Safety Considerations Guide, Tricon v9.0 - Tuv-fs.com

90 TR_VOTE_MODE Function BlockTR_VOTE_MODE Function BlockConverts Redundancy StatusThe TR_VOTE_MODE function block provides an easy way to convertredundancy status from one voting mode to another, as shown in the followingtruth table.TMR GE_DUAL GE_SINGLE TMR DUAL SINGL ZEROT T T T F F FF T T F T F FF F T F F T FF F F F F F TOther 1F F F F1. If there is an error in the inputs, then CO is false, the mode outputs are false, and the functionblock reports a bad parameter error (EBADPARAM).Note To save memory and reduce scan time when using this function block,create a single instance of the function block in your program and invoke itmultiple times. Do not use the same instance more than once in a network.Parameter Type DescriptionInputs CI BOOL Control In—enables operationIf CI=FALSE, then CO=FALSE—there is nochange in the output valueIf CI=TRUE and ERROR_NUM=0, then CO=TRUEIN_TMR BOOL Three critical I/O channels operatingGE_DUAL BOOL Two or more critical I/O channels operatingGE_SINGLE BOOL One or more critical I/O channels operatingOutputs CO BOOL Control Out—indicates completion of theoperation with no errorsTricon Safety Considerations Guide