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[Supplement]
Supplement
RS485 Communication Protocol
Refer to the instruction manual of the host for the transmission/reception method of command.
Following shows the communication example of the driver to RSW (ID).
Command from the host will be transmitted to the desired driver based on RS485 transmission protocol.
For details of communication, refer to P.278, "Communication".
Reception of
absolute data
(15 characters)
N
N
N
N
Y
Y
Y
Y
Data of *1 and *2 are determined by the
setup of RSW (ID) of the front panel.
Check sum becomes OK'ed when the
lower 8-bit of the sum of the received
absolute data (15 characters) is 0.
RSW(ID)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Data of *1
81h
82h
83h
84h
85h
86h
87h
88h
89h
8Ah
8Bh
8Ch
8Dh
8Eh
8Fh
Data of *2
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
Data of *3
2Dh
2Ch
2Bh
2Ah
29h
28h
27h
26h
25h
24h
23h
22h
21h
20h
1Fh
not usable with RS485 communication
Host requests
for absolute
data to driver
Host receives
absolute data
from driver
Transmission starts
transmission finishes
06h transmission 15h transmission
Check sum
OK'ed reception
01h transmission
00h transmission
81h transmission
05h transmission
2Dh transmission
*
2
*
1
*
1
*
3
D2h transmission
80h reception
05h reception
80h transmission
04h transmission
81h reception
04h reception
06h reception
• Allow 500ms or longer interval for axis switching when you want to capture multiple
axes data.
• It is recommended for you to repeat the above communication more than 2 times to
confirm the absolute data coincide, in order to avoid mis-operation due to unexpected
noise.