E - VAE ProSys sro

6.6 Number of fault words (only MT-45, MT-91, MT-121)Here the maximum number of fault words resp. acknowledge words to be managed can be defined. The upper limitis 32 words.In SPSPlus WIN, the number of fault words results from the Bit number of the Fault message field sheet inthe Station parameters dialog.Example: 15 fault words = 15 x 16 bits = 240 bits, i.e. in the Bit number field 240 must be entered.6.7 Acknowledgement (only MT-45, MT-91, MT-121)Starting from this address the acknowledge field for the faults in the PLC is represented. The length of the fieldcorresponds to the defined "Number of fault words".Function:If a dynamic fault is acknowledged by the operator then the corresponding bit is set in the acknowledgement."PLC address acknowledgement"/ "Acknowledge field"+00 Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Meaning15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0x x x x x x x x x x x x x x x 1 Acknowl. Fault 0. . . . . . . . . . . . . . . . ...1 x x x x x x x x x x x x x x x Acknowl. Fault 15...+31 x x x x x x x x x x x x x x x 1 Acknowl. Fault 496. . . . . . . . . . . . . . . . ...1 x x x x x x x x x x x x x x x Acknowl. Fault 511Operation:Fault listdynamic faultAcknowledgement(ESC) byoperatorFault bit field1 1AcknowledgementThe acknowledgement has always the size of the fault bit field.Way of function:If the fault text of fault 1 is a dynamic fault text, and it was acknowledged with then at "Address acknowledgement"+ 0 bit 0 is setNo acknowledgement can be done if no address acknowledgement is declared!After restart or communication error, the whole acknowledgement is deleted!a bit in the fault bit field is set to 0 then the corresponding bit in the acknowledgement is set to 0.E114Process display and control/ Device Manual/ Issue: 07.01