6. Function blocks6.1 Manufacturer function blocks6.1.7.7 LB - Jump labelGeneralThis function block is only available when using the EDP(easy Device Programming) programming language.easyE4base devices provide 32 jump label function blocks,LB01 through LB32.Within a function block diagram, an LB jump label is used as ajump target for a conditional jump implemented with the JCfunction block.JC.. and LB.. must always be used in pairs.Operating principleThe jump label function block does not have to be linked or assigned parameters. It onlyhas to be placed at the appropriate position in the function block diagram.A corresponding JC.. function block (conditional jump) must exist for every LB.. functionblock. Conditional jump JC01, for example, is always associated with jump label LB01.Seen from the corresponding conditional jump function block, the jump label mustalways be downstream. In other words, it must be closer to the end of the functionblock diagram.If the jump label is located upstream of the jump location (backward jump), the programwill branch off to the end of the function block diagram. In this case, the conditionaljump function block output will be set to state E1 = 1.OtherLinking and parameter settingIn the function block diagram view, drag the function block to the position you want.Then go to the Jump label parameters tab and select the same function block numberyou originally assigned to the corresponding conditional jump function block.You can also move this function block later on. To do so, right-click on the function blockyou want to move and then select the Move... option.easyE4 11/18 MN050009 EN www.eaton.com 391
