GM8802F-2 Field Mounting Transmitter
GM8802-F2110101
11
5.1.2 Configuring parameters
Please dial dip switch
D6 from 0
(
normal
)
to
1
(
defining
)
to configure parameters as left drawing.
Note
:
User need restart power after dip switch D6 changed.
After that, user can define parameters, such as baud rate, data format, communication
protocols and so on
;
when finished, user need dial dip switch
D6
to 0
(
normal
)
and restart
power, so
GM8802F-2
begin to communicate data with host computer by update parameters.
Define parameters as following fixed protocol:
Data format
:
7bits
,
1 bit stop
,
Even
(
7-E-1
)
Baud rate
:
38400
Code
:
ASCII
Command
:
STX
Address U S
E
T DATA1 DATA2 DATA3 DATA4 CRC CR
LF
Response:
STX
Address U S
E
T
O
K
CRC CR
LF
Here:
STX
—— 1bit
,
start character
02H
Address
—— 2bit
,
range from
01~16
(
30H 31H~31H 36H
)
U
—— 1bit
,
55H
S
—— 1 bit
,
53H
E
—— 1 bit
,
45H
T
—— 1 bit
,
54H
DATA1 —— 1 bit
,
baud rate
:
30H
:
9600
;
31H
:
19200H
;
32H
:
38400
;
33H
:
57600
DATA2 —— 1 bit
,
communication mode
:
30H
:
MODBUS RTU
;
31H:MODBUS ASCI
;
32H
:
GM-SP1
DATA3 —— 1 bit
,
data format
Data format table
:
Communication mode
DATA3
Data format
MODBUS-RTU
30H
8-E-1
31H
8-O-1
32H
8-N-1
33H
8-N-2
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