FC8x. Profibus Communication

Transcription

1 Title FC8x Profibus Communication SIEB & MEYER AG Auf dem Schmaarkamp 21 * D Lüneburg * (Germany) Telephone: * Telefax: documentation@sieb-meyer.de Internet: FC8x Profibus Communication

2 Copyright Translation of the original instructions. Copyright 2012 SIEB & MEYER AG. All rights reserved. This manual or extracts thereof may only be copied with the explicit authorization by SIEB & MEYER AG. Trademarks All product, font and company names mentioned in this manual may be trademarks or registered trademarks of their respective companies. Identification Key FC8x_BED_Profibuskommunikation/R02-SM-EN-km/uh September 18, 2012 Profibus Communication FC8x

3 1 Protocol Description Communication with Higher-ranking Controls Prompt Telegram CMD_SBYTE CMD_BYTE CMD_PAR Reply telegram SFU_SB SFU_SB SFU_SB SFU_SB SFU_PAR Handshake between Master and Slave Commands Command 1, Delete Error (ERR_RES) Command 5, Traverse Speed (MOVE) Command 32, Controller Off (REG_OFF) Command 33, Controller On (REG_ON) Configuration of the PLC (S7) Setup of the Anybus GSD-File Configuration of an Anybus Participant Anybus Communicator by HMS Connectors, Switches and Indicators Setup Accessories Checklist Installation and Startup Summary Technical Specification Functional Description FC8x Profibus Communication 1

4 Inhalt 2 Profibus Communication FC8x

5 1 Protocol Description Protocol Description 1.1 Communication with Higher-ranking Controls The SIEB & MEYER DNC61 protocol is used to connect an FC8x to a higher-ranking control (Master). The physical connection of the slave to the master is supported by the following bus systems: Profibus DP The Communication between masters and CNC modules is always carried out by the master-slave method, i.e. a CNC-module becomes only active after being requested by the master. Data is exchanged cyclically in data telegrams. The prompt telegram is applied from the master to the CNC module and the reply telegram from the CNC module to the master. The cycle time of the data exchange arises from the number of bus participants and the transfer rate of the bus system. During the communication an individual bus address, which is derived from the module address, is allocated to each CNC module. In the INTERBUS-S this is made up of the order in the connector. 1.2 Prompt Telegram The master and slave communicate in a cyclic interchange of firmly defined prompt and reply telegrams. Range: 8 Bytes, data received from the FC module Exchange of request and reply telegrams Byte# Name Meaning 0 CMD_SBYTE Control byte for the command transmission Bit number Name Meaning 0 CMD_VALID Start command CMD_HBEAT Heartbeat-Bit 7 1 CMD_BYTE Command byte, contains the command number to 7 CMD_PAR Double word (4 bytes) for the parameter transmission to the FC module FC8x Profibus Communication 3

6 Protocol Description CMD_SBYTE The master transmits the control bits to the frequency converter via the command control byte. Among other things, the handshake between master and frequency converter is realized by the command control byte. CMD_VALID If this bit is toggled, another command will be initiated. At this time, CMD_BYTE and CMD_PAR must contain valid data. CMD_HBEAT The heartbeat bit CMD_HBEAT can be used for the mutual monitoring of master and slave (frequency converter). For this, the master toggles the bit CMD_HBEAT and monitors whether the frequency converter has adapted the bit SFU_HBEAT after a defined time CMD_BYTE Via the CMD_BYTE, the master selects the respective command stored in the frequency converter. The selection is made by unambiguous command numbers. In the CMD_PAR, a 32 bit parameter can be transmitted with every command CMD_PAR In the CMD_PAR, a 32 bit parameter can be transmitted with every command from the master to the frequency converter. 1.3 Reply telegram The master and the slave communicate in a cyclic interchange of firmly defined prompt and reply telegrams. Range: 8 bytes, data transmitted from the FC module to the master Exchange of request and reply telegrams 4 Profibus Communication FC8x

7 Protocol Description Byte# Name Meaning 0 SFU_SB0 Status byte 0 Bit number Name Meaning 0 SFU_DONE Command finished, toggle 1 SFU_ACKN Command received, toggle 2 SFU_ERR Error message SFU_HBEAT Heartbeat-Bit 7 1 SFU_SB1 Status byte 1 Bit number Name Meaning 0 1 SFU_RUN Ready for operation 2 SFU_ON Controller activated 3 4 SFU_V_ZERO Ramp generator = Zero 5 6 SFU_V_OK Ramp generator = reference value 7 SFU_I_LIMIT Peak current 2 SFU_SB2 Status byte 2, error and message codes 3 SFU_SB3 Status byte 3, state of the digital outputs 1 to 8 (bit 0 to 7) 4 to 7 SFU_PAR Command return value SFU_SB0 The status byte SFU_SB0 informs the master about the status of the frequency converter via separate status bits. SFU_DONE By adapting the bit SFU_DONE to the bit CMD_VALID the master is informed that the execution of a command is finished. SFU_ACKN By adapting the bit SFU_ACKN to the bit CMD_VALID the master is informed that the command has been received and that it will be executed. SFU_ERR The bit indicates whether a command error or a malfunction of the unit occurred. The bit SFU_ERR must only be evaluated after the command has been finished. Then SFU_DONE and SFU_ACKN are adapted to CMD_VALID. In this case, the byte SFU_SB2 contains the error code. SFU_HBEAT The heartbeat bit SFU_HBEAT can be used for monitoring the frequency converter. For this, the master toggles the bit CMD_HBEAT and monitors whether the frequency converter has adapted the bit SFU_HBEAT after a defined time. FC8x Profibus Communication 5

