标题:
Jones Chen继续讲解PLC技术:表端PLC通信模块串口配置流程
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作者:
我是MT
时间:
2014-5-20 22:03
标题:
Jones Chen继续讲解PLC技术:表端PLC通信模块串口配置流程
下面给大家介绍一下,如果用上位机(表端Host MCU)或者PC机来配置PLC表端模块,进行注册连接的过程。
当大家把Prime固件程序烧写到F28069,并上电后,从UARTA和UARTB同时都会收到下面的命令,此命令为:Read Blob request:96 00 04 00 01 00 04 00
1)当不希望此命令重复出现时,需要发送如下命令:
96 c0 08 00 01 00 04 00 00 00 00 00
此时会收到另外一条CRC32命令:96 00 04 00 00 00 04 00
2)再次发送如下命令:
96 c0 08 00 00 00 04 00 00 00 00 00
此时,Read Blob request 将不再发送。
接着大家可以通过Get System Info来获取当前烧写固件的一些信息, 具体解释如下:
Get System Info
HOST : Get System Info Request
01 80 04 00 2A 81 00 00
DSP : Get System Info Reply
01 00 34 00 E5 BF 00 00
01 01 02 07
06 00
00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00
01
03
44 00
00 00 00 00 12 34
01
20
00 00 00 00 00 00
01
00
72 4D E9 80 76 AD
· Firmware version (4 bytes):
01 01 02 07 (7.2.1.1)
· Device Serial number length (2 bytes):
06 00 (6 bytes)
· Device Serial Number (16 bytes):
o
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
· Device Type (one byte):
01
è PRIME IEC432
· Device Mode (one byte):
03
è P2P
· Hardware Revision (2 bytes):
44 00 (0x0044)
·
EUI/MAC Address (6 bytes):
00 00 00 00 12 34
· Port Assignment (one byte):
01
o
Diag
Port
: 0
àSCI-A
o
Data
Port
: 1
àSCI-B
· PHY Setting (one byte):
20
o Auto Mode· Reserved (6 bytes):
00 00 00 00 00 00 (don’t care)
· ARQ and PAC Flags (one byte):
01
· Security Profile (one byte):
00
· Reserved (6 bytes):
72 4D E9 80 76 AD (Don’t care)
紧接着大家需要通过Load System Config命令进行SCI(UART)端口的配置,具体根据硬件上的设计,来配置是UARTA还是UARTB口作为和MCU Host的通信接口。另外,最重要的是要配置EUI地址,也就是表的MAC地址,在下面这个例子中,EUI地址被配置成12 34.Load System Config
HOST : Load System Config Request
0C 80 27 00 19 EB 23 45
01 00
01 00
05
03 00
1A
00
06 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 1234 00 00
00
· TYPE:
01 00 (Port designation)
· Length:
01 00 (one byte)
· Value:
05 (Diag =SCI-B, Data=SCI-B)
· TYPE:
03 00 (System configuration)
· Length:
1A 00 (26 bytes)
· Value: 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 12 34
00
00
o Serial number Length: 06 00o Serial number (16 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00o EUI:
00 00 00 00 12 34
o Device Mode:
00 (Normal mode)
o Auto Mode:
00 (manual mode)
DSP : Load System Config Reply
0C 00 06 00 94 E5 00 00 00 00· Status: 00 00 (success)
当Load System Config配置完成后,需要通过Soft Reset命令来保存设置。
Soft Reset
HOST : Soft Reset Request
05 80 06 00 B9 2D 00 00
00 00 · Reset type: 00 00
DSP : Soft Reset Reply
05 00 06 00 E3 16 00 00 00 00· Status: 00 00 (success)当然,在Soft Reset之后,用户可以通过Get System Info语句来查看设置是否成功。接下来就是设置接收和发送的一些参数,例如发送功率,调制模式,是否加上FEC和ROBO模式等等,当然本身固件上是有默认设置的,因此下面这两条命令,在没有必要的情况下,可以不做设置。Set Info (PHY TX parameter)
HOST : Set Info Request
04 80 0E 00 A4 D2 8C E6
00 00
06 00
01 00
01 00 03 00 · TYPE: 00 00 (0x0000) è PHY TX Parameter· Length: 06 00 (6 bytes)· Value: 01 00
