RELIANCE S-D4006處理器模塊
連接錯誤CI854/CI854A主機與從機之間的通信由主機和從機兩個單元監控。在發生錯誤的情況下，主機和從機側將發生特定反應。另請參閱第25頁的監控DP-V0通信。如果CI854/CI854A主設備檢測到與從設備的通信中斷，則特定從設備將顯示錯誤“連接斷開”。AC 800M控制器停止復制輸入數據，并激活相關變量的ISP（預設輸入設置）控制。在“連接關閉”期間，錯誤/警告和報警/事件的狀態不會改變。如果重新建立連接，狀態將更新。如果從單元檢測到與主單元失去通信，則激活相關輸出通道的OSP（輸出設置為預定）控制。
Connection Error
The communication between the CI854/CI854A master and the slave is monitored
by both units, the master and the slave. In case of an error, specific reactions on the
master and the slave side will take place. Please refer also to Monitoring the DP-V0
Communication on page 25.
If the CI854/CI854A master unit detects the loss of communication with the slave
unit the error “Connection down” will be indicated for the specific slave. The
AC 800M controller stops the copying of input data and activates ISP (Input Set as
Predetermined) control for the related variables. During “Connection down” the
status for Error/Warning and Alarm/Event will not change. If the connection gets reestablished the status will be updated.
If the slave unit detects the loss of communication with the master unit it activates
the OSP (Output Set as Predetermined) control for the related output channels.
