Fuji Electric ZKM, Руководство по обслуживанию

Страница: 12 / 37

10
INZ-TN5A0506-E
5.4 Function Code
According to MODBUS protocol, register numbers are assigned by function codes. Each function code acts on
specific register number.
This correspondence is shown in Table 5-2, and the message length by function is shown in Table 5-3.
Table 5-2 Correspondence between function codes and objective address
Function Code Register No.
No. Function Remedy No. Contents
03
H
reading (continuance) Holding register 4xxxx Reading/writing Word data
04
H
reading (continuance) Input register 3xxxx Reading Word data
06
H
Writing Holding register 4xxxx Reading/writing Word data
10
H
Writing (continuance) Holding register 4xxxx Reading/writing Word data
Table 5-3 Function code and message length
[UNIT: byte]
Command
message
Response
message
Function Code Contents
Designated
data
Mini. Max. Mini. Max.
03
H
Read word data 64 words 8 8 7 133
04
H
Read word (Read only) 64 words 8 8 7 133
06
H
Write word data 1 word 8 8 8 8
10
H
Write continuous word data 64 words 11 137 8 8