Reset to factory settings

[kris9660]

Hey,

 Isthere a way to go to the factory settings without PC?

 

Thanks,

[dan]

Hi Kris9880,

 

What type of Unitronics PLC do you have? Each PLC has an option for BootStrap mode and Stop Mode. Instructions on how to get to these modes vary between controllers. Within these modes, the program stops, and the PLC communication settings are reset. 

 

What are you attempting to do in this mode?

 

Thanks, 

 

Dan. 

[kris9660]

Hi,

 

 I have JZ20 T18.

 

 I have communication problems  after i download a program with SI140 = -1 (STX  parameter"no start of text " RS232).

 

When I set de communication parameter on de plc to default ,and i go to BootStrap  "key "i" + "7" with power up, then i have a connection with de plc.

 

After i do an upgrade of OS  (uprade wel done)  and de plc restart , i have NO Connection U90 >plc.

 

Is it possible for delete de program without pc(U90). with key combination or dipswitches ...

 

I want a clean empty plc.

 

Thanks,

Kris

[Chad2014]

Hi,  Did this ever get an answer?

I am having exactly the same trouble.

Thanks

Chad

 

[Joe Tauser]

Chad,

Are you using a Special Function as well?  Kris put the -1 in the wrong place - it goes in SI 141, not SI 140.  I have no idea what happens if you put a negative number in the Special Function pointer code register SI 140.  He probably made the PLC barf.

Joe T.