ABB PFEL111 controller

Outgoing Message Frames The message frames from the AKS, BKS, MKS or ZKS transmitter blocks are generated by the blocks and transferred to the N8/N–AS interface module for transmission. This means that the processor load occurs on the respective online levels. The receiver ID is entered in the address block for the N8/N–AS interface module (not shown here).

Alarm Message Frames 

Alarm message frames can be received by other subsystems (ANM,BA,TA,2;) and be transmitted to subsystems which have logged on. Message frames from external subsystems are entered in a print buffer on the bus processing level (PU7). The picture processing level (IU14/ZYK4) then performs printing. The following message frame descriptions show incoming message frames; the first three words of outgoing message frames are contained in the N8/N–AS interface module address block. The message frame log output can be selected by entering GE. A group message (S 399) is issued on the monitor.

N8/N–AS channel monitoring 

The AS 23x is able to detect a blockage of the N–8 channel in online mode after the link to the OS has been set up. The blockage, which can occur after an invalid message frame has been transferred by a computer, for example, is automatically removed, and a corresponding MEL message frame is transmitted to the OS for logging purposes. The message, which is used for fault location, has the following structure:Bus/device no. of transmitter

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