Watlow Silver Series - Manual (Page 34)

26 EZware5000 Series Programming Manual
Troubleshooting
The HMI must be connected to a PLC/controller in order for the project to run correctly in the HMI. If there is a
problem with communications between the HMI and PLC/controller, the “PLC no response” message (window 5) will
appear on the screen and objects addressing PLC registers will not appear on the screen. Here are some things to
check if this occurs:
1. Make sure you have selected the correct communication protocol (driver) for the PLC you are using in the
System Parameters (Edit > System Parameters > Device Properties).
 The demo version of EasyBuilder-5000 will not download the driver to the HMI and will automatically
generate a “PLC no response” error message.
2. Make sure the communication settings in the HMI (Edit > System Parameters > Device Properties) match the
communication settings in the PLC.
3. Make sure the communication cable is wired correctly for your application. Refer to the Controller Cable
Assembly 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 the
objects cannot access specific registers in the PLC, they will not appear on the screen. Refer to the Controller
Information Sheet for your particular PLC/controller for specific information about accessible registers in the
PLC memory and the correct addressing format for the various registers.
( http://www.maplesystems.com/products/prodbycon-bot.htm )
1010-1007, Rev. 10