Control system for electronic cash register

PURPOSE:To enable the adjustment via master ECR only when the checking process is over to each slave ECR in the system comprising master ECR and plural number of slave ECR, thus avoiding the register omission due to slave ECR after adjustment. CONSTITUTION:In case slave ECR receives the checking process after finishing the register process of that day, the mode setting switch is set to mode X. And then the checking mode is secured through operation of the subtotal key, and the contents of the memory allotted to the corresponding slave ECR within master ECR is printed out to set the flag within the corresponding memory. Thus all slave ECR's complete the checking, and all flags are set. After this, if the adjustment process is desired, mode setting switch 121 is set to mode Z to make sure that all flags are set. Thus the adjustment process is possible.