Using a transfer station blocks are to be transferred from a magazine to a processing station. The blocks are pushed out of the magazine by cylinder $1$A and transferred to the processing station by cylinder $2$A$.$ Both the cylinders retract at the same time towards the end of the cycle. If cycle is already in progress pressing start button $($S$1)$ does not interfere with the existing cycle. The magazine is monitored by means of a limit switch. If there are no more blocks in the magazine, it is not possible to start the cycle. This is indicated by means of an indicator light. In reference to the control circuit shown below complete control and the logic circuit so that the above mentioned sequence can be implemented. Also draw the step displacement diagram in the space provided $-$below $[17$ M$]$

Logic circuit: