Parameters for the TB20 Analog input module
- Diagnostic alarm: On | Off
- Overflow/underflow diagnosis: On | Off
- Representation values: SIMATIC* S7 | SIMATIC* S5 (for ?80 mV only)
- Temperature unit: Celsius x 10 | Fahrenheit x 10 | Kelvin x 10
Parameters for each channel
- Wire break detection: On | Off
- Interference frequency suppression: None | 10 Hz | 50 Hz | 60 Hz | 400 Hz
- Measuring ranges: ?80 mV
- Thermocouples: E | J | K | N | R | S | T | B | C | L
- Temperature compensation: Internal | External | Process data-based
- Limit value alarms enabled: On | Off
- Upper/lower limit: 16 bit analog value (?27648)
Channel LED signals
| Flashing red light | Parameter assignment error on channel | |
| Solid red light | Reading overflow/underflow or wire break | |
| Flashing green light | Reading within overrange | |
| Solid green light | Channel configured, normal reading | |
| Off | Channel deactivated or module not yet parameterized |
- Measuring range ?80 mV
- Supported thermocouples: E, J, K, N, R, S, T, B, C, L
- Measurement resolution: 15 bits + sign
- External or internal temperature compensation
- Wire break detection
- Diagnostic messages
- Limit value alarms for each channel
- A bi-color LED (blue/red) indicates the module operating status and any malfunctions
- Red/green bi-color LEDs (one for each channel) indicate the channel status
- 4 inputs, electrically isolated from the backplane bus
- 4 process input words
- 4 process output words (for temperature compensation)
Part of the Helmholz decentralized fieldbus I/O system – TB20
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