Nguyen Duy Cong

Thanks a lot Crossbow for prompt reply! One thing make me wondering that before the error happen, the systems was operation in normal. the error not happen at the time that system was setuped. Could you tell me the detail of function: Batton Passing of Melsecnet/H (or Melsecnet/H but in a Net/10 mode). If this error can happen by the hardware error of communication module? Thanks you! ==================== Nguyen Duy Cong

Thanks for your Reply, Crossbow! Ther is a mistake with me. 7 CPU with one Master (Control Station: Station no: 01) the other CPU is setted Station no: 2 to 7. but a little wondering for the configuration in this system that PC communicate to PLC which Module QJ71BR11 is install and seted Station no: 07 as a Nomal Station not as a Control Station. After check online, All I see the result on GX - Develop is focus on Batton pass error, but I cant find the reason why to happen this error at now. Because before the system is nomal operation. Crossbow, Could you show me the reason why? Thanks you first! ================= Nguyen Duy Cong

Dear All: Now, I have a Melsecnet/H (Melsecnet/10 Mode setting) system using QJ71BR11 module. All of PLC CPU in this system is Q02CPU. This system communicate to PC by QJ71E71-100 module for Supevisor. My system has 7 CPU, one Control station (Station no: 1) and 6 Nomal Station (Station no 2 to 6). PC communicate to system by QJ71E71-100 is installed on PLC which Station no was set:07. Now, the LED L.Error on QJ71BR11 some time flash. This happen with the period. but then it seem PLC reset it self. After checked online by GX Developer, I received state of some SB bit with detail: SB70=1 (ON) SB74=1 (ON) SB44=1 (ON) SB48=1 (ON) SW70=1111111 SW74=111000 With this problem i'm not sure it cause by Configuration or Hardware module error. Who can help me how to repair this error. Thanks for all. ==================