Toa EXES-6000, Operating And Troubleshooting

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2. Principle of Data Transmitting and Receiving System
The CPU inside the CP unit has such memory that
stores the data as is shown in Fig. 42. When the
specific function code is dialed at station, the
1-word data is stored in a designated area. The
1-word data consists of 16 bits, and the 1-bit data
is expressed as 0 or 1 in binary code, with 0 set
for relay OFF and 1 for relay ON. The simplest
way of controlling the indicator or controller by the
content of the data is to directly connect between
each 1-bit data and the device via a cable. The
total number of transmission wires in this case is
equal to the number of bit data plus 1 (common
line). A system using the CP-64 requires
The data transmitting and receiving system em-
ployed in the EXES-6000 mentioned hereafter
requires only 2 transmission wires instead of
above tremendous number of wires.
Fig. 42 Memory Map in CPU
— 48 —
(16 × 32) × 15 + 1 = 7,681 wires.