Function Blocks

[Satpal 0]

Error 9691: Public elements of function block instance variables must be passed by value [LD Block,'PUMP_CALLS': Rung 2] I get the above error when i use an element of a non-local function block instance variable as an input to another function block. I have already specified the input parameter to the function block to be "Pass by Value", yet i still get this error. Any ideas ? P.S. i am using Proficy Machine Edition v5.5 (Logic Developer PLC) for a PACSystems RX3i system.

[RussB 22]

Two things to look for. 1. Verify that the variable has the correct data type. 2. Verify that the variable has the correct number of paramaters and that each of these have the correct data types. If this does not help send GE Fanuc an email at support@gefanuc.com along with a description of the problem and a backup of the project.