57PfofiBus Gateway5.3.2 Gateway Control/Status SignalsThe initial fixed area in the address configuration is used by signals that control the gateway unit, andconsists of four input bytes and four output bytes.These signals are used to control the ON/OFF of SIO communication and monitor the SIO communicationstatus and gateway unit status.Byte addressGatewaycontrol signal 0Gatewaycontrol signal 1Gatewaystatus signal 0Gatewaystatus signal 1PLC outputPLC input* The byte address is indicated as a relative byte address from the initial byte-address byte of thegateway.