abc 2000 Series User Manual page 178

Data high-order position
low-order position
Data
low-order position of CRC CHK
high-order
Set PD.05 to 1 :
The number of bytes
highmorder position of F002H
Data
Data low-order posi
Data
Data low-order position of F003H
low-order position
The command code:06H write a word{Word)For example,write
OOO(BBSH)to slave machine.
Address 05H inverter's FOOAH address.
The host command information
high-order
low-order position
low-order position cf information
low-order position of CRC
In response to information from the slave machine
position
low-order
high-order
position of information content
low-order position
low-order f'llrn'l i tion cf CRC CHK
high-order position of CRC CHK
Check way--{;RC Check way:CRC(Cyclical Redundancy Check)
use RTU frame format, The message includes error detection field
based on tho method of CRC .CRC domain test tho whole
of a message. CRC domain is two bytes.contains a 1 6-bit binary
values.it is calculated by the transmission equipment, added to the
F003H
of
F003H
of
position of CRC CHK
ADR
CMD
n
ti o F002H
of
F003H
of
CRC CHK
of
ADR
CMD
position of data address
data address
of
of information
of CRC CHK
ADR
CMD
position
of data address
address
of data
information cont.ant
of
B Communication Protocol
Wait
Wait
content
content
HK
C
Walt to calculate the CRC
Wsit to calculate the CRC
·173·
OOH
0 1 H
the
CRC CHK
to calculate
values
01H
03H
04H
OOH
OOH
OOH
01H
to
calculate the CRC CHK
values
05H
OSH
FOH
Ol\H
OBH
BBH
!
CHKva: as
u
02H
OOH
FOH
OAH
13H
88H
CHK values
content