CHAPTER 4Sensor Connections165Chapter 4. Using the GatewayThis chapter summarizes all administrative settings which arerequired for the use of the A850 in a RTU network.Please keep in mind that only the system administrator (i.e. theuser named “root”, by default) has the right to make all the set-tings for the use of the Gateway. As a basic principle, all otherusers have the right to view these settings, but no rights to makechanges. The only exception to this rule is connected with thepoint “RTU Network” in the tree window (see below) whichincludes the functionality to give other user groups limited capabil-ities to make some settings of the configuration of the RTUs.Sensor ConnectionsThe addIT RTUs are equipped with cable attachments called con-nectors. The connector type determines how the respective RTUcommunicates with the attached sensor(s).The following table shows which possibilities to connect sensors orsensor systems (LC, OC, SDI) are offered by the different AdconRTUs.Sensor Class/RTU TypeAnalogInputPulseCounterDigitalI/OInternalInputLogicalChannelOutputChannelSDI-12BusA440 - - - 1 - - -A720 6 2 2 1 - - -A723 6 2 2 1 - - 1A724 6 2 2 1 - - -
