参数资料
型号: VK204-25-E
厂商: Matrix Orbital
文件页数: 24/47页
文件大小: 2507K
描述: VFD ALPHA/NUM DISPLAY 20X4
产品变化通告: VK204-25 Series Release 03/Mar/2010
12C Displays Change 11/Oct/2011
标准包装: 1
系列: VK204-25
外形L x W x H: 98.00mm x 61.00m x 24.40mm
可视范围: 70.80mm L x 20.90mm W
显示格式: 20 x 4
显示器类型: 字符
格式: 5 x 7 点
电源电压: 9 V ~ 15 V
字符尺寸: 4.70mm H x 2.40mm W
接口: 串行
工作温度: -40°C ~ 85°C
相关产品: VFD-GREEN-204-ND - LCD ACCY VFD FILTER 20X4 GREEN
VFD-RED-204-ND - LCD ACCY VFD FILTER 20X4 RED
VFD-GREY-204-ND - LCD ACCY VFD FILTER 20X4 GRAY
VFD-BLUE-204-ND - LCD ACCY VFD FILTER 20X4 BLUE
30
5.
Dallas One-Wire
5.1.
Search for a One-Wire
Device
Dec
Hex
254 200 2
FE C8 02
Sends a search query to each of the up to 32 devices on the one wire bus. Any connected device will respond with
an identification packet.
Response
14 bytes, identification packet as shown below
Table 23: Dallas One-Wire Packet Information
Offset
Length
Value
Description
0
2
9002
Preamble
2
1
138
Another device packet will follow OR
10
Last device packet
3
1
49
Packet Type
4
1
0
Error Code (0 indicates success)
5
8
Device Address
13
1
0
CRC8 address check (0 indicates validity)
5.2.
Dallas One-Wire
Transaction
Dec
Hex
254 200 1
FE C8 01
Flags Send Bits Receive Bits Data
Flags Send Bits Receive Bits Data
Performs a single Dallas 1-Wire transaction. Consult your device documentation for information regarding device
specific protocols. If an error is encountered, a corresponding value will be returned by the device.
Flags
1 byte, flags for transaction, see below
Send Bits
1 byte, number of bytes to be sent to the device
Receive Bits
1 byte, number of bytes expected to be received from the device
Data
Variable, data to be transmitted LSB to MSB
Table 24: Dallas One-Wire Flag Table
Bit
Flag Description
7
6
Unused
5
4
0 (Future Compatibility)
3
Add CRC8 to transaction
2
0 (Future Compatibility)
1
Read CRC8 from transaction
0
Reset Bus prior to transaction
Table 25: Dallas One-Wire Error Table
Code
Error Description
0
Success
1
Unknown Command
2
No Devices Found
3
Fatal Search Error
相关PDF资料
PDF描述
VK204-25-V VFD ALPHA/NUM DISPL 20X4 SER
CS1W-OD291 MODULE 96PT OUT NPN
CS1W-OD292 MODULE 96PT OUT PNP
C200H-OD501 TERM BLOCK PLC 32POS TRAN 5V
C200H-OD215 TERM BLOCK PLC 32POS TRAN 24V
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