REMIO, Profibus-DP comms interface manual issue 2
Contents
1. For this purpose the initial address factory setting is fixed at 32 decimal The slave address can ONLY BE SET BY THE LINK This address is stored in a non volatile memory and e must be changed by the user before connecting the unit to the link OR e The address setting must be made with only one slave at the address 32 at a time on the link To be reminded address 127 reserved for broadcasting defined in the standard address 125 reserved for remote configuration by Type 2 master for the first Start up Only addresses 0 to 124 can be used in normal operation with a type 1 Master defined in the standard Nota As possible do not use address 00 which is generally reserved for SIEMENS master In the same way addresses 0 1 2 3 are reserved for Simatic S7 from SIEMENS 4 2 Connections 4 2 1 Connections on basic module 4 2 1 1 Profibus connector The 6 pins connector on the bottom of the unit is used to connect the shielded twisted pair of the bus RX TX RX TX 61 62 63 64 65 The connections number 61 and 65 are internally connected together as well as the connections number 62 and 64 The communication electronics is insulated from the Control electronics The earth terminal is accessible near the communication connector at the bottom of the unit for shielding purposes Wiring and shielding information are given in the REMIO User Manuals HA175874ENG for REMIO TPO and HA175726ENG for REMIO2. series Ident_Number 0x1659 Protocol_ Ident 0 PROFIBUS DP Station_Type 0 DP slave FMS_supp 0 Hardware_Release V1 0 Software_Release 1 0 9 6 supp 1 auto 19 2 supp 1 auto 93 75 supp 1 auto 187 5 supp 1 auto 500_supp 1 auto 1 5M_supp 1 auto MaxTsdr_9 6 60 unit tbit MaxTsdr_19 2 60 MaxTsdr_93 75 60 MaxTsdr_ 187 5 60 MaxTsdr_500 100 MaxTsdr_1 5M 150 Redundancy 0 Repeater Cl Gg 0 24V_Pins 0 DP_Slave Informations Freeze _Mode_supp 1 Sync_Mode_supp 1 Auto_Baud_supp 1 Set_Slave_Add_supp 1 User Pm Data Len 04 User Pm Data 0x00 0x00 0x00 0x00 last byte to 0x01 for inverted logic Min_Slave_Intervall 1 100 micro second Modular_ Station 1 Max_Module 4 Max_Input_Len 54 Max_output_Len 54 Max_Data_Len 108 Module REMIO BASE 0x35 mandatorv 1 module Endmodule Module REMIO TPO 0x3f optional 0 to 3 modules Endmodule SEEEEEEEEEEEEEEEEFEEEEEEEEEEEEEEFEFEFEEEEEEEFEEEEEEEEEEFEEEPE EEE PEF
3. CONTENTS 7 1 Profibus status LEDs basic modulel ee Ze REICHERT REMIO PROFIBUS DP Communications Interface Communications Manual Part N HA 176078 ENG Issue 2 0 07 2000 1 INTRODUCTION This manual describes Profibus communications implementation in REMIO TPO and REMIO Digital DI DO TE series interfaces Concerning any detail about these units or their functionnal operation please refer to HA175874ENG iss 2 manual for REMIO TPO interface HA175726ENG iss 2 0 manual for REMIO Digital DI DO interface Following documents have been used for these specifications e Standard DIN 19245 Part 1 PROFIBUS Data transmission technique Medium access methods and transmission protocols Service interface to the application layer Management e Standard DIN 19245 Part 3 PROFIBUS DP Process Fieldbus Decentralised Periphery e Standard ISO IEC 8802 2 Information processing systems Logical Link Control e Standard ISO IEC 8802 4 Information processing systems e Token passing bus access method and physical layer specifications e Standard CEI 1131 3 programmable controllers programming Languages e Siemens SPC3 User Description Version V1 0c 12 1995 2 PROFIBUS GENERAL CHARACTERISTICS The goal of this paragraph is to remember the basic principle of PROFIBUS issued from the 1100 pages of the standard PROFIBUS DP Decentralised Peripherals is made for the fast control of remote input o
4. DI DO It must be particularly paid attention to line impedance to impedance adaptation of the link maximal length etc The bus terminal resistors can be put in or out circuit by means of the 2 switches intended for this purpose at the top of the unt Note that only the last unit on the bus must have the Impedance adaptation resistors fit SW1 3 SW 1 4 bus termination resistors selection More than 32 stations can not be used without any repeater 5 PROFIBUS USER INFORMATION 5 1 _ Principle Data Transfer description State Diagram According to the standard DIN 19245 3 the Interface receive parametrisation data and configuration data These 2 exchange types are required during