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Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

DEIF SCM-1 ship controller

Setting the CI520 Operational When the CI520 is started and configured, it must be set operational in order to enable communication on the Advant Fieldbus 100, and to participate in the sharing of the bus master responsibilities. This is done automatically by the Advant Controller 400 Series. If the CI520 is the first communication interface to become operational, it immediately assumes the bus master responsibilities. If another communication interface becomes bus master before the CI520, the CI520 will detect the presence of a bus master on the Advant Fieldbus 100 and work to get synchronized. If a CI520 is commanded operational on a bus where other communication interfaces already shares the bus master responsibilities, the CI520 sends a message to the current master to notify its presence. The current bus master then sends the scan table to the CI520 while carrying out the bus master responsibilities. The CI520 adds its own CDPs to the scan table and then asks to become the current bus master. After receiving the bus mastership the new updated scan table is distributed to all other bus administrators. If a CI520 gets its configuration changed on-line due to changes in the database. The CI520 updates its own scan table and then asks to become bus master. When it has become bus master the scan table is distributed to all other bus administrators.

Communication Interface Functions 

After power on (or restart), the communication interface can only become operational if it is set operational by the station. Until it is operational, the communication interface does not provide any transmissions on the Advant Fieldbus 100 at all. Furthermore, it cannot share the bus master responsibilities, and it can not participate in the configuration algorithms of the active scan table. Communication interfaces defined as bus administrators participates in the bus master responsibilities. As the bus administrators supervises the traffic on the bus and have the possibility to take over the bus mastership if the current master falls out, it is preferable to define communication interfaces as bus administrators, when it is possible.

The status information of the own communication interface, CI520, is available with the DB element Advant Fieldbus 100. The status of the CI520 is given by the DIAG_I terminal in the Advant Fieldbus 100 DB element. The following status information is given on the DIAG_I terminal: OK CI520 is operating. IE Missing or faulty CI520. PE Process error, for example cable break.