This tool downloads compressed control applications to local or remote Unitronics controllers. You generate a compressed application from within either U90 Ladder or VisiLogic. Your end user will be able to download the application, but will not be able to view or modify it. The tool can download applications and OS.
Expansion IO HSC cannot be reset direct.
There is communication delay both directions - PLC to IO and IO to PLC.
After you reset linked to Expansion IO HSC , it overwritten by a new value, received from module.
You have to use Virtual Counter and reset it at PLC.
See attached example.
Expansion HSC reset.vlp
some time ago I wrote a small application for ammonia storage in chemical factory. Just some measurements, valves and communication to SCADA system.
One day, the guys from the factory asked me to perform a routine check of the system. OK, I arrived to site and had a call with control room about the tests.
One of the prescribed tests was simulating overpressure in the storage and checking if the alarm is sent to control room properly. The emergency valves were electrically disconnected to prevent leakage of the ammonia.
Everything went smoothly, alarm was raised, the control room confirmed alarm so I switched back to real measurement, when...
What the hell? I hear sirens. I just ran out from the equipment room and I saw four red emergency trucks arriving in front of the room. Something went terribly wrong. Maybe the electrician guys disconnected the wrong valves and ammonia leaked due to simulated alarm? My world went black. Emergency situation in the town, probably I will be fired from the company.
I found the leader of the emergency group and I shouted at him: "It was my fault, how dangerous is the contamination?"
The guy replied: "What contamination? We were just asked for a presentation for local TV."
Damn, I will never forget that day.
i'm struggeling to have a UDFB to store the PLC timestamp in a string with the following format: YYYY-MM-DD HH:MM:SS
This is highly needed to insert timestamp values in SQL tables with the datatime field or timestamp field.
I tried to use the RTC to ASCII UDFB but this format is not possible, also not when combining strings. A simple UDFB should do wonders here