Omron NX-SID800 User Manual

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7 Programming
NX-series Safety Control Unit User’s Manual (Z930)
7-1 POUs (Program Organization Units)
7
7-1-5 Details on Function Blocks
• Function Block Settings
When you create an instance of a function block definition, make the following settings.
 Function Block Name or Instruction Name
This is the name of the user-defined function block or the instruction.
 Instance Name
You give an instance name to a function block instance in a program to enable managing it. You
specify an instance name when you call a function block definition from a program or another func-
tion block.
 Algorithm
Algorithms are programmed in the FBD language. You cannot use the ladder diagram language
(LD) or the structured text language (ST). You can use any instructions or user-defined function
blocks in the algorithm.
 Local Variable Table
The local variable table contains the definitions for input variables, output variables, and internal
variables.
 Parameters
• Input Parameters to Input Variables
An input parameter passes a value to an input variable in a function block when function block
execution begins. An input parameter can be either a variable or a constant.
• Output Parameters from Output Variables
An output parameter receives a value from an output variable in a function block when function
block execution is completed. A variable is given as the parameter.
Additional Information
You can omit input and output parameters. Refer to the NX-series Safety Control Unit Instruc-
tions Reference Manual (Cat. No. Z931) for details on the operation.
Settings of a function block instance in a program
Function block name
Instance name
Input variables
Output variables
Internal variables
Output parameters
Input parameters
Created in the function definitions.
Algorithm
Local variable table
• Programming in the FBD language.
• Any instructions and user-defined
function blocks can be used.

Omron NX-SID800 Specifications

General

Brand	Omron
Model	NX-SID800
Category	Controller
Language	English