NI PXI-4462 oscilloscope

This warning always refers to the last STEP line to have been entered. It does not influence the compilation and always disappears once the next line is entered. Newly defined STEP M programs in AS 220 mode (no data field presetting in line 2) reject command lines regarding data field presetting (“GB,...;“ “GM,...;” “GT,...;”) and issue F 540. These command lines cannot be used for changing over to AS 230 mode (or vice versa) at a later point in time. STEP M programs which have been defined in older versions (< E210) are executed without any changes and may be programmed in the old fashion. In particular, the compiler mode can be changed within the program. The mode currently valid for the last command line to have been entered is displayed in the top–right hand corner on the screen, and may change from line to line.

STEP M Instruction Set

STEP M programs can only be executed in AS 230 mode with minimum computing time, and are particulary suitable for processing GB, GM or GT data fields. A TML program with preceding SET instruction is better for reading or writing parameters from other blocks.The STEP M instructions possible are listed in the table below, which is structured according to the following criteria – General configuration instructions/page change – Hardware inputs/outputs – Flags – Timers – General function block outputs – STEP block outputs – Parentheses – Negation/No operation – Branch/subroutine call

Meaning for AS 230 operand range

Direct pointer setting. Any GB data block can be addressed, including “GB.1 to GB.8”. Subsequent instructions refer to the data block specified. Indirect pointer setting. The GB data block specified in the VS/KS data record is addressed. Subsequent instructions refer to the data block specified.Direct pointer setting. Any GM data block can be addressed, including “GM.1 to GM.8”. Subsequent instructions for interconnection of flags refer to the data block specified. Indirect pointer setting. The GM data block specified in the VS/KS data record is addressed. Subsequent instructions for interconnection of flags refer to the data block specified here.

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