Fuji Electric PXG-9 Communication Instruction Manual page 33

Example of Transmitting a Message (For Engineering Unit)
The message is composed as follows when reading the PV input lower limit and PV input upper limit from station number 2.
• PV Lower Limit Relative Address: 03F9H
Command Message (bytes)
Station No.
Function Code
No. to Start Reading
(Relative Address)
No. of Words to Read
CRC Data
■ Meaning of Read Data
PV Input Lower Limit 00 00H = 0
PV Input Upper Limit 01 90H = 400
If Decimal Point Position = 0, then the PV input upper limit and lower limit are as follows.
PV Lower Limit = 0°C
PV Upper Limit = 400°C
For more about the internal calculation value, engineering unit,
Refer to
and decimal point see
"Chapter 7, Address Map and Data Configuration" (p. 39).
Master
02H
03H
Upper number 03H
Lower number F9H
Upper number 00H
Lower number 02H
Upper number 14H
Lower number 4DH
Slave
Response Message (bytes)
Station No.
Function Code
No. of Bytes to Read
First Word Data
Contents
Next Word
Data Contents
CRC Data
– 31 –
02H
03H
04H
Upper number 00H
Lower number 00H
Upper number 01H
Lower number 90H
Upper number C8H
Lower number CFH
Chapter
6