Input Status Input
If the encoder has an error signal or status output, in single-channel mode this can be connected to the Status input of the terminal and evaluated. The input is 5 V compatible.
The error signal or status output at the encoder is usually implemented with negative logic. This is indicated by the terminal as follows:
Encoder | EL5112 (single-channel mode) | ||
|---|---|---|---|
Fault signal output | Status Input input | Status Input LED | Meaning |
HIGH level / output open | TRUE | Off | e.g. encoder OK |
LOW level / PullDown - level is actively pulled down to LOW | FALSE | Red | e.g. encoder faulty |
If an overvoltage is present at the Status Input, it is displayed as follows:
Fault diagnosis in case of overvoltage at the Status Input | Display |
|---|---|
DiagMessage, type "Error", text ID 0x8315 | Error status input (channel n) |
0xA0n0:05 "Error input status" | TRUE |
LED: Status Input Ch. n | Red |
Notice | |
Wiring of the Status Input In the terminal the Status Input is internally connected to 5 V via a pull-up resistor (1 kΩ). The encoder output must actively pull the signal against GND. The resistance must be dimensioned so that it is less than 120 Ω. External power supply is not recommended. If an external supply is used, the maximum permitted voltage is 5 V against GND. |