the Start up phase of the system The device can reach the DATA_EXCHANGE STATE only when the 2 sequences PARAMETRISATION and CONFIGURATION are completed At Start up the device enters in a waiting phase The STATE diagram is produced here after described in the standard DIN 19245 3 In this diagram it will be found the following states POWER ON The system is powered An Initialisation phase is started Nota Address change is supported on these units SET_SLAVE_ADD supported A Set_Slave_Address change is accepted only in the Power_On State _WPRM Wait_Parameters The unit is waiting for System Parametrisation Message PNO Identification synchronisation and freeze mode acceptation and for Data Parametrisation Message wh
5. er 8 3 1 of the Profibus DP standard MSB LSB EE a Re a EE EE EE EEN e BYTE 00 STATION STATUS 1 Bit 7 Master Lock Set by the DP Master Bit 6 Pm Fault Last Parameter Frame was faulty Bit 5 Invalid Slave Response Set by the DP Master Bit 4 Not Supported Function requested not supported from this DP slave Bit 3 Ext Diag A Diag Entry exists in the Slave specific Diag area Ext_Diag_Data Bit 2 Cfg Fault The last received configuration data from the DP Master are different from these which the DP Slave has determined see Check_Cfg Bit 1 Station Not Ready This Station is not yet ready for data transfer Bit 0 Station Non Existent Set by the DP Master e BYTE01 STATION STATUS 2 Bit 7 Deactivated Set by the DP Master Bit 6 not used Bit 5 Sync Mode This station has received the Sync control command Bit 4 Freeze Mode This station has received the Freeze control command Bit 3 WD On Set as soon as the WatchDog control has been activated Bit 2 always set Bit 1 Stat Diag Set as soon as an external communication fault has been detected in this case the Diag LEDs Indicate an external fault See chap 7 The DP Master shall fetch diagnostic informations until this bit is reset again Bit 0 Prm Reg This station shall be re parametrised and re configured This bit has priority on bit 1 e BYTE 02 STATION STATUS 3 Not used e BYTE 03 MASTER ADD Address of the master which has parametrised t
6. his station e BYTES 04 05 IDENT NUMBER PNO Ident number 2 octets 5 2 2 Description of diag bytes in the second part of the diag field user diag field command word The User Diag field begins at the address 6 of the Diag field The unit sends diagnostics data to the master in this field This field comprises 3 bytes Diagnostic data are transferred only after a change of the pending data One exception to this is the freeze mode Important if freeze mode is activated the diagnostic data is also frozen A frame is thus sent to the master with no change in diagnostic data until a further freeze command e BYTE 06 Diag Header This byte shows the total number of bytes in the external Diag Field comprising itself This byte has always the value 03 e BYTE 07 08 Command Word CWh CWIl Shows the actual configuration of the Unit as follows SE 1 second 1 first 1 TPO basic TPO TPO module optional optional module fit module ZC module direct 1 Input inverted 5 3 Configuration The Configuration frame is provided by the Master indicating the configuration of the Input and Output Buffers The unit expects 1 2 3 or 4 code bytes following the hardware configuration of the unit These bytes are e BYTE 1 0x35 indicating that the 6 ports of the unit are Read in the Input Buffer and Written in the Output Buffer The 6 ports are read and written in the following order in both Input and Out
7. ich data are effectively available for read access In this state a Diagnostic demand is also accepted Any other type of message is rejected in this State WCFG Wait_Configuration This kind of message specifies the number of data accessible to the input and output ports and possibilities of read and write for different parameters In this State the Unit is waiting for a Configuration message or Parametrisation message or Diagnostic message Any other type of message is rejected in this State _DXCHG Data_Exchange When the parametrisation and the configuration have been accepted then the slave is ready for the Data Exchange with the Master which has parametrised and configured it or with another master in the condition stated in the DP standard POWER_ON init Set_Slave_Address Slave_Diag Get_Cfg Slave_Diag Get_Cfg Set_Prm nok Set_Prm o Chk_Cfg no Slave_Diag Get_Cfg Set_Prm ok Chk_Cfg ok Data_Exchange ok Read_Input Read_Output Global_Control PROFIBUS State Diagram When the system is in the DATA_EXCHANGE_STATE DXCHG the process data can be read and or written Warning the sequence Parametrisation then Configuration must always be executed in this order 5 2 _ Slave diagnostic The Diag can be read in any State of the State Machine 5 2 1 Description of diag bytes in the first part of the diag field This first six byte part of the Diag message is described in the chapt
