PROFIBUS slave development

Transcription

1 June 2004 Page 1 PROFIBUS slave development Prof. Max Felser Division of Electrical- and Communication Engineering Jlcoweg 1, CH-3400 Burgdorf, max.felser@bfh.ch June 2004 Page 2 How to select a interface Old device? no yes External interface only one bus? no, Different busses yes Small numbers > 1500 pieces p.a.? yes Own development Complex device? yes Communication- Modul Single Chip Solution

2 June 2004 Page 3 Set of s (Hilscher) EC-1 PC-cards OEM-Module ASIC Kits same firmware same easy-to-use user interface same configurator same device driver different formfactors June 2004 Page 4 Set of ASICs (SIEMENS) Master ASPC2 Intelligent Slave SPC3 12 Mbaud RS 485 DPC31 SPC41 + SIM kbaud IEC Simple Slave LSPM2 SPM2

3 June 2004 Page 5 The defines the requirements Short Name Application Requirements Bitrate / Speed PA/GA Processautomation Buildingautomation Long distances Slow processes KBit/s MPI Programming Compatible with SIMATIC FMS Master-Master communication Not for new systems KBit/s 500 KBit/s DP Remote I/O Efficient protocols 1.5 MBit/s MC Motion Control Short and stable cycle times 12 Mbit/s June 2004 Page 6 PROFIBUS DP System Structure User -- Program e.g. Proxy -FB (IEC ) -3) Device Type Manager (DTM), (EDD-Interpreter) Application Programmer's (API) Process Image Comm-FB (IEC ) Field -Device - Tool (FDT) DPV0 / MS0 MS1 MS2 Communications Platform PROFIBUS FDL PROFIBUS FDL Class 1 Master Class 2 Master Slave PROFIBUS FDL MS0 MS1 MS2 Communications Platform Device Model

4 June 2004 Page 7 Possible internal structure of Fieldbus Data Link FDL-Services SRD SDN FDL-Management SAP FDL PROFIBUS-FDL Life-List Activate (SAP) CODEC UART Write Parameter Read Parameter Physical Layer (RS-485) June 2004 Page 8 Implementation Technologies Software (C) Hardware (ASICs / VHDL) Hybrid solutions Bitrate kbit/s 1.5 MBit/s 12 MBit/s UART Block HW HW HW CODEC Block SW HW HW FDL Block SW SW HW For mass production and top speed special HW is mandatory

5 June 2004 Page 9 Classification of interfaces Application Communication Layer 7 Layer 2 Layer 1 Class 1 Class 2 Class 3 Class 4 Class 5 and the and the intelligent (Multiplexer) Adopted from Prof. Bender, TR-Fachkongress, 1992 June 2004 Page 10 Class 5: Multiplexer interface PROFIBUS RS-485 RS-485 SPM2/ LSPM2 Process data 48 MHz NORMOPER DIAERROR Clock pulse generator for ser. EEPROM shift register I/O M i c r o s e q u e n c e r TxD RxD Port A Port B Port C Port D Port E RS 485 I/O I/O /Diag I/O /Diag I/O /Diag Diagnostics Watchdog Baudrate Generator XSREE

6 June 2004 Page 11 Examples of Multiplexers (SIEMENS) LSPM2 SPM2 MQFB, 80 Pin, 2cm 2 PQFB, 120 Pin, 10cm 2 Transmission rate up to 12Mbaud DP Protocol completely integrated No required Data Volume: LSPM 2-32 bit I/O & 8 bit diagnostic SPM 2-64 bit I/O & 16 bit diagnostic Serial PROFIBUS interface (Example) June 2004 Page 12 1 CTS 3 RTS P5 4 TxD P5 M RxD 2 20K 68n 300 R 68n M 680 R U + IN U- M M HCPL7101 U+ U- EN OU T HCPL R HCPL060f OUT EN U- U+ U + IN U- EN 680 R 680 R 68n nf 500 V 68n 680 R 1K2 300 R 24HC132 & 2 1 M 2P5 2P5 2M 2P5 68n 2M 2M 1K2 680 R 1 U+ EN1 GND EN R 75ALS176D P5 100 K 100 K Driver select: Differential voltage > 2V Important: Electrical isolation to bus P5 and 2P5 2M B-line RTS 2M 2P5 A-line Shield

