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參數(shù)資料
| 型號： | PS2000ACQ |
| 英文描述： | A Network Communication Controller Designed to Connect Any MCU Application System To A Gateway(單片網(wǎng)絡(luò)通信控制器,用于控制MCU和網(wǎng)絡(luò)服務(wù)器之間的信息交換) |
| 中文描述： | 通信控制器的網(wǎng)絡(luò)連接任何設(shè)計單片機(jī)應(yīng)用系統(tǒng)到一個網(wǎng)關(guān)（單片網(wǎng)絡(luò)通信控制器，用于控制微控制器和網(wǎng)絡(luò)服務(wù)器之間的信息交換） |
| 文件頁數(shù)： | 37/54頁 |
| 文件大小： | 594K |
| 代理商： | PS2000ACQ |
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PS2000A Datasheet
Doc. Number:
TECINHD001
Version 1.0
3/1/2002
P&S DataCom Corporation
33
Table 25
Byte
Package content
Description
ESC (0x1b)
SOH (0x01)
ESC (0x1b)
4
SOH (0x01)
Package header
4
Server ID Code
Server identification code
8
Device ID code
Device identification code
1
00h
State information byte
1
DISV (10h)
Discover command
1
00h
Null
1
00h
Null
ESC (0x1b)
ETB (0x17)
Packet trailer
4
CRC
CRC value, 2 bytes (MSB first)
N
OTE
:
T
O COMMUNICATE WITH THE
PS2000A,
THE NETWORK SERVER AND THE
DPTGT
CAN USE THE
DISV
COMMAND TO REGISTER THE DEVICE AND GET THE
DEVICE
ID.
When the PS2000A receives the command, it should be estimated whether the network server
accesses it. If not, the PS2000A will be considered as a non-registered device, it will respond
to the command.
The PS2000A responds to the DISV command different than other commands. The PS2000A
needs to have a delay time, which ranges form 0 to 500ms.
In the delay time, the PS2000A listens whether other communication controllers of the
network respond to the command or not. If not, the delay is over and the PS2000A sends the
data package to the network server. If so, the PS2000A will not respond to the command,
unless the network server sends the DISV command again.
If multiple non-registered PS2000As connects to the network at the same time, the data
collision can be minimized with the help of the function.
After the PS2000A responds to the DISV command of the network server successfully, it is
not considered that the PS2000A has been registered in the network server, unless the
network server has accessed the PS2000A by the use of the correct device ID code. If the
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