Raymarine Autohelm ST7000 - Cabling and Power Supplies; Signal Cabling

2.3 Cabling and Power Supplies
2.3.1 Signal Cabling System Components
Cable connections for all components are shown
schematically in Fig. 1. All components, other than
the Actuator motor, connect to the course
computer connector unit where they are
permanently wired to connector blocks mounted
on a central printed circuit board (Fig. 34).The 6m
(20ft) cable with the 3 pin connector at one end is
used to connect the first control unit to the course
computer. Additional units are connected using
SeaTalk cable either to the first control unit (see
2.3.2) or to the second SeaTalk connector block
(BUS 2) on the connector unit.
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