipping costs incurred in connection with the return.
Product module 15499-146/8 Brands Siemens Payment Paypa/TT Condition 100% New Weight 2.86kg Production year 2024 country of origin Germany
Product module 6DD7060-1AA06 Brands Siemens Payment Paypa/TT Condition 100% New Weight 2.2kg Production year 2024 country of origin Germany
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
Email : sales3@amikon.cn Mobile : 86-18030235311 Skype : jessica01235483 Wechat : hu18030235311
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