LVL1::IjFEXsumETAlgo Node1 LVL1::IjFEXsumETAlgo + safetyTest() + reset() + setup() + setup() + getTTowerET() + buildBarrelSumET() + buildFWDSumET() + getETlowerEta() + getETupperEta() + setFPGAEnergy() + interfaceID() Node2 IAlgTool Node2->Node1