Emerson PaCSystems VersaMax Series, Руководство пользователя

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User Manual Chapter 8
GFK-1503F Jan 2020
Elements of an Application Program 89
→→
dint
Truncate to Double
Precision INT (from
REAL) Truncates to a 32-bit signed number. The range is -
2,147,483,648 to +2,147,483,647.
8.4.10 Control Functions
call Call Causes a program execution to go to a specified subroutine block.
do io Do I/O Services a specified range of inputs or outputs immediately (all
inputs or outputs on a module will be serviced if any addresses on
that module are included in the function
– partial I/O module
updates are not performed
pidind
Independent
PID Algorithm
Selects the non-interacting independent PID algorithm.
pidisa ISA PID
Algorithm Selects the ISA PID algorithm.
end Temporary End
of Logic The program executes from the first rung to the last rung or the
END instruction, whichever is encountered first. This instruction is
useful for debugging purposes.
commnt Comment A rung explanation.
svcreq Service
Request A special PLC service function.
mcr Master Control
Relay Starts a master control relay range. An MCR causes all rungs
between the MCR and its subsequent ENDMCR to be executed with
no power flow. Up to 8 MCRs can be nested.
endmcr End Master
Control Relay Ends a master control relay range.
jump Jump Jumps to a specified location indicated by a LABEL in the logic.
label Label The target location of a JUMP instruction. Multiple Jump
instructions can reference the same label.
drumseq Drum
Sequencer (future) Operates like a mechanical drum sequencer, selecting a
16- bit output pattern from an array of stored patterns, and sending
it to a set of outputs.