Yes, You need to change the range of the instrument in both controller ( if you have few signals) if you have more signal need to change the range of the instrument, than you can ISOLATE side A ( 21) of the controller using SYN KEY. than change the range of the required instrument. and take the Application dump using command DUAP. copy the .AD file from node 21 SRCE folder application dump to node 23 (side B) SRCE folder. now need to ISOLATE side B ( Node23) using SYN KEY. check the side A (Node21) is working fine. then clear the Side B ( Node 23) load the .AD using the command LOAP. download is over. check the both control Side A & B Synchronisation procedure and synchronise the controller.
Hi, If its a single tag and you have process team clearance..you can change range online.
take one side controller online, let us say node 21 by command SLTARG netwotk no, node no use command mdb space signal name modify the property you want to change accordingly. (this will change range of tag with immediate effect in one side controller) At this time tag on one side of controller will have new range and same tag on other side controller will have old range.
take other side controller online by command SLTARG NETWORK NO, NODE NO use command mdb space signal name modify the property you want to change accordingly.(this will change range of tag with immediate effect in other side controller)