LSIS XGL-EFMTB User Manual

Chapter 8 Dedicated Communication
8-12
8.2.4 Write Continuous Direct Variable
(1) Introduction
This function is used to write the data on the directly defined PLC device memory continuously
as many as specified from the address specified. However, byte type of variables is only available.
(2) Request format
■ Write Request of Continuous Variable (MMI  PLC)
Item
Size(byte)
Description
Instruction
2
h0058 : Write Request
Data type
2
h0014 : Block Type
Reserved area
2
h0000 : Don’t Care.
Number of blocks
2
It is fixed with h0001 for Continuous write.
Variable length
2
The number of characters in the variable field; Max. 16
Variable Variable
length
Variable name; Byte type of direct variables only available.
(In other words, types of %MB / %PB / %DB/… available:
supporting devices: P,N,L,K,T,C,D,N )
It displays block’s start address. (Ex. %MB0, %PB0)
Data
Data size
Data to write, up to 1400 bytes
Format
name
Header Instruction
Data
type
Reserved
area
Number
of
blocks
Variable
length
Variable
Number
of data
Data
Code
(Ex.)
... h0058 h0014 h0000 h0001 h0006
%MB1
00
h0002 h1234
1) Number of data
It means the number of data in byte unit. (up to 1,400(h0578) bytes available).
2) Number of blocks
h0001 only can be used for Number of blocks field .
3) Variable length
It is the number of characters of the variable which is available up to 16 characters, whose
range is h01 ~ h10.
4) Variable
It stands for variable’s address to write actually. It shall be ASCII value within 16 characters.
Others than figure, capital/small letter, ‘%’ and ’.’ are not allowed for the variable name.
Based on the PLC type, types of variables available to write continuously are described in
[Table 10.3.2].
Notes
(1) Refer to applicable technical materials for respective device areas setting of XGT series.

LSIS XGL-EFMTB Specifications

General

Model	XGL-EFMTB
Form Factor	Low Profile
Manufacturer	LSI
Interface	PCIe
Controller Type	SAS/SATA
Ports	8 Internal
RAID Levels	0, 1, 10
Data Transfer Rate	6Gb/s per port