NI PXI-4110 Analog output module

The system automatically assigns the next free number of the corresponding type if an internal block number has not been specified.Any attempt to enter an internal block number that lies outside this range is rejected and the error message F 515 is issued. Error message F 503 is issued if an existing internal block number is specified again.Codeword for the definition end of blocks (programs) after the instruction ”D,...;” and the TML, STEP M or BILD / PROTOKOLL instructions.Before block correction is started, it must be ensured that the block will not be activated during this procedure. Corrections should therefore always be performed in “STO;” status unless the block has been removed from processing.

Formatting the output log of a block (program) 

  Only permitted in authorization level 3 of the PBT. After an instruction has been inserted into a program page, the remainder of this instruction is written to a new page. If instructions are inserted repeatedly, the number of program pages is considerably larger than is actually necessary. The instruction “FO;” compresses an output log of a program to full log pages, i.e. PAGE commands are eliminated The ”AE;” instruction only initiates a compilation run with programming error messages if the selected program has been modified. The time–consuming compilation run is not performed and a message is output if no modifications have been carried out or in the case of a printer output.

Binary signal input/output blocks

 such as the drivers BEI, BAU, BRA, store their binary signals in GB data blocks (or GM block) or retrieve them from these blocks. Although the GB (GM) data blocks, which represent a central (global) binary process image, can be accessed by all blocks via interconnection, they can also be very easily accessed using STEP M instructions. STEP M instructions can be used to set up sequence and interlocking controls. STEP M instructions are entered in a new block of the “STEP” type and obtain a name or a number (1 to 4 alphanumeric characters, starting with a letter).

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