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2-2
2.1 How to Read Instruction Tables
2.1 How to Read Instruction Tables
Instruction tables in Section 2.2 have the following form:
Description
Classifies instructions by application.
Indicates the instructions used in a program.
Indicates the arguments of the instruction.
, : Source............. Stores data before operation.
, : Destination ...... Indicates the destination of data after operation.
n, n1: ........................ Specifies the number of devices and the number of transfers.
: ............................. Specifies the network number.
: ............................. Specifies the start I/O number of a module.
Indicates the processing details of each instruction.
Details of executing condition of each instruction are as follows:
Indicates the execution target module of each instruction.
For details of the icons, refer to Chapter 4.
Indicates the pages on which the instructions are explained.
Symbol Executing condition
Indicates an 'executed while ON' type instruction that is executed only while the precondition is ON. When
the precondition is OFF, the instruction is not executed and does not perform processing.
Indicates an 'executed once at ON' type instruction that is executed only at the rising pulse (OFF ON) of
the precondition of the instruction. The instruction is not executed afterwards even when the condition is ON
and thus does not perform processing.
Classification Instruction name Argument Processing details
Executing
condition
Applicable
module
Page
On-demand
function
transmission
G_ONDEMAND
, , ,
Sends data using the on-demand
function of MC protocol.
5-64
GP_ONDEMAND
, , ,
Nonprocedural
protocol
communication
G_OUTPUT
, , ,
Sends the specified number of data.
5-68
GP_OUTPUT
, , ,
G_INPUT
, , ,
Reads the received data.
5-71
s1
s2
d
Serial
s1
s2
d
s1
s2
d
Serial
s1
s2
d
s
d1
d2
s
s1
d
d1
Jn
*