ABB PETL101A Horizontal measuring sensor

Diagnostic Routines in Blocks The following section deals with the hardware–related blocks. These are: – the driver blocks – the MEL/PKM, PKF block – the PROT and BILD blocks – the MEL block – the TELEPERM ME module blocks The diagnostic routines give the user a detailed explanation of the cause for a specific fault indication.The binary routing module can also be used for module number 61 (group interrupt module) and the interrupt–generating dynamic library input modules. Only channel number 2 may then be parameterized for a fuse tripping test. (KNR = 0 clears the interrupts and this causes faults) (in this case, KNR is n o t checked in the check block).

Increment converter module

– No reaction to a fault. The functions in cycle 2 and cycle 3 have been defined (a new value is accepted during each execution of cycles 1, 4, 5). – The driver does not communicate directly with the field devices.Output via device. Device message according to MEL may be issued: paper end, missing loop current, line interrupted, no device.Check if the two operator positions are available: check for display inhibit (NEMO)

The MEL block issues a 1–line message to the – process bus – VDU message line – printer/back–up printer

An output via the back–up devices is activated 

by ERDR = / 0. The printout of a message line is first attempted on the DRNR printer. It is redirected to the back–up printer if the printer interface or the printer are not operational (paper end, lid open, no connection between printer and interface). The output on the back–up device will not be checked for correctness. Error messages can only be generated if at least one interface module has been installed. Error messages are automatically detected by the system and issued in the VDU, the system fault logging printer (configurable via ”GE,drno,logtype;”) and a flag in the data block (GB.ORPA.GB4–7.).

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