31.5.11 Pulse Catch (LT Series)

Pulse catch is a feature that imports pulse signals that are shorter than the logic scan time. You can import pulses longer than 10 microseconds (ON for more than 5 microseconds).

A maximum of four input channels can be set for a pulse catch in the LT3000 Series, and two input channels in the LT4000 Series, which can be individually set.

Summary

The procedure for setting the pulse catch is summarized below.

Set the input edge.
31.5.11.1 Input Edge - Pulse Catch (LT Series)
See "Special I/O state" for acknowledgment.
31.5.11.2 Pulse Catch Input Status - Pulse Catch (LT Series)

Part of the settings can also be set up with logic program I/O driver instructions.
32.23 I/O Driver Instructions
When you want to clear the pulse catch, see the following.
31.5.11.3 Pulse Catch Clear - Pulse Catch (LT Series)