Silver Series Installation and Operation Manual, Rev B ... - Watlow

Connect the HMI to the PLC or Controller 27TroubleshootingThe HMI must be connected to a PLC/controller in order for the project to run correctly in the HMI. If there is aproblem with communications between the HMI and PLC/controller, the “PLC no response” message (window 5) willappear on the screen and objects addressing PLC registers will not appear on the screen. Here are some things tocheck if this occurs:1. Make sure you have selected the correct communication protocol (driver) for the PLC you are using in theSystem Parameters (Edit > System Parameters > Device Properties). The demo version of EasyBuilder-5000 will not download the driver to the HMI and will automaticallygenerate a “PLC no response” error message.2. Make sure the communication settings in the HMI (Edit > System Parameters > Device Properties) match thecommunication settings in the PLC.3. Make sure the communication cable is wired correctly for your application. Refer to the Controller CableAssembly drawings on our website for specific cabling information for your PLC/controller.(http://www.maplesystems.com/cables1023.htm).4. Check the address formatting for objects that are reading from or writing to registers in the PLC. If theobjects cannot access specific registers in the PLC, they will not appear on the screen. Refer to the ControllerInformation Sheet for your particular PLC/controller for specific information about accessible registers in thePLC memory and the correct addressing format for the various registers.(http://www.maplesystems.com/products/prodbycon-bot.htm)0600-0069-0000 Rev. B