HVC-02B 3HNA024966-00103 Pulse logic module

   Selecting the Station Address The station address of AC 800M controller and the CI869 module is selected in the hardware tree in the Control Builder. See the Control Builder Online Help for details. The station address has no relation to the order of the stations along the bus. They represent the physical address which is used to refer the specific stations.It is not possible to extend a single media bus without disconnecting some nodes. The effect of doing this is that the bus communication is disturbed during the procedure of extending the bus. In installations with redundant cable, however, it is possible to extend the bus cables one by one. When one bus cable is unusable, the communication interfaces just use the other cable.

Changing the logical Bus length 

  The bus has to be restarted in order to change the logical bus length. The following procedure describe how the logical length can be changed. 1. Reset IMPL on all stations on the bus. 2. Change the bus length on all considered stations on the bus. 3. Set IMPL on the stations one by one.This chapter describes the faults that might occur in an Advant Fieldbus 100 network, how to diagnose and trace them, and what can be done to repair them. All faults are detected and reported by the communication interface itself. They may concern the module as a whole, or they may concern the configured DSPs only. For each of the errors that may be reported by the communication interface, it is described what the error means, what might have caused the error, and how to repair. Errors concerning the configured DSPs are described in DataSet Peripheral Errors on page 223. Only errors of the type “no operation” concerning the module as a whole can cause any of the communication interfaces to stop operation completely and to light its red “FAULT” LED.

Not in Operation

   Fatal module errors cause the communication interface to restart and to remain in error state thereafter. The individual error indications are described below. Most of the errors indicate fatal hardware errors, requiring that the communication interface must be replaced. The reasons why the CI520/CI522 is not in operation are: • The CI520/CI522 data base element terminals IMPL/SERVICE are reset. • The module is out of order. • Several stations are using the same station number. • The bus is not terminated correctly, for example termination is missing or the cable is broken.• The CI520 (only capable of running on a bus configured for 2000m) is connected to a bus that is configured for 8500 meters or 15000 meters.