The error code "2110" is "SP.UNIT ERROR.". This error may be caused by one of the following factors.
(1) The module that has been specified by a FROM/TO instruction is not an intelligent function module/special function module.
(2) The module that has been specified by a FROM/TO instruction does not have buffer memory.
(3) The intelligent function module/special function module that a FROM/TO instruction has specified as an access target is
out of order.
(4) An instruction that targets CPU shared memory has specified an unmounted CPU module.
The FROM/TO instruction that has caused the error can be specified using the error jump of the diagnostics
function (PLC diagnostics) provided by the programming tool, GX Developer or GX Works2.