MTL 8715-CA-BI總線接口模塊底座
熱交換CI854A支持熱交換。它可以在線更換，不會(huì)對(duì)連接到CEX總線的其他單元造成任何干擾。在熱移除和隨后的插入之后，該單元將自動(dòng)配置。在冗余配置中，可以在不干擾主單元的情況下更換備用單元。這包括如果設(shè)備出現(xiàn)故障，可以在線更換。為了支持熱交換，不需要配置。運(yùn)行中的熱配置（HCIR）在運(yùn)行中進(jìn)行熱配置時(shí)，可以在線配置從屬設(shè)備，而無(wú)需初始化PROFIBUS通信。當(dāng)循環(huán)通信保持活動(dòng)時(shí)，新的或更改的配置被下載到從設(shè)備。如果從屬設(shè)備支持HCIR，則可以在線添加或刪除I/O單元。在重新配置期間，CI854/CI854A和從機(jī)之間的循環(huán)數(shù)據(jù)傳輸停止。CI854/CI854A保持輸入值，從機(jī)保持輸出值。在完成重新配置之后，循環(huán)數(shù)據(jù)傳輸將基于新的配置數(shù)據(jù)進(jìn)行。
The reconfiguration is monitored by the CI854/CI854A with the HCIR timeout. By
starting the reconfiguration the HCIR timeout is sent via a SetPrm telegram to the
slave. This indicates the slave to increase the watchdog timeout to the value defined
by the HCIR timeout until the reconfiguration is finished. The timeout for HCIR is
defined on CI854/CI854A by:A configuration via HCIR is only possible for slaves that have implemented this
feature like S800 I/O and S900 I/O. To activate the HCIR sequence a special entry
in the hardware definition file is necessary. For slaves imported via the Device
Import Wizard this parameter is automatically set if the setting is available in the
GSD file.Hardware Library
To configure hardware types for PROFIBUS master and slave units hardware
libraries are used. How to handle hardware libraries, refer System 800xA Control AC
800M Configuration
