LSIS XGL-EFMT User Manual

Chapter 8 Dedicated Protocol Communication
8-5
8.2. Execution of Instructions
8.2.1 Read Separated Direct Variable
(1) Introduction
This function is used to directly specify the device memory address and the data type to read. Up to
16 separate device memory areas can be read at a time
(2) Request format (PC -> PLC)
■ Read Request of Individual Variable (MMI  PLC)
Item
Size(byte)
Description
Instruction
2
h0054 : Read Request
Data type
2
Refer to Data Type table(X,B,W,D,L)
Reserved area
2
h0000 : Don’t Care.
Number of blocks
2
Number of memory address to read; up to 16
Variable length
2
The number of characters in the Direct variable; Max. 16
Direct variable
Length of
variable name
Direct variable only available
...
...
(Repeatedly as many as the number of blocks /up to 16)
Variable length
2
The number of characters in the Direct variable; up to 16 characters.
Direct variable
Length of
variable name
Direct variable only available
Format
name
Header Instruction
Data
type
Reserved
area
Number
of blocks
Variable
length
Direct
variable
...
Code (Ex.)
...
h0054
h0002
h0000
h0001
h0006
%MW100
1 block (up to 16 blocks setting available repeatedly)
1) Number of blocks
Used to specify the number of blocks composed of ‘[Variable Length][Variable]’ in the
request format up to 16 blocks. Accordingly, the value of [Number of Blocks] shall be h0001
~ h0010.
2) Variable length
It means the number of characters of the variable name which is available up to 16 characters,
whose range is h01 ~ h10.

LSIS XGL-EFMT Specifications

General

Manufacturer	LSIS
Model	XGL-EFMT
Category	Controller
Series	XGL
Input Voltage	24VDC
Interface	Ethernet
Protocol	Ethernet