SUBSTRATE CONNECTION SYSTEM AND INKJET RECORDING DEVICE

摘要

After powered on, a check unit rewrites a lookup table in a memory of a programmable logic circuit unit to one of lookup tables in its own memory so as to switch a circuit state that a logic circuit implements. When the check unit outputs an inquiry signal in this state and an identification signal which responds to the inquiry signal is input into the check unit from a check circuit of a sub substrate via the logic circuit and a port, the sub substrate corresponding to the identification signal is specified as a connection destination of connectors. The circuit state of the logic circuit is optimized on the basis of a result of specification of the sub substrate as the connection destination obtained by repeating the above-mentioned operation.

主权项

1. A substrate connection system, comprising:
a plurality of sub substrates; a main substrate including a plurality of connectors to which a plurality of harnesses each connected to a controlled circuit mounted on each of the sub substrates is to be connected, respectively; a main controller which is mounted on the main substrate and outputs a control signal for the controlled circuit on each of the sub substrates from each port corresponding to a sub substrate which is a transmission destination; a programmable logic circuit unit which is mounted on the main substrate and capable of switching a pattern of connection between each port of the main controller and each of the plurality of connectors; and a sub controller which is mounted on the main substrate and specifies the sub substrates which are connection destinations respectively connected to the respective connectors via the harnesses and switches the connection pattern of the programmable logic circuit unit to a pattern of connection between the specified sub substrates which are the connection destinations of the respective connectors and the ports of the main controller which output the control signal to be transmitted to the sub substrates which are the connection destinations, before boot processing of the main controller.