7 June 2004 Page 13 Class 5: Multiplexer interface Busadresse A D Digital Input DI2 SPI LD1 CLK Rx/Tx+ Rx/Tx- Diagnose LED D A Digital Output DO1 PROCESS FIELD BUS 5V GND DI1 5V GND AnyBus-IC June 2004 Page 14 Classification of interfaces Application Communication Layer 7 Layer 2 Layer 1 Class 1 Class 2 Class 3 Class 4 Class 5 and the and the intelligent (Multiplexer) Adopted from Prof. Bender, TR-Fachkongress, 1992

8 June 2004 Page 15 Class 3: Simple Applikationsprozessor TxD RxD Serielle 2-leiter TTL-Schnittstelle RxD TxD Peripherie Adress + Datenbus Rx/Tx+ Rx/Tx- 5V GND PROCESS FIELD BUS Peripherie 5V GND AnyBus-IC Up to 32 Byte Input and 32 Byte Outputdata June 2004 Page 16 Complete interfaces (HMS) DIL 32 Format 42 x 21 x 12 mm AnyBus-IC includes all analog and digital interfaces of the to the bus

9 June 2004 Page 17 Intelligent ASICs (SIEMENS) SPC3 SPC41 DPC31 ASPC2 Max. Transmission Rate [Mbaud] Transm. Medium RS 485 RS485 / MBP-IS (with SIM 11) RS 485 Protocol DP (DPV1) DP/FMS/PA DP/DPV1 DP/DPV1/FMS Message Buffer ,000 [kbyte] external Housing PQFP, 44 PinPQFP, 44 Pin PQFP, 100 Pin MQFP, 100 Pin June 2004 Page 18 Available Firmware SIEMENS ASICs SPC 3 SPC 41 Application Application Slave Slave DPC 31 Application Slave PROFIBUS DP PROFIBUS FDL PROFIB. DP PROFIBUS FMS PROFIBUS FDL + Data-Link-Layer IS + Physical-Layer Synchronous DPV1 PROFIBUS DP PROFIBUS FDL + Data-Link-Layer IS + Physical-Layer Synchronous PROFIBUS RS 485 (max. 12Mbaud) Hardware SIM 11 SIM 11 Software PROFIBUS (intrinsic safety) MBP-IS (31.25kbaud)

10 June 2004 Page 19 One of the most used. SPC3 (VPC3) up to 244 byte of data automatic search of baudrate 9.6kbd-12Mbd 3 buffers for each: input & output data; 1 for PRM; 2 for CFG & DIAG SPC3 DP slave protocol integrated firmware available 1.5 kbyte internal RAM interface to: Intel (8032, 80x86) Motorola (HC11/16/916) Siemens (80166/80167) June 2004 Page 20 Simple adaptation of SW libraries Example with SIEMENS if(dps2_get_ind_new_prm_data()) { /*=== New parameter data ===*/ UBYTE SPC3_PTR_ATTR * prm_ptr; UBYTE param_data_len, prm_result; UBYTE ii; prm_result = DPS2_PRM_FINISHED; do { /* Check parameter until no conflict behavior */ prm_ptr = DPS2_GET_PRM_BUF_PTR(); param_data_len = DPS2_GET_PRM_LEN(); /* data_length_netto of parametration_telegram > 7 */ if (param_data_len > 7) { if (( *(prm_ptr+8) == 0xAA) && ( *(prm_ptr+9) == 0xAA)) prm_result = DPS2_SET_PRM_DATA_NOT_OK(); /* as example!!! */ else { for (ii= 0; ii<param_data_len & ii <10; ii++) // store in the buffer prm_tst_buf[ii] = *(prm_ptr+ii+7); prm_result = DPS2_SET_PRM_DATA_OK(); } } else prm_result = DPS2_SET_PRM_DATA_OK(); } while(prm_result == DPS2_PRM_CONFLICT); SPC3 User makes changes to adjust code to own

