FX2N High speed counter max freq

[ETR Automazione srl 0]

Hi, i have a problem with an old FX2N and an optic row with particular resolution. Now i must to change the optic device with a new one, but the standard resolution on the market it's not the same. I have 0.0025 mm res connected on C251 A/B counter (without M8198 the resolution of the counting is 0,01 mm). To decide the new model, i can buy a 0,01 resolution and use the M8198, but the frequency on the PLC go down from ?? kHz to ?? In the software i use 3 times DHSCR. In this time i have a new device with 0.005 resolution, so the double from the original, and i must to modify all the reference system on the PLC with a factor x2. Best regards Ennio

[Crossbow 295]

FX2N Hardware manual lists the speeds of the built-in inputs.