01 00
03 00
o Reserved (one byte)o PRM-ROBO-FEC: 00o Modulation: 01
00 (0x0001 = BPSK)
o TX Level:
03 00 (0x0003)
DSP : Set Info Reply
04 00 06 00 57 60 00 00
00 00· Status : 00 00 (success)Set Info (PHY RX parameter)
HOST : Set Info Request
04 80 0C 00 C6 B4 C6 37
01 00 04 00 01 00 00 00 · TYPE: 01 00 (0x0001) è PHY RX Parameter· Length: 04 00 (0x0004)· Value: 01 00 00 00o Robo/AGCo
DSP : Set Info Reply
04 00 06 00 57 60 00 00
00 00
· Status :
00 00 (success)
再接下来就是设置Alarm,Alarm有很多种情况,主要是用来通知Host主机,现在PLC模块所处的状态,用户可以根据自己的情况来设置具体开通哪些Alarm。Set Up Alarm
HOST : Set Alarm Request
06 80 40 00 0F 11 82 E5
01 00
01 00
00
02 00
01
00
00
03 00
01 00
00
04 00
01 00
00
05 00
01 00
00
06 00
01 00
00
40 00
01 00
00
41 00
01 00
00
80 00
01 00
00
81 00
01 00
00
C0 00
01 00
00
FF
00
01 00
00· TYPE:
01 00
(0x0001) è
Network Deregistration alarm
· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 02 00
(0x0002) è Connection Request alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 03 00
(0x0003) è Disconnection Request alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 04 00
(0x0004) è Network Registration start alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 05 00
(0x0005) è Network Registration complete alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 06 00
(0x0006) è Connection complete alarm (Obsoleted)· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 40 00
(0x0040) è PHY PPDU header CRC failalarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 41 00
(0x0041) è PHY PPDU Syntax Error alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 80 00
(0x0080) è Terminal node Promotion alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: 81 00
(0x0081) è Switch node Demotion alarm· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: C0 00
(0x00C0) è
CL alarm//connection lost
· Length:
01 00 (one byte)
·
Value: 00
·
TYPE: FF 00
(0x0080) è General alarm· Length:
01 00 (one byte)
·
Value: 00
DSP : Set Alarm Reply
06 00 06 00 3F 8D 00 00
00 00
Status :
00 00 (success)
接下来,也是最重要的一句语句就是进行注册,连接用的Attach语句。DSP在接到这句串口命令时,首先要进行Register的过程,然后进行Connection的过程,因此需要一定的等待时间才能收到Attach Confirm的回复。具体过程请参考下一节的Sniffer软件的使用说明。
Attach Request
HOST : Attach Request
10 80 0C 00 90 65 CB 80
06 00 00 00 00 00 00 00 · Device ID Length: 06 00 ( 6 bytes)· Device ID: 00 00 00 00 00 00 Attach Confirm
DSP : Attach Confirm
10 00 12 00 B6 7E 00 00
00 00
06 00
00 00 00 00 00 00
84 00
00 00
· Status:
00 00
· Length:
06 00 (6 bytes)
· Device ID ( 6 bytes)
00 00 00 00 00 00
· Source Address:
84 00
· Base Address:
00 00
当注册和连接成功以后,就可以进行数据传输了。数据的传输一定是由DC端发起的。
数据传输所需要的语句为Data Transfer, 当Host 收到由DC来的命令时,回复如下:
00 80 10 00 ED F4 00 00 01 00 00 00 00 00 00 00 00 00 01 02
所发送给DC端PLC模块的数据位01 02
以上是对需要配置的串口命令的整理和所见,如果大家希望查看关于具体串口命令的具体解释,请参考附件中的文档—TI_plcSUITE_host_msg.pdf
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