Exceeding the filter frequency
Input filters are used for interference suppression at the encoder and digital inputs. Different filter frequencies can be parameterized according to the application.
The individual inputs are subject to the following filter frequencies:
Inputs | Max. recommended filter frequency |
|---|---|
Encoder inputs: track A, track B, track C | RS422 mode: 5 MHz TTL mode: 1 MHz Open Collector: 100 kHz |
Latch input | 1 MHz |
Gate/Latch input | 1 MHz |
Status Input | 100 kHz (not adjustable) |
- If a frequency overrun is detected when the filter is enabled (0x8000:08 and 0x8001:19), a counter in index 0xA000:16 is incremented.
Index (hex) | Name | Description |
|---|---|---|
0xA000:14 | Filter violation counter extern latch | Filter frequency overshoot counter for the Latch extern input |
0xA000:15 | Filter violation counter input gate | Filter frequency overshoot counter for the Gate input |
0xA000:16 | Filter violation counter | Filter frequency overshoot counter for the encoder input signals with enabled filter |
Notice | ||
 | Note Parameterization of adjustable interference pulse filters Please note the description and notes for parameterization in chapter “Adjustable interference pulse filters”. | |