8 Protocol Description SFU_SB1 The status byte SFU_SB1 informs the master about the status of the frequency converter via separate status bits. SFU_RUN This bit will be set if the frequency converter is in the operational mode AUTO- MATIC. SFU_ON The bit indicates whether the output stage is activated (SFU_ON = 1) or deactivated (SFU_ON = 0). SFU_V_ZERO If SFU_V_ZERO = 1, the ramp generator has the value 0. SFU_V_OK The bit SFU_V_OK indicates that the ramp generator has reached the reference value. SFU_I_LIMIT The bit SFU_I_LIMIT will be set when the frequency converter is within the current limitation SFU_SB2 If bit SFU_ERR is set, SFU_SB2 contains an error code. If bit SFU_ERR is not set, SFU_SB2 contains a message code. An error code always overwrites a message code SFU_SB3 This status byte transmits messages back to the master (see table) SFU_PAR After request by respective commands, the frequency converter transmits a 32 bit parameter to the master. The parameter is only valid, when SFU_ACKN is equal to SFU_DONE. 6 Profibus Communication FC8x

9 Protocol Description 1.4 Handshake between Master and Slave The handshake between master and frequency converter is generated by tracking the bits SFU_ACKN and SFU_DONE to the master bit CMD_VALID. The following diagram shows the time dependent cycle of a sequence of commands. Command cycle Command 1: [1] The master toggles the CMD_VALID bit after creating a command in the CMD_BYTE bit. Both can also be done in the same prompt telegram. [2] After adapting SFU_DONE the frequency converter provides current return values in the double word SFU_PAR. [3] If the command has been finished, the frequency converter will adapt SFU_DONE to CNC_VALID. Thus, the master will get the information about the finished command. If an error occurs in the frequency converter during this time, SFU_DONE will be adapted to CMD_VALID. Then the error code will be transmitted to the master by SFU_SB1.SFU_ERR and SFU_SB1 do not contain valid data until SFU_DONE is adapted to CMD_VALID. FC8x Profibus Communication 7

10 Protocol Description 1.5 Commands Command 1, Delete Error (ERR_RES) By means of this command error codes can be deleted. The frequency converter does not execute any drive functions before an error has been acknowledged. When the error is still current during the execution of the command, the error code is set again. Error codes can only be deleted after the corresponding cause of error has been eliminated. By no means the error may be reset automatically. Commands used to remove an error status can be executed despite of the set error code. The command will only be executed when: the operating mode of the FC is set to AUTOMATIC (SFU_RUN = 1) Command number CMD_BYTE = 1 Condition of call SFU_RUN = 1 Return value after the command is finished: SFU_ERR = 1 -> error SFU_SB2 = SFU_ERR Command 5, Traverse Speed (MOVE) This command can move the drive with a preset speed. The command will only be executed when: SFU_RUN = 1 the output stage is activated (SFU_ON=1) there is no interferences (SFU_ERR=0) The command will only be finished when an interferences occurred or the command has been canceled (CMD_Byte unequal to 5 or the bit CMD_VALID has been toggled) Command number CMD_BYTE = 5 Condition of call SFU_RUN = 1 SFU_ON = 1 SFU_ERR = 0 Parameters of call CMD_PAR = reference speed in rpm / 10 8 Profibus Communication FC8x

11 Protocol Description Return value during the execution Actual current value A/100 Actual speed value 1/min/10 Return value after the command is finished SFU_V_ZERO = 1, when actual speed = Null SFU_PAR = SFU_ERR = 1 -> error SFU_SB2 = CNC_ERR = 1 -> error code Command 32, Controller Off (REG_OFF) By means of this command the output stage will be deactivated. The command will only be executed when: SFU_RUN = 1 Command number CMD_BYTE = 32 Condition of call SFU_RUN = 1 Return value after the command is finished SFU_ERR = last state SFU_SB2 = last error code SFU_ON = 0 FC8x Profibus Communication 9

