Specifications

7. Application Instructions
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7-47
For example: when the address of the drive is set as 01H, read 2 data
contents that exist successively within the register, as shown follows: the
address of the start register is 2102H.
Inquiry: Response:
Address 01 H Address 01 H
Function 03 H Function 03 H
21 HStart data address
02 H
Number of data
(count by byte)
04 H
00 H 17 HNumber of data
(count by word)
02 H
Content of data
address 8102H
70 H
CRC CHK Low 6F H 00 H
CRC CHK High F7 H
Content of data
address 8103H
00 H
CRC CHK Low FE H
CRC CHK High 5C H
1. Timing chart of RS-485 communication program flag:
Timing chart:
write delivery data in
advanc
e
SET M1122
delivery
request
pulse
X10
RS D100 K2 D120 K8
receive
compeleted
handling receive data
receive compeleted
and reset flag
M1123
RST M1123
M1002
MOV
M1120
D1129
Setting communication
protocol 9600, 7, E, 1
Communication
protocol latched
setting communication time
out 100ms
H86 D1120
SET
K100MOV
X0