DSDP170通信模塊
本章介紹了檢查系統(tǒng)狀態(tài)的機(jī)制：系統(tǒng)故障觸點(diǎn)。使用程序中的這些預(yù)定義聯(lián)系人檢查：特定故障，如系統(tǒng)配置不匹配、機(jī)架丟失或總線故障。
故障/無故障點(diǎn)觸點(diǎn)。使用這些觸點(diǎn)監(jiān)控單個(gè)、離散和模擬點(diǎn)的故障或缺乏故障狀態(tài)。
故障/無故障用戶觸點(diǎn)。使用這些聯(lián)系人可監(jiān)視的狀態(tài)FIP網(wǎng)絡(luò)上的設(shè)備。
報(bào)警觸點(diǎn)：使用這些觸點(diǎn)監(jiān)控模擬參考是否：達(dá)到其報(bào)警上限或下限。
故障表：PLC的故障表提供了更廣泛的系統(tǒng)操作視圖，以及幫助指示多個(gè)故障和報(bào)警之間的因果關(guān)系。
總線控制器和信道狀態(tài)位：使用這80個(gè)狀態(tài)位監(jiān)控操作總線控制器和兩條總線，并監(jiān)控多達(dá)32TCP/IP通信信道。附加診斷
本章描述了FIP總線控制器對(duì)網(wǎng)絡(luò)故障的正常記錄
第8章解釋了網(wǎng)絡(luò)故障信息如何存儲(chǔ)在選定區(qū)域中以及如何將某些網(wǎng)絡(luò)故障記錄到PLC故障表中
殘廢系統(tǒng)故障觸點(diǎn)在%S內(nèi)存中有預(yù)定義的昵稱和位置。他們可以包括在應(yīng)用程序中以檢查故障相關(guān)條件。以下系統(tǒng)故障觸點(diǎn)對(duì)于具有FIP總線控制器的系統(tǒng)特別重要：PLC系統(tǒng)包括一個(gè)總線控制器。在CPU配置期間，系統(tǒng)狀態(tài)故障LOS_IOC已被指定為診斷（而非致命）故障。LOS_ IOC表示總線控制器的丟失；如果發(fā)生這種情況，IOC故障的損失將被置于I/O故障表。在本例中，應(yīng)用程序還監(jiān)控LOS_IOC
參考如果設(shè)置了該參考，則觸點(diǎn)將功率流傳遞到輸出線圈，輸出線圈使操作員面板上的警告燈通電。故障和無故障觸點(diǎn)可用于檢測系統(tǒng)上的故障或缺少故障條件離散（%I）或模擬（%AI）參考。
故障觸點(diǎn)[故障]將檢測離散或模擬輸入或輸出中的故障，或系統(tǒng)的硬件組件。如果參考有以下情況，則觸點(diǎn)通過功率流：錯(cuò)誤。故障和無故障觸點(diǎn)由來自輸入模塊。如果無法使用驗(yàn)證器信息，例如設(shè)備失去電源或網(wǎng)絡(luò)連接，或數(shù)據(jù)未刷新或未激活，故障觸點(diǎn)將由FIP總線控制器設(shè)置。如果未配置驗(yàn)證程序信息對(duì)于消耗，永遠(yuǎn)不會(huì)設(shè)置故障觸點(diǎn)。
This chapter describes mechanisms for checking the status of the system:
System Fault Contacts. Use these predefined contacts in the program to check for
specific faults such as System Configuration Mismatch, Loss of Rack, or Bus faults.
Fault/No Fault Point Contacts. Use these contacts to monitor individual discrete and
analog points for their fault or lack of fault status.
Fault/No Fault Subscriber Contacts. Use these contacts to monitor the status of
devices on the FIP network.
Alarm Contacts: Use these contacts to monitor whether analog references have
reached their upper or lower alarm limits.
Fault Table: the PLC’s fault tables provide a broader view of system operations and
help indicate causal relationships among multiple faults and alarms.
Bus Controller and Channel Status Bits: Use these 80 status bits to monitor the
operation of the Bus Controller and two busses and to monitor the status of up to 32
TCP/IP communications channels.
Additional Diagnostics
This chapter describes normal logging of network faults by the FIP Bus Controller.
Chapter 8 explains how network fault information can also be stored in a selected area
of PLC memory, and how logging certain network faults into the PLC fault table can be
disabled.System fault contacts have pre-defined nicknames and locations in %S memory. They
can be included in an application program to check for fault-related conditions. The following system fault contacts are of special interest for a system with a FIP Bus Controller:A PLC system includes one Bus Controller. During CPU configuration, the system status
fault LOS_IOC has been designated a diagnostic (rather than fatal) fault. LOS_IOC represents loss of the Bus Controller; if this occurs, the Loss of IOC fault will be placed in the
I/O Fault Table. In this example, the application program also monitors the LOS_IOC
reference. If this reference is set, the contact passes power flow to an output coil, which
energizes a warning light on an operator panel.Fault and No Fault contacts can be used to detect fault or lack of fault conditions on a
discrete (%I) or analog (%AI) reference.
A Fault contact [FAULT] will detect a fault in a discrete or analog input or output, or a
hardware component of the system. The contact passes power flow if the reference has
a fault.Fault and No Fault contacts are driven by consumption of validator information from the
input module. If the validator information cannot be consumed, for example, if a remote
device loses power or network connection, or data is unrefreshed or unprompt, the Fault
contacts will be set by the FIP Bus Controller. If no validator information is configured
for consumption, the Fault contact will never be set.
