45513 - Unable to open display. display is currently controlled remotely
Access Level: TechConnect
You probably cannot read that TechConnect level article?
It basically explains what Bmoore14 is suggesting. The HMI application is most likely using Global Connections to allow the assumed PLC to set the current display number by writing different values to the PLC tag that has been assigned to the Global Connection tag - Remote Display Number. As long as this tag has a non zero (0) value the current display number will be governed remotely.
It appears as though the contractor may not have handled this properly in the assumed PLC? If it should be allowed to control the current display number locally, using the likes of a GotoDisplayButton object, as you appear to be doing, then they should have faciltated this function. As mentioned, a physical button or selector with an input to the PLC is one method. When the input is ON the PLC sets the Remote Display Number tag to zero, usually indefinitely. Another method might be a user login on the HMI, of which the PLC can also monitor via Global Connections, and if the logged in user level permits, the PLC similarly sets the Remote Display Number to zero. Or at a simpler level it can just be a button object on the HMI that sets the display number control to local by indicating to the PLC as such and the Remote Display Number tag is set to zero.
Whichever method is used to set the tag to zero for local control, it is usually good practice during this status to also inhibit any PLC logic which may simultaneously attempt to write a non zero value to the tag.
You don't really switch between local and remote display navigational control. More, you disable remote control, thus allowing local control to function.
It may be that they have attempted to implement both remote and local display navigation but have made a simple error or two which needs some attention.
What we are talking about here may involve the use and possible editing of both the PLC program and the HMI application. Access to and some knowledge of both programming software packages may be required.
This may be outside your area of expertise?
i.e. There may not be a quick fix to this problem.
Regards,
George