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DN120 DeviceNet Gateway User`s Manual

1. G Cancel Receive Delimiter Click on current value and enter number in decimal Pad Char Click on current value and enter number in decimal Microscan Systems Inc 51 DN 120 DeviceNet Gateway User 9 Manual Configure DeviceNet Master Scan list After all the object instances have been configured the DeviceNet master can be configured to poll the gateway 1 Before using the RSNetworx to map the gateway s Polled I O connection to 1747 SDN DeviceNet master scanner you must calculate the Poll Produce Size amp Poll Consume Size Chapter 4 describes how to calculate these values 2 Double click on the 1747 SDN icon to open its Properties box You can also left click on the icon to select it right click for the pop up menu and select Properties 1747 SDN Scanner Module General Module Scanlist Input Output Summary f 1747 SDN Scanner Module Name f 747 SDN Scanner Module Description Address o Device Identity Primary Vendor Rockwell Automation Alen Bradey 1 Device Communication Adapter 12 Product 1747 SDN Scanner Module 19 Catalog Tn Revision Dm Cancel Help 3 Select the Scan list tab RSNetworx prompts you for the Scanner Configuration Click Upload to upload current 1747 SDN configuration from the node RSNetworx displays the upload progress Microscan Systems Inc 52 DN 120 DeviceNet Gateway User 9 Manual Scanner Configuration Applet
2. DN 120 DeviceNet Gateway User 9 Manual 8 Click on the Edit I O Parameters button Use the A and v buttons to set Rx Size to the calculated Poll Consume Size value and the Tx Size to the calculated Poll Produce Size value Click Apply to update 1 O parameters Edit UO Parameters 03 DN120 HE T Change of State Cyclic Input Size f Bytes Change of state Gyclic Use Output eit P Input Size f Bytes AY Polled Output Size 7 Bytes Input Size fis al Bytes Heartbeat Rate 250 Zl Output Size fis al Bytes darza Poll Rate Every Scan D Cancel Restore I O Sizes 9 RSNetworx prompts to Automap the new input and output data bytes Select Yes to automap If you select No then you must manually map the I O bytes in the memory tables Scanner Configuration Applet H The changes that have been made result in additional I O data that is not mapped Do you want to Automap this data Scanner Configuration Applet 2 J Do you want to download these changes to the device Microscan Systems Inc 55 DN 120 DeviceNet Gateway User 9 Manual 11 Select the Input tab to view the automapped DN 120 input bytes General Module Scanlist Input Output ADR Summary Polled 16 11 1 0 Unmap SSC y amos 03 DN120 Memory Discrete L StartWord 0 12 Click the Advanced button to view current input mapping detail Change the mapping t
3. 1 The are enough message bytes in Receive Buffer to fill Poll Response RX Message bytes 2 The are not enough message bytes in Receive Buffer to fill Poll Response Unused RX Message bytes input bytes are undefined undefined 3 The are not enough message bytes in Receive Buffer to fill Poll Response Pad bytes RX Message bytes are added after message bytes Pad Bytes 4 The are not enough message bytes in Receive Buffer to fill Poll Response Pad bytes Pad Bytes are added before message bytes RX Message Bytes If configured for Pre Delimiter Block Mode and the Delimiter byte is saved the Pad characters are added either after the last valid message byte right justification or before the Delimiter byte left justification If configured for Post Delimiter Block Mode and the Delimiter byte is saved the Pad characters are added either before the first valid message byte left justification or after the last valid message byte but before the Delimiter byte right justification Re sending Received Data The DN120 gateway can be configured to return received message bytes only once in a Poll Response message and return no data null value in subsequent Poll Response messages until new message bytes are received For the Short_String data type a null value consists of the length byte 0 For the Byte Array data type a null value consists of no data The gateway can also be configured to always return received message
