USR IOT USR-GPRS232-730 - RFC2217 Similar Function; Indicator Status Meanings

USR-GPRS232-730 User Manual h.usriot.com
Jinan USR IOT Technology Limited / 45 www.usriot.com
16
3.6.2. Similar RFC2217
This function is similar to RFC2217. Customer can change the parameters of serial port dynamically via
network. This modification is temporary, when module restarts, the parameters changed will return back to
previous values.
Definition of similar RFC2217
This protocol contains 8 bytes, details as the following form
Interpretation of bits parameters
Bits
Interpretation
Value
Description
1:0
Data bits
00
5
01
6
10
7
11
8
2
Stop bits
0
1
1
2
3
Enable/disable parity
0
disable
1
enable
5:4
Parity type
00
ODD
01
EVEN
10
Mark
7:6
No defined
00
write 0
3.7. Indicator Status
Indicator status meaning
POWER
“on” means normal power supply, “off” means power supply failure
GPRS
“on” means attached, “off” means attach failure
Item
Head
Baud Rate
Bits Parameters
Check Sum
bytes
3
3
1
1
interpretation
Fixed data
MSB
Refer to the following
table
Sum of Baud Rate
and Bits Parameters
Exmaple1
(115200,N,8,1)
55 AA 55
01 C2 00
83
46
Exmaple2
(9600,N,8,1)
55 AA 55
00 25 80
83
28