GX works 2 - Special Relay (SM_ _ _) for a 0.5sec Pulse

[Stuart_Wales]

All,

I remember using a special relay in GX developer many moons ago for a 0.5sec pulse where I copied the SM4xx number from earlier in the program. I forgot the number and can't recall the plc program... so does anyone know if off hand. Using the manual, I've imported the comments but can't see one for 0.5sec; even though I'm confident it's there!

Thanks in advance

 

 

[Gambit]

You probably used SM415 with a value of 500 in SD415

Edited August 29, 2017 by Gambit

[kaare_t]

I cannot remember that there was a 0.5sec clock in any Mitsubishi PLC. But if you need a pulse every 0.5sec, you can use PLS/PLF on the 1sec clock (which alternates 0.5sec ON/OFF). Here's something straight from my head (not correctly code-formatted, but you'll understand the functionality):

SM412 -> PLS M0
SM412 -> PLF M1
M0 OR M1 -> M2

This will make M2 pulsate every 0.5sec.

[Stuart_Wales]

Hmmmm, thanks for the replies (as always) but I'm sure there was another way to both suggestions and will try and dig it out haha. Both make perfect sense though.

[WattUp]

Attached is a guide to all the SM _ _ _ Relays.  

SpecialRelayList.pdf