ONE PHASE POWER METER (RN8209) SOLUTION

Transcription

1 Fujitsu Semiconductor Design (Chengdu) Co., Ltd. Application Note MCU-AN E-10 F²MC-8FX FAMILY 8-BIT MICROCONTROLLER MB95410H/470H SERIES ONE PHASE POWER METER (RN8209) SOLUTION AMR OPERATION APPLICATION NOTE

2 Revision History Revision History Version Date Updated by Modifications /31/2011 Funny Chen First Draft : Write the user manual of AMR function, and describe the DLT protocol. This manual contains 15 pages. Specifications are subject to change without notice. For further information please contact each office. All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with sales representatives before ordering. The information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of FUJITSU SEMICONDUCTOR device; FUJITSU SEMICONDUCTOR does not warrant proper operation of the device with respect to use based on such information. When you develop equipment incorporating the device based on such information, you must assume any responsibility arising out of such use of the information. FUJITSU SEMICONDUCTOR assumes no liability for any damages whatsoever arising out of the use of the information. Any information in this document, including descriptions of function and schematic diagrams, shall not be construed as license of the use or exercise of any intellectual property right, such as patent right or copyright, or any other right of FUJITSU SEMICONDUCTOR or any third party or does FUJITSU SEMICONDUCTOR warrant non-infringement of any third-party's intellectual property right or other right by using such information. FUJITSU SEMICONDUCTOR assumes no liability for any infringement of the intellectual property rights or other rights of third parties which would result from the use of information contained herein. The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for use requiring extremely high reliability (i.e., submersible repeater and artificial satellite). Please note that FUJITSU SEMICONDUCTOR will not be liable against you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. Exportation/release of any products described in this document may require necessary procedures in accordance with the regulations of the Foreign Exchange and Foreign Trade Control Law of Japan and/or US export control laws. The company names and brand names herein are the trademarks or registered trademarks of their respective owners Fujitsu Semiconductor Design (Chengdu) Co., Ltd. MCU-AN E-10 Page 2

3 Contents Contents REVISION HISTORY... 2 CONTENTS INTRODUCTION BACKGROUND Overview Communication Protocol HW DIAGRAM The HW diagram of AMR function HW REFERENCE SCH FW DIAGRAM DLT Protocol Byte Format Data Frame Format Data Firmware System Diagram FW FUNCTION LIST API HAL ADDITIONAL INFORMATION APPENDIX List of Figures and Tables MCU-AN E-10 Page 3

4 Chapter 1 Introduction 1 Introduction This application note describes how to use One Phase Power Meter (RN8209) solution s AMR function. Chapter 2 explains the background. Chapter 3 explains the HW diagram of AMR function. Chapter 4 explains the HW reference SCH. Chapter 5 explains the FW diagram. Chapter 6 explains the FW function list. MCU-AN E-10 Page 4

5 Chapter 2 Background 2 Background Background of AMR Function 2.1 Overview User can read the meter s data by peripheral equipment or the meter reading system. The communication method is infrared or RS Communication Protocol Communication protocol refers to DLT protocol. MCU-AN E-10 Page 5

6 Chapter 3 HW Diagram 3 HW Diagram Hardware diagram of AMR system 3.1 The HW diagram of AMR function Meter Reading Peripheral Equipment Meter Reading System Infrared RS485 Power Meter Figure 3-1: Hardware diagram MCU-AN E-10 Page 6

7 VCC 3 2 OUT 1 GND C 3 2 E 2 E 3 C AMR Operation V1.0.0 Chapter 4 HW Reference SCH 4 HW Reference SCH Hardware reference SCH of AMR system VDD D3 IR_EMITTER C32 R59 51R 220u/16v Q3 1 2N5551B R61 1K IR_38K Q4 1 2N5401B R64 1K IR_TXD Figure 4-1: Infrared Transmitter Circuit U14 ECH384R1S11000 VDD C R62 10K IR_RXD Figure 4-2: Infrared Receiver Circuit MCU-AN E-10 Page 7

8 AMR Operation V1.0.0 Chapter 4 HW Reference SCH 485_RXD VDD R99 10K U23 V485 R1001K C GND_485 V _TXD R103 1K R109 1K PS R102 U26 10K PS U27 GND_485 C U25 R VDD 8 /RE B 7 6 DE A 5 D GND RS485 GND_485 R104 R106 51K 51K R105 D7 P6KE6.8CA R107 MZ6 MZ6 1 2 J INTERFACE 485_DIR PS R110 10K GND_485 Figure 4-3: RS485 Communication Circuit MCU-AN E-10 Page 8

