Integration of a CMX 40 module with coupling function
A description of this resolution:
- The problems described can be remedied as follows:
To remedy the situation carry out a reset on the passive unit once integration is complete (remove/plug in the fuse). To load the local alphanumeric, balance the unit with the system structuring.
If the unit is to be operated without redundancy, carry out a reset of the unit after integration.
'Integration of a CMX 40 module with coupling function' resolves the following:
Two problems can occur:
When a redundant CMX 40 module with coupling function (couple CMX or pass-through CMX) is integrated, bad timing can result in the isolation of the passive module.
Integrating a unit with coupling function will start a reset of the RUPIs to initialize then for the marshalling of the time synchronization telegrams. As a result, the active unit is briefly displayed as being disturbed . As the redundancy partner cannot become active because the configuration does not yet exist, all the RUPIs are reset and the module isolates itself. This is a desired effect when a redundancy pair is operating, so that other modules recognize that a pair has failed.
When the error occurs, the green ‘Active’ LED and the red ‘TS’ LED on the passive module flash. The SES displays: „Data path built-up error“.
When a CMX 40 with coupling function is integrated, this module does not evaluate the time synchronization telegrams. The unit to be integrated is entered in the system database (SYS_DB) of the SES with redundancy although there is only one module present.
The intended redundancy does not (yet) exist hardware based and only the main unit is integrated. As the redundancy pair could not be completely integrated, there is no reset of the RUPIs.Without the reset of the RUPIs the time synchronization telegrams are not evaluated by the L-Bus and/or the SA-Bus with the result that the time synchronization of the system is incomplete.