20-4
PPC Manual Revision 1
Chapter 20: Modbus Communication
20.1.2 Configuration of Messages
Element
Message start
mark
Address No
(ADR)
Function code Data Error check
Message end
mark
1 1
2
1 2 2
2 2
Condition
Content of D
register n
Content of D
register n+1
Content of D
register n+2
Content of D
register n+3
Display data
123
“”“”
“1388”“”
Target setpoint: 50.00
Message data to be sent from the host computer: 1388 (hexadecimal value of 5000)
Message data: 1388
PPC5 side
Response data from
PPC5
: 1388
* The PPC5 determines the decimal point position for “5000” by the
decimal point position parameter setting (in this case, P.DP = 2).
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