9 Chapter 5 FW diagram 5 FW diagram Firmware system diagram of AMR system 5.1 DLT Protocol Communication protocol refers to the DLT 多功能电能表通信协议.The protocol is a semi duplex communication method which belongs to principal and subordinate structure. Handset or other DTE is the home site, and multifunctional power meter is the sub site. Every multifunctional power meter has own address coding. The building and relieving of the communication are both controlled by the message frame which be sent by the home site. Each frame has seven area, they are frame start symbol, sub site address area, control code, data length area, data area, frame checksum and frame end symbol. Each area is composed of some bytes Byte Format Data Figure 5-1: Byte Format Data MCU-AN E-10 Page 9

10 Chapter 5 FW diagram Frame Format Data Figure 5-2: Frame Format Data MCU-AN E-10 Page 10

11 Chapter 5 FW diagram 5.2 Firmware System Diagram Start Init UART registers Enable UART receive interrupt Infrared interrupt or RS485 interrupt? N Y Receive byte data Address right? N Y Receive frame data Execute the task Send the answer frame End Figure 5-3: Firmware System Diagram MCU-AN E-10 Page 11

12 Chapter 6 FW Function List 6 FW Function List 6.1 API void AMR_Init(void) void AMR_RS485_Task(void) void AMR_IrDat_Task(void) void AMR_P_L_M_Task(void) Function Prototype void AMR_SetReceiveMode(INT8U ch) void AMR_SetTransmitMode(INT8U ch) Table 6-1: FW API List void AMR_SetGoodTransmit(INT8U ch, INT8U morepacket) void AMR_SetErrorTransmit(INT8U ch, INT8U errorid) void AmrCmdInvalid(INT8U ch) void AmrReadMemory(INT8U ch) void AmrWriteMemory(INT8U ch) void AmrReadMeterData(INT8U ch) void AmrReadDataFollowing(INT8U ch) void AmrReadCommAdress(INT8U ch) void AmrWriteCommAdress(INT8U ch) void AmrWriteMeterData(INT8U ch) void AmrSetMeterPassword(INT8U ch) void AmrFreezeMeterData(INT8U ch) void AmrSetMeterBaudrate(INT8U ch) void AmrClrMeterData(INT8U ch) void AmrClrMeterEvent(INT8U ch) void AMR_PacketPro(INT8U ch) void AMR_Incoming(INT8U ch) void AMR_Outgoing(INT8U ch) Description Data initialization for Automatic Meter Reading Task to handle RS485 AMR procedure Task to handle IrDat AMR procedure Task to handle P-L-M AMR procedure Set AMR on packet receiving mode Set AMR on packet transmitting mode Set to transmit packet without error Set to transmit packet with error message Back to main station that the command received is invalid Read out memory of MCU or EEPROM Write memory of MCU or EEPROM Read Meter data by main Read following data Read out meter commuincation address Write meter commuincation address Write meter data by main Set meter password by main Freeze meter data Set communication baud-rate by main Clear meter data Clear meter event Processing of AMR incoming packet for specified channel AMR incoming packet reception AMR outgoing packet transmitting MCU-AN E-10 Page 12

13 Chapter 6 FW Function List 6.2 HAL Table 6-2: FW HAL List Function Prototype Description void CommResetRx(INT8U port) Set communication port to Rx mode void CommResetTx(INT8U port) Reset comm port to Tx idle mode void CommSendByte(INT8U port, INT8U data) Send 1 data byte through comm port INT8U CommSendBusy(INT8U port) Check if port is busy in data transmission INT8U CommDataReady(INT8U port) Check if port has new data received INT8U CommDataFetch(INT8U port) Fetch one byte of data from receive FIFO void CommClearFifo(INT8U port) Clear port data-receive FIFO MCU-AN E-10 Page 13

14 Chapter 7 Additional Information 7 Additional Information For more Information on FUJITSU semiconductor products, visit the following websites: English version address: Chinese version address: MCU-AN E-10 Page 14

15 Chapter 8 Appendix 8 Appendix 8.1 List of Figures and Tables Table 6-1: FW API List Table 6-2: FW HPI List Figure 3-1: Hardware diagram... 6 Figure 4-1: Infrared Transmitter Circuit... 7 Figure 4-2: Infrared Receiver Circuit... 7 Figure 4-3: RS485 Communication Circuit... 8 Figure 5-1: Byte Format Data... 9 Figure 5-2: Frame Format Data Figure 5-3: Firmware System Diagram MCU-AN E-10 Page 15