mx2 control with modbus

[Bobodopalus]

Hi all

im back to trying to get my inverter to work but this time with modbus, from this post http://forums.mrplc.com/index.php?/topic/38445-controlling-mx2-inverter-without-modbus/

and im stumped, im sure its just one thing somewhere messing it up

i have a cp1l-el20 with a cp1w-cif11 and a 3g3mx2 inverter and am attempting to control it via modbus, it is wired up as follows, sp+ to RDB+, sn- to RDA-, common to the plc pin and plc output pin 100.00 to logic input 1.

im using 100.00 to put it into run mode

the paremeters ive put in are a1=3,a2=1, a4=50, c070=3, c071=5,c072=1, c074=00, c075=1, b27=1.

im using MOV to set my speed to d1001

attached is my inv002_refresh x31 fb

thanks to any1 who can see my silly mistake

 

 

Edited March 31, 2020 by Bobodopalus
added info

[Bobodopalus]

getting back on it this morning, i just set the error FB locations up and im constantly getting a busy flag

[Bobodopalus]

just to add to this, ive been on the phone with omron for a long time changed the scanlist to #2 but still no luck, the person at omron had a go with my code with no luck until he changed the data area to W however when i applied this still no luck

[Bobodopalus]

for anyone who finds this in the future, it eventually worked, i think it was clearing the settings which got it working in the end

[BITS N BYTES]

Congrats mate! You didn't give up. Can you enlighten us how you got it working after initial problems?

[Bobodopalus]

omron support got it to work by changing the area id to W instead of D as well as changing the MOV to the new W address, for whatever reason that fixed it, he wasn't too sure why

[Arpad Nagy]

Hi All,

I want to control MX2 Inverter with basic Modbus commands (32300...).
Read holding registers and write frequency works nicely.

I have a problem with the start / forward/ reverse / stop commands.
32300:1 , 32301:5 , 32302:4 , 35303:0001 (coil-hex), 35304:1 (run command)

MX2 manual  page 307

Please give me some information regard to this!