LSIS XGL-EFMT - Page 153

Chapter 8 Dedicated Protocol Communication
8-13
(3) Response format (in case of PLC ACK response)
■ Write Response of Continuous Variable (PLC MMI)
Item
Size(byte)
Description
Instruction
2
h0059 : Write Response
Data type
2
h0014 : Block Type
Reserved area
2
h0000 : Don’t Care.
Error status
2
Normal if it is 0, abnormal if not 0.
Number of blocks
2
If Error State abnormal, the lower Byte is error code.
Error code
h0001: If Error State normal.
Format
name
Header Instruction Data type
Reserved
area
Error status
Number of
blocks
Code (Ex.)
...
h0059
h0014
h0000
h0000
h0001
1) Data type
Available data type is byte (%MB,%IB,%QB).
2) Number of data
It means the number of bytes (Hexadecimal).
(4) Response format (in case of PLC NAK response)
Format
name
Header Instruction
Data
type
Reserved
area
Error status
Error code
(Hex 1 Byte)
Code
(Ex.)
.... h0059 h0014 h0000 hFFFF h21
1) Error code
Error code is attached the type of error in 1 byte of Hexadecimal code.
Refer to ‘Error Codes Table’ for more details.