NI PXI-6533 Matrix switch module

The signal “ein” is stored in the data block GB.3. Inside this block it has signal no. 7. The result “erg” is provided at the block output for further interconnection. a) Configuration instruction (function block VN) D,VN,A5
Function block type VN, name A5 is created. Q,1,GB,3,7; The connection to “ein” is established The result is provided at output no. 1 of the function block VN.A5. b) STEP M instruction (for function block VS.A9) GB,3; UNE,7; Inverting the signal “ein” = B,1; The connection to “ein” is established The result is provided at output no. 1 of the function block VN.A5 The result is stored in the block type XYZ, name A11, output/ data element A1. Data (block inputs/outputs) and logic functions are combined and the result assigned to a block output in all three instruction languages.

Result assignments are performed by:

TML lines are used to give instructions for logic data operations (block inputs/outputs). The operation type is specified by a TML operator (e.g. +, –, AND, = :,...) or a TML instruction (e.g. IF ... THEN ... ELSE ...). The data has already been provided (exception: auxiliary cells and constants; cf. Chapter 5.7.3). A TML line, as input or output, part of a block which has already been defined and clearly specified by its (block) address, i.e. block type and block name number. Each data element has an element name and/or number inside the block (data record).

Call by the System

 A block is the higher–order unit of all instructions (i.e. for concatenated/nested instructions containing TML lines). The following different categories of TML blocks exist (cf. Chapter 5.4): – Function algorithm – Check algorithm – Initialization blocks – Subroutine blocks (see Chap. 5.7.2.2) – Internal subroutines (see Chap. 5.7.2.2) While the individual algorithms are assigned to a specific function block type, subroutines and initialization blocks are independent of a function block type. Their names consist of four alphanumeric characters, starting with a letter.

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