8. l control The unit supports SYNC and FREEZE modes Note if freeze mode is activated the Diagnostic data is also frozen A frame is thus sent to the master with no change in diagnostic data until a further freeze command 5 6 Access to the DI DO ports and TPO channels The REMIO interface may contain up to 3 output ports 3 Input output ports each being of eight bits or 48 TPO channels 5 6 1 Digital input output DI DO Ports The 6 Ports are always present in the Input and Output buffer even if they are not used e g REMIO TPO interface The 6 ports are read and written in the following order in both Input and Output Buffers Absolute Address BEE Po If SW1 1 ON The 6 ports are configured as output and can be written in the Output Buffer Note attempting to write a TPO port has no effect If SW1 1 OFF Output ports1 3 5 can be written in the Output Buffer at the addresses 0 1 2 Input ports 2 4 6 can be read in the Input Buffer at the addresses 3 4 5 Note attempting to write an input port in the Output Buffer has no effect Warning The unit must be powered off in order to change SW1 1 position Change of SW1 1 position during operation is not permitted 5 6 2 Time proportioning outputs TPO The TPO channels are present in the Input and Output Buffer only if the unit is equipped with the corresponding modules Basic module absolute addresses 6 to 21 First optional module absolute add
9. put Buffers Ofsi Port JL Ho __ e Oo o O P OUTPUT OUTPUT fe SRB E po S Poe INPUT OUTPUT O po Porth INPUT OUTPUT O e BYTE 2 none or 0x3F none if the unit is not TPO type 3F if the unit is TPO type The first 16 channels are read and written in the following order in both Input and Output Buffers Offset Chanel Direction po UT PUT e BYTE 3 none or 0x3F none if less than 32 TPO output unit 3F for at least 32 TPO output unit The next 16 channels are read and written in the same order in both Input and Output Buffers e BYTE 4 none or 0x3F none if less than 48 TPO output unit 3F for 48 TPO output unit The last 16 channels are read and written in the same order in both Input and Output Buffers 5 4 _Parametrisation The Master transfers parameter assignment data to the unit 4 bytes of user parameter data must be sent to the unit in addition to the 7 normal parameter bytes e BYTE 7 User Def_PRM1 Byte bit7 bit6 bit5 bit4 bit3 m bit1 bitd designation _ Linen o 0o wo Gase 0 0 User Def PRM Only Bit 2 defines the Watchdog time base 1L gt 1ms OL gt 10ms e BYTES 8 9 set to 0x00 e BYTE 10 set to 0x00 or 0x01 relevant of DI DO products only 0x00 gt Bottom ports are read in direct logic 0x01 gt Bottom ports are read in inverted logic Note Bytes number 8 and 9 are used for production configuration purpose 5 5 Globa
10. resses 22 to 37 Second optional module absolute addresses 38 to 53 5 7 Other services The unit supports following services Set_Slave_Address Read_Inputs Read_Output Get_Config 6 PERFORMANCES The system reaction time is described by the standard see part 3 chap 7 pages 33 34 At 1 5Mbaud following performances can be considered One REMIO Interface unit can drive 32 TE units in less than 50us 32 REMIO Interface units can be accepted without repeater Then up to 1000 TE units can be set ON or OFF in less than 2ms depending on the global configuration of the system In any case more than 1000 digital input thyristor units updated in less than 10ms at 1 5Mbaud Example On a full REMIO TPO configuration the time measured for 108 variables exchanged 6 ports read and write and 48 TPO read and write is 937 microseconds 1 5MBaud 7 TROUBLE SHOOTING 7 1 Profibus status LEDs Basic module The Basic module is equipped with 2 LEDs GREEN RED e The GREEN LED indicates that the unit is in the Data Exchange state The master exchanges data with it at a rate that prevents the Watchdog Time Out to occur e The RED LED ON in steady state a fatal Error has occurred during Start up Flashing at the rate 1 2s ON 1 2s OFF indicates the Interface is not communicating with the Master The Master has never addressed this device OR the Watchdog Time Out has occurred before any valid communication
