Panasonic Minas A4 Series - Page 275

273
[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.