Furuno CN-24, Service Manual

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2-13
1 Down SYNC code detection command
2 Detection report
3 Temperature data acquisition command
4 Acquisition report
5 Down sounding data acquisition command
6 Acquisition report
7 Depth data(MSB) acquisition command
8 Acquisition report
9 Up SYNC code detection command
10 Detection report
11 Catch monitor data acquisition command
12 Acquisition report
13 Up sounding data acquisition command
14 Acquisition report
15 Depth data(LSB) acquisition command
16 Acquisition report
Fig. 2.17 Data Acquisition Sequence by CPUs
Reading Panel Setting Status
The operator's commands input through the control panel are all sent to the keyboard
interface chip U59 via U66. It also collects the frequency data from the AMP board and
setting of DIP switch. These status and data are acknowledged by the MAIN CPU to be
processed following the operator's settings. Namely the operator selects the presentation
mode of upward and downward combinations; for example, the MAIN CPU generates and
sends the control command to the gate array to display the designated mode.