LSIS XGL-EFMTB - Page 147

Chapter 8 Dedicated Protocol Communication
8-7
1) Data Size
It means the number of bytes in Hexadecimal. This number is decided based on the
memory type (X,B,W,D,L) included in variable name of the computer request format.
2) Number of blocks
Used to specify the number of blocks composed of ‘[Number of Data][Data]’ in the request
format up to 16 blocks. Accordingly, the value of [Number of Blocks] shall be h0001 ~
h0010.
Classification
Available variables
Number of data (Byte)
Bit (X) %(P,M,L,K,F,T)X
1
(Lowest bit only effective)
Word (W)
%(P,M,L,K,F,T,C,D,S)W
2
[Table 8.2.2] Number of data based on variables
Notes
1) Number of data ‘H04’ means that 4 bytes of Hexadecimal data (Double Word) exists in the data.
2) If data type is Bit, the read data will be displayed in one byte (HEX). In other words, if BIT value
is 0, h00 will be displayed, and if the value is 1, h01 will be displayed.
4) Response format (For NAK Response)
Format
name
Header Instruction
Data
type
Reserved
area
Error status
Error code
(Hex 1 Byte)
Code (Ex.) ... h0055 h0002 h0000
hFFFF
(other than 0)
h21
Notes
(1) Error code displays the type of error in 1 byte of Hexadecimal.
Refer to ‘Error Codes Table’ for more details.