When placing Readers/writers/panels on grass with grass one block away, the grass will be replaced by a cable. Item gets consumed and the cable is placed and can be picked up.

forge 2116
cyclopscore 0.8.2-432
integrateddynamics 0.6.4

It does give cool effect with tall grass ;)

Oh, how did you discover that?... :p
Must be an obscure edge case that is not properly being handled here: https://github.com/CyclopsMC/IntegratedDynamics/blob/master-1.10/src/main/java/org/cyclops/integrateddynamics/item/ItemBlockCable.java

When dowing stuff like this it is bound to happen ;)