Panasonic minas a4 series Instruction Manual page 275

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).
Host requests
for absolute
data to driver
Host receives
absolute data
from driver
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".
• 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.
Transmission starts
81h transmission
*1
05h transmission
N
*1
81h reception
04h reception
Y
00h transmission
01h transmission
*2
D2h transmission
2Dh transmission
*3
N
06h reception
Y
N
80h reception
05h reception
Y
80h transmission
04h transmission
Reception of
absolute data
(15 characters)
N
Check sum
OK'ed reception
Y
06h transmission 15h transmission
transmission finishes
Data of *1 and *2 are determined by the
setup of RSW (ID) of the front panel.
RSW(ID) Data of *1 Data of *2
0 not usable with RS485 communication
1 81h
2 82h
3 83h
4 84h
5 85h
6 86h
7 87h
8 88h
9 89h
A 8Ah
B 8Bh
C 8Ch
D 8Dh
E 8Eh
F 8Fh
Check sum becomes OK'ed when the
lower 8-bit of the sum of the received
absolute data (15 characters) is 0.
[Supplement]
Data of *3
01h 2Dh
02h 2Ch
03h 2Bh
04h 2Ah
05h 29h
06h 28h
07h 27h
08h 26h
09h 25h
0Ah 24h
0Bh 23h
0Ch 22h
0Dh 21h
0Eh 20h
0Fh 1Fh
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