RELIANCE S-D4006處理器模塊
連接錯(cuò)誤CI854/CI854A主機(jī)與從機(jī)之間的通信由主機(jī)和從機(jī)兩個(gè)單元監(jiān)控。在發(fā)生錯(cuò)誤的情況下，主機(jī)和從機(jī)側(cè)將發(fā)生特定反應(yīng)。另請(qǐng)參閱第25頁的監(jiān)控DP-V0通信。如果CI854/CI854A主設(shè)備檢測(cè)到與從設(shè)備的通信中斷，則特定從設(shè)備將顯示錯(cuò)誤“連接斷開”。AC 800M控制器停止復(fù)制輸入數(shù)據(jù)，并激活相關(guān)變量的ISP（預(yù)設(shè)輸入設(shè)置）控制。在“連接關(guān)閉”期間，錯(cuò)誤/警告和報(bào)警/事件的狀態(tài)不會(huì)改變。如果重新建立連接，狀態(tài)將更新。如果從單元檢測(cè)到與主單元失去通信，則激活相關(guān)輸出通道的OSP（輸出設(shè)置為預(yù)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.
