106Chapter 55.3.3 Calculation Between ControllersAmong controllers connected with controller communication unit, designatetwo units to perform calculation and make judgment according to the resultof calculation.Suppose that detected values at two units are "A" and "B". The following cal-culations can be made.Addition: A + BSubtraction: A - BDetected values A and B are scaled on the corresponding controller. To offsetcalculation, offset the displayed value in advance, using scaling.Setting exampleSetting procedure for subtracting controller address 2 from controller address1 to make judgment at address 1 controller1.According to step 4 in the description of section "5.3.2 Connection ofController Communication unit and Address Setting", perform auto-matic assignment of the controller address.2.At the address 1 controller, set the following equation.(Value of controller 1) - (Value of controller 2)Another controller cannot start calculation through data communication tothe two calculating controllers.The analog voltage output is the value detected at each controller. Theresult of calculation is not output.NoticePressto select "com".Pressto select"sub" (subtraction).SetController address 1Pressto select "2".Controller address 2SubtractionAdditionNo calculationPressthree times to return to the detection state.The value displayed at this time is the calculatedvalue.To make a judgment, enter the upper and lower limitsfor the calculated value.To check the detected value of the controller, pressthekey. The value is displayed on the upper line.At address 2 controller, ""is displayed forequationdisplay,toindicatethatdataissenttoaddress 1.Pressto move to controlleraddress selection.If an address used for calculation of anothercombinationisdesignated,error""isdisplayed. If no controller is found at the addressdesignated for calculation, error "" isdisplayed.Check the connection of controller communi-cation units (GP-XCOM) and specified address.Pressto reset after the error and to returnto normal operation.