11. rofibus Control is assumed from basic module Layer 1 and 2 of the OSI model are controlled by a specific component SPC3 Most of these specifications are relevant to the ASIC specifications Bus Connection using shielded twisted pair RS485 Automatic communication speed search and control 9 6 19 2 93 75 187 5 500 1500 KBaud The BaudRate Detection function is activated automatically after each RESET or after a Watchdog Time Out Interface status indicated by LEDs See chapter 7 Address set directly by the link from the Master Unit address can be set or changed from the bus without any switch or jumper Exiting the factory the address of the interface is set to 32 decimal A Watchdog Timer monitors the elapsed time between two messages In case of error all the ports are set to logical O level in order to avoid malfunction The watchdog is reset with each error free frame received on recognition of the Station Number The Time Out can be programmed from an appropriate control software for example comET 200 from Siemens A value between 2ms and 650s can be selected The Time Out is calculated as follows T WD Factor WD_1 WD_2 The factor 1ms or 10ms is set during parametrisation see chapter 5 4 Setting WD_1 WD_2 1 is not permitted Neither WD_1 nor WD_2 may be 0 No redundancy available 4 INSTALLATION 4 1 Address setting Before to start a DP system it must be assigned an unmatched address to each station
12. utput For this purpose it is necessary to transmit in the same way Process values Parameters Configuration Diagnostics and faults This kind of communication require fast reaction times Following table gives an overview of the main characteristics of PROFIBUS DP Requested characteristics PROFIBUS DP characteristics More than 1000 Input Output Exchanges Fast reaction time with 32 different units connected on the link in 10ms at 12 MBaud EE mono master or multi master Operations PROFIBUS part 1 specifications All the PROFIBUS functionalities are Simple and cheap Protocol integrated in an ASIC which can be used alone for simple applications Disgnostietunetions Te Diagnostic functions slaves aen gege EE a Simple user Interface defined on the user level PROFIBUS FMS and PROFIBUS DP share Existing Wiring and Tools Used the same simple RS485 medium Same technology used for all the applications PNO certification of conformance to the Inter operability standard 3 GENERAL PRODUCT SPECIFICATIONS For complete specification information please refer to User manual HA175874ENG iss 2 0 REMIO TPO or User manual HA175726ENG iss 2 0 REMIO Digital DI DO 3 1 _REMIO PROFIBUS Interface characteristics The REMIO Interface is a PROFIBUS DP Slave Module according to DIN 19245 3 Certification tests made by Pending Certification given by Pending PNO Identification Number 1659 hex The P
13. with the Master Normally this LED must be OFF if the unit has been correctly parametrised and configured and the Data Exchange has started In this case following points must be verified Parametrisation string Configuration string And then connections Bus cable Bus length Impedance adaptation Address Verify that any other slave has not the same address Verify that the watchdog Time Out is not too short versus the Master scan rate ULUL BOTH LEDs OFF indicates that the device is not powered 7 2 Input Output status LEDs 7 2 1 Digital Input Output modules DI DO modules Each module is equipped with 2 LEDs GREEN ORANGE The GREEN LED indicates that all is in order with the corresponding module power supply and internal connections The ORANGE LED is lit when the bi directional Input Output Ports at the bottom of the unit are configured as INPUT 7 2 2 Time Proportioning Output module TPO modules The_GREEN LED indicates that all is in order with the corresponding module power supply and internal connections 8 DEVICE DATA BASE DDB The Data Base which permits the configuration of the Master is established following the standard Part 3 chap 13 SEEFEEEEEEEEEEEEEEEEEEEEEEEEEEEREEEEREEEEEEEREEREEEEEEEEEEE EEE EEE ET File name EURO1659 GSD General Informations Profibus_ DP Vendor_Name EUROTHERM Automation Model_ Name REMIO Revision TE
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