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MELSEC-F
WHEN COMMUNICATING DATA USING THE MC PROTOCOL9
9 - 9
NOTE
The following example shows the designation of the subheader to the monitoring
timer when communicating using MC protocol under the following conditions.
(Designated value)
(1) Format when communicating in binary code
(a) The order when sending a command (external device Ethernet module)
(b) The order when receiving a response (external device Ethernet module)
• Target station : FX
3U/FX3UC series to which Ethernet module is connected : FFH
• Function used : Device memory batch read (bit units) : 00H
• Monitoring timer value : 2500 ms : 000AH
Application data
00 FF 0A
H
00
H
64
H
00
H
00
H
00
H
20
H
4D
H
08
H
00
HHH
Header
(M)
(H)
(L)
(H)
(L)
(H)
(L)
Subheader
PC number
Monitoring
timer
Character field (command)
(Head device number) (Device name)
Number of
device points
(Local station)
(2500 ms)
(8 points)
(100)
80
H
00
H
10
H
10
H
01
H
10
H
M100(ON)
M107(OFF)
M101(OFF)
M106(ON)
M102(ON)
M105(ON)
M103(OFF)
M104(OFF)
Application data
Header
Subheader
Complete
code
Character field (response)
on/off status of the
designated device
(Normal
completion)