11 June 2004 Page 21 PROFIBUS-DP CAN Gateway for Motion-Controller The motors to turn the CDs are controlled over a PROFIBUS-DP CAN gateway Project with: Balzers Process Systems June 2004 Page 22 PROFIBUS-DP force interface in a connector Singlechip 8051 with a SPC3 Project with: Force Measuring Systems AG

12 June 2004 Page 23 Class 3: Low power (e.g. PROFIBUS-PA for temperature transmitter) PROFIBUS-PA s for Field devices are very small and require only a few ASICs The use of low power Micros and the low power PROFIBUS ASICs reduces power consumption and ensures powering over the bus at less than 10 ma. direct replacement of existing "Round Boards" is possible Bus connection to MBP-IS technology I SIEMENS SIM 1 SIEMENS SPC 4 Mitsubishi M16C D/A, A/D 0-10 V 0/4-20 ma June 2004 Page 24 PROFIBUS-PA interface for temperatur transmitter Project with: Camille Bauer AG, Wohlen

13 June 2004 Page 25 Classification of interfaces Application Communication Layer 7 Layer 2 Layer 1 Class 1 Class 2 Class 3 Class 4 Class 5 and the and the intelligent (Multiplexer) Adopted from Prof. Bender, TR-Fachkongress, 1992 June 2004 Page 26 Class 1: High performance interface (e.g. frequency converter with PROFIdrive profile) Host with seperate micro Dual Port RAM Commands Data local RAM 16 Bit Micro local Eprom Protocol ASIC e.g. SPC3, SPC4 EC1, PBS RS 485 / Fibre Optic PROFIBUS Host computer runs software on seperate Micro PROFIBUS runs Protocol Software on separate Micro

14 June 2004 Page 27 Available Moduls (SIEMENS) IM 184 Simple Slave module IM Intelligent Slave module IM 180 Master module SPC3 ASPC2 IM 181 Carrier board for ISA LSPM2 5V DC power supply 0 to 70 C permissible ambient temperature Transmission rate up to 12Mbaud June 2004 Page 28 Example of Moduls (HMS) Application- interface Single size 54 x 86 mm Feldbus connection LEDs

15 June 2004 Page 29 The Hilscher Dual-port Memory Host Side Dual-port memory CIF/COM side process image output data process image input data Memory applicable to fieldbus systems with I/O devices as opposit to a messaging system Size 1 KByte or 7 KByte send mailbox receive mailbox protocol parameter protocol status system status status/handshakebits command/handshake bits Highest 1 KByte is always present and has the same structure for all fieldbus systems June 2004 Page 30 NetX High performance ASIC

16 June 2004 Page 31 Development Kit DP & PA - Test Board (SIEMENS) June 2004 Page 32 Development Kit DP & PA - Test Board (3) CP 5613 (2) OBT PA Link & PA Coupler (1) FO Cable

17 June 2004 Page 33 Development Kit VPC3+ - Test Board (PROFIchip) June 2004 Page 34 PROFIBUS Test Laboraories (PTL) PROFIBUS certification tests in 7 independent PTLs worldwide Certification in accordance with general framework defined by PROFIBUS International ensures quality standard Certification ensures interoperability and thus plant availability Netherlands Germany (3) USA Japan China

18 June 2004 Page 35 Certification Procedure Test device Test campaign in test laboratory Certification rules Uniform test measures and test process Comprehensible and documented results No OK? Yes More than 800 certificates awarded Certification through PROFIBUS International