CSE-H25 User
’
s Manual Ver. 1.2
Sollae Systems Co., Ltd.
- 34 -
http://www.sollae.co.kr
5.5
U2S
U2S is a mode that performs UDP communication.
In UDP communication, data is sent in block units. Therefore, data that comes through
CSE-H25‟s serial port must be classified in block units to send it elsewhere. The block unit
classification process is performed as the following.
When the amount of received data via CSE-H25 serial port is as same as previously
designated data Event Byte, [Event Byte], or the duration of the data exceeds [Data Frame],
the incoming data will be recognized as one block. This block will be sent to UDP.
[Timeout] is in 10ms.
Since UDP communication does not involve establishing connection, N: M
communication may be performed using broadcast. Therefore, it can be conveniently in
changing RS 485 multi drop type network to Ethernet.
Serial Device
ezTCP
DATA
“
ABC
”
(UDP)
5ms
<U2S Transmission sequence
–
Byte Count:3, Guard Time: 1>
Remote Host
“
AB
”
“
C
”
“
A
”
“
BC
”
10ms
DATA
“
A
”
(UDP)
“
A
”
9ms
DATA
“
BCA
”
(UDP)
In addition, if the [Peer Address] and [Peer Port] are set to 0, U2S echo functions will be
applied. This option allows it to send UDP packets according to the source IP address in
the last packet which is received. By using this, CSE-H25 can send multiple hosts one by
one.
