| 摘要 |
PURPOSE:To perform both the data transmission and the error check in a simple and facilitated way by transmitting the lead-back address signal and the lead-back data signal in the form of the logic combination signal. CONSTITUTION:Program device 1 of the transmitter side sends both address signal A and data signal D corresponding to the address in question to program device 2 of the receiver side via signal lines 6 and 8. Device 2 recevers and utilizes these signals A and D and also transmits signal E obtained from signals A and D through the exclusive logic sum in the form of the lead-back data via transmission line 10. Transmitter side 1 uses data E plus signals A and D to check whether signals A and D have been received at the receiver side. |