12 Protocol Description Command 33, Controller On (REG_ON) By means of this command the output stage will be switched on. The position reference value will be set to the actual position value that was valid when switching on. The command will also be carried out when there is an error code. The drive will not be moved. The command will only be executed when: SFU_RUN = 1 The command will only be finished when an interferences occurred the output stage is switched on. Command number CMD_BYTE = 33 Condition of call SFU_RUN = 1 Parameters of call SFU_INIT = 0 Return value after the command is finished SFU_ERR = 1 -> error SFU_SB2 = CNC_ERR = 1 -> error code, CNC_ERR = 0 -> message code 10 Profibus Communication FC8x

13 2 Configuration of the PLC (S7) Configuration of the PLC (S7) 2.1 Setup of the Anybus GSD-File. Please refer to the SIMATIC documentation for information on the integration of GSD-files. 2.2 Configuration of an Anybus Participant. Start the hardware configuration (HW Config) of the SIMATIC software. You find the entry ANYBUS-C PDP in the hardware catalog below Additional Field Devices General. Move the entry ANYBUS-C PDP to your fieldbus and define the number of the Profibus. Move the universal module using the drag and drop method in the module list to configure the data. Doubleclick on the universal module to open the configuration so that you can define the data width and direction. FC8x Profibus Communication 11

14 Configuration of the PLC (S7) Set the parameters of the universal module as follows: Parameters Value that must be set I/O type Out- Input Address Depends on your configuration Length 8 Unit Byte Consistent over Total length Confirm the selection by click on OK. The participant is configured now. After the download of the configuration into the PLC, it can be employed. 12 Profibus Communication FC8x

15 3 Anybus Communicator by HMS Anybus Communicator by HMS Detailed information on Anybus Communicator is to find in the HMS user manual ( 3.1 Connectors, Switches and Indicators LED indicators LED no Status Meaning 1 - Online Green Online Off Not online 2 - Offline Red Offline Off Not offline 3 - Not used 4 - Fieldbus Diagnostics Off No diagnostics present Red, flashing 1 Hz Error in configuration Red, flashing 2 Hz Error in user parameter data Red, flashing 4 Hz Error in initialization 5 - Subnet Status Flashing green Running, but one or more transaction errors Green Running Red Transaction error/timeout or subnet stopped 6 - Device Status Off Power off Alternating red/ Invalid or missing configuration green Green Initialization Flashing green Running Red Boot loader mode Flashing red Note the flash sequence pattern and contact the HMS support department. Configuration switches A, B Set the Profibus node address by using the switches as follows: Node address = (switch B 10) + (switch A 1) FC8x Profibus Communication 13

16 Anybus Communicator by HMS Profibus connector Female submin D connector Pin Description Housing Cable shield B-line 4 RTS 5 GND bus 6 +5 V bus out 7 8 A-line 9 Power connector Connector Pin Description V DC 2 GND Notes Use 60/75 or 75 C copper (Cu) wire only. The terminal tightening torque must be between 5 7 lbs-in ( Nm). PC connector (RJ11) RJ11 male connector Pin Description 1 GND 2 GND 3 RS232 Rx 4 RS232 Tx Subnetwork connector Female submin D connector Pin Description Housing Cable shield 1 +5 V output (max. 100 ma) 2 RS232 Rx 3 RS232 Tx 4 5 GND Signal 6 RS422 Rx+ 7 RS422 Rx- 8 RS485+ / RS422 Tx+ 9 RS485- / RS422 Tx- 3.2 Setup Accessories Checklist The following items are required for installation: Anybus Communicator (ABC) for Profibus Anybus Communicator Resource CD (includes configuration software, manuals, GSD file and application notes) 14 Profibus Communication FC8x

17 Anybus Communicator by HMS RS232 configuration cable Subnetwork connector Profibus network cable and connector (not included) Installation and Startup Summary Mount the Anybus Communicator on the DIN rail. Connect the Communicator to the Profibus network. Connect the module to the subnetwork. Turn on the module (+24 V DC). Connect the configuration cable between the module and the PC containing the "Anybus Configuration Manager" software. Configure the module using "Anybus Configuration Manager". Include the Anybus Communicator GSD file in the Profibus configuration tool. Configure and start the Profibus network Technical Specification Mechanical properties Housing Dimensions (L B H) Plastic housing with snap-on connection for DIN-rail IP Code IP mm Electrical characteristics Power supply 24 V DC ±10 % Power consumption max. 280 ma at 24 V (typically around 100 ma) Environmental characteristics Relative humidity 5 95 % non-condensing Temperature Operating: 0 to + 55 C Non operating: -25 to +85 C FC8x Profibus Communication 15

18 Anybus Communicator by HMS 3.3 Functional Description Anybus Communicator for Profibus is a Profibus-DP slave module. The gateway is designed to exchange data between a serial subnetwork and a higher level network. It supports all common baud rates up to 12 Mbit (detected automatically). The I/O data size can be up to 244 bytes in each direction, max. 416 bytes total. In the following example, a temperature regulator on the subnetwork exchanges information with a PLC on the higher level network, via the internal memory buffers in the Anybus Communicator. 16 Profibus Communication FC8x