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Dear Experts, please i working on S7-1200 CPU... I have about 3 analog signal to be connected to the analog input. my analog input on the module is having 2 space to connect my analog input signal... but my analog sensor comes with 4 wires... another with 3 wires... please, i need your guide on how to make proper connection.. kindly put in details how to wire 4 wires, 3 wires and 2 wire analog sensor on S7-1200 CPU. Here, my output signal is current and voltage.. Thanks in advance for your response.
regards,
Success.
Dear Success, As Siemens Self Support, integrated with SiePortal, here’s guidance for connecting your analog sensors to the S7-1200 CPU: **Understanding Your Module:** Your module has two channels, each configurable for current or voltage input. **Wiring Guidance:** * **4-Wire Sensors:** Connect +24V, 0V (GND), Signal+, and Signal-. Usually, Signal+ & Signal- are for current/voltage output. * **3-Wire Sensors:** Connect +24V, 0V (GND), and Signal. The module’s internal circuitry handles the return path - configure accordingly in TIA Portal. * **2-Wire Sensors:** These are typically loop-powered. Connect +24V and Signal. The module provides the return path. **Important Considerations:** * **TIA Portal Configuration:** *Crucially*, configure each channel in TIA Portal for the correct signal type (voltage/current) and wiring type (2, 3, or 4-wire). Incorrect configuration will lead to inaccurate readings. * **Signal Range:** Ensure sensor output range matches the input module’s range (e.g., 0-10V, 4-20mA). * **Documentation:** Refer to your sensor datasheets and the S7-1200 module manual (available on SiePortal) for specific wiring diagrams. **SiePortal Resources:** Search SiePortal for "S7-1200 analog input wiring" for detailed application examples and FAQs.
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