Features:
- Four analog inputs convert configured voltage or current signals into PLC data.
- Four isolated analog outputs reconstruct controller words as field signals.
- Operating modes coordinate conversion with conditional, comparator, or measurement sequences.
Two input channels are voltage-only, while the other pair accepts the documented current or voltage ranges.
Range modules and software settings must identify the same electrical configuration.
Diagnostic and end-of-cycle interrupts report different events to the CPU.
The Siemens 6ES7335-7HG01-0AB0 SIMATIC S7-300 SM 335 Analog I/O Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7335-7HG01-0AB0 SM 335 Analog I/O Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Matching field sources to the correct measuring path
- Voltage pair: Two channels receive the configured voltage ranges.
- Current or voltage pair: The remaining channels follow the selected current or voltage arrangement.
- Range module: The mechanical setting identifies the permitted input circuit.
- PLC value: Conversion places the measured result and status in the controller data area.
Turning controller words into isolated field signals
- Output word: The CPU writes the commanded analog value through the backplane.
- Range conversion: The configured channel range scales that word into voltage or current.
- Field circuit: A two-wire connection carries the generated signal to the receiving device.
- Reference path: Analog reference and sensor-supply wiring follow the documented common arrangement.
Selecting when conversion and comparison occur
- Free cycle: Input and output processing repeats continuously.
- Conditional mode: An assigned condition controls when the conversion sequence is handled.
- Comparator mode: The module compares the configured values within its processing cycle.
- Measuring only: The selected mode limits the task to acquisition without normal output processing.
Distinguishing channel conditions from cycle completion
- Parameter error: A configuration mismatch prevents the intended channel range from operating.
- Wire or range fault: The module reports supported field-side diagnostic conditions.
- Diagnostic interrupt: The CPU receives a module diagnostic event through the rack.
- End-of-cycle interrupt: A separate event indicates completion of the configured processing sequence.