MODELMODEL 2500_______________________________________________________2500_______________________________________________________Open Boolean variable that opens the valve when setClose Boolean variable that closes the valve when setMODBUS MASTERThe MODBUS MASTER sub-menu, which is the ninth sub-menu on the MAINMENU, has a lower level sub-menu for defining two remote units. The remote unitdefinition sub-menu provides for identifying or changing the remote name ID, thecommunications address and state variable, and the control option for each of thetwo remote units.Name Identifies the remote unitCommunicationsAddress Integer variable for the communications address of theslave unit. If a communications address is not entered,the default variable is zero. When the communicationsaddress is zero, communications with the remote unit isdisabled.State Integer variable that contains the current MODBUSfunction code transmitted and received for the remoteunit. The state entry provides a means of monitoring theactivity between the master and remote units. Errorconditions are also visible by means of this variable.Control Three options available here are:IDLE Indicating no communications in progressACTIVE Indicating communications in progressFAULT Indicating failure to communicate with aslave unit________________________________________________________________________________________________________________________________________SECTIONSECTION 44 51