4. 59 EXAMPLE 2 RECEIVING PRE DELIMITED Data 61 BArEOdESCANN CR otk A A Is oi DNI2O Gate Wai eGR REAM sin eee OA Mtns Ne HRN isin AE EE eet 61 EXAMPLE 3 RECEIVING POST DELIMITED Data 63 EE 63 E EE 63 EXAMPLE 4 TRANSMITTING FIXED LENGTH Data 65 BAarCodesSCanner taa as os e Nits ocd ce iO EE 65 DN 120 EE 65 EXAMPLE 5 TRANSMITTING VARIABLE LENGTH DATA 67 bap Codaescanner a et ooo 0 ES EE 67 E ER 67 CHAPTER 8 TROUBLESHOOTING ain icccsssessssssessescessssescesessssssvecseeceseccsossc ssusenssesedacsasunsccssuseesesssces ocstesbescesessans 68 APPENDIX A PRODUCT SPECIFICATIONG ssssscssssssscssssccccssscccssssscccsssscccessseccesssccccsssacccessceccessecccssnees 69 DEVICENET INTERFACES EE 69 SERIAL CHANNEL BEEN 69 ENVIRONMENTAL occccccccncncnononcncnnnononononononono nono nn nn nn nn nn nn nn nn nn nn nn nn nn nn nn nen nro nn E E EEE TRE 69 APPENDIX B DEVICENET TEMPLATE cssscccssssscesssscccssssccccssccccssssccccsscsccccssccscesseccccssnsccccssscccsssescccssnees 70 APPENDIX C ASCH CHARACTER CODESuu ccssssscsssssccsscsccccssscccssnsccccssssccscssceecessccccssssccscssceecessssccesnees 71 Microscan Systems Inc 3 DN120 DeviceNet Gateway User Manual Chapter 1 Overview This document describes how to install configure and operate the DN120 series of serial to DeviceNet gateways The following products are covered in this user manual Part Number Serial Channel DN120 RS232
5. Do you want to upload the configuration from the device updating the software s configuration or download the software s configuration to the device updating the device For more information press F1 Upload Download Uploading from Scanner Uploading Scanlist Node 4 4 The next window shows the Available Devices that can be added to the 1747 SDN Scanlist General Module Scanlist l Input Output ADR Summary Available Devices Scanlist 03 DN120 E gt gt lt lt M Automap on Add E Node Active Electronic Key Upload from Scanner I Device Type E Endor Download to Scanner l PreductC ode E Mejor Revision Editi O Parameters F Miner T orhigher OK Cancel Apply Help 5 Select the Automap on Add checkbox if you want RSNetworx to automatically map the DN120 input and output bytes into the 1747 SDN memory Microscan Systems Inc 53 DN 120 DeviceNet Gateway User 9 Manual 6 Select the DN 120 under Available Devices and click the gt button to transfer to Scanlist General Module Scanlist l Input Output ADR Summary Available Devices Scaniist 6 03 DN120 DH ER lt lt Y Automap on Add Y Node Active Electronic Key Upload from Scanner E Device Type M Vendor Download to Scanner J Eada Cl M Major Revision Edit I O Parameters di E orhigher Microscan Systems Inc
6. Indefinite 7 9 Volts unloaded typical 0 C to 70 C 25 C to 85 C 3 25 x 2 37 x 1 08 0 5 tabs 3 16 diameter mounting holes RTV Silicon Compound 69 DN120 DeviceNet Gateway User Manual Appendix B DeviceNet Template Attribute Default Setting Microscan Systems Inc 70 DN120 DeviceNet Gateway User Manual Appendix C ASCII Character Codes REES 0x00 0 NUL Null Ctrl 0x20 Space 0x40 0x60 0x01 1 SOH Start of heading Ctrl A 0x21 0x41 S A 0x61 e a 0x02 2 STX Start of text Ctrl B 0x22 34 N 0x42 66 B 0x62 98 b 0x03 3 ETX End of text Ctrl C 0x23 35 0x43 67 C 0x63 99 C 0x04 4 EOT End of transmit Ctrl D 0x24 36 0x44 68 D 0x64 100 d 0x05 5 ENQ Enquiry Ctrl E 0x25 37 0x45 69 E 0x65 101 e 0x06 6 ACK Acknowledge Ctrl F 0x26 38 8 0x46 70 F 0x66 102 f 0x07 7 BEL Bell CtrlG 0x27 39 0x47 71 G 0x67 103 g 0x08 8 BS Backspace Ctrl H 0x28 40 0x48 72 H 0x68 104 h 0x09 9 HT Horizontal tab Ctrl 0x29 41 0x49 73 l 0x69 105 i Ox0A 10 LE Line feed Ctrl J 0x2A 42 R 0x4A 74 J Ox6A 106 j 0x0B 11 VT Vertical tab Ctrl K 0x2B 43 0x4B 75 K 0x6B 107 k 0x0C 12 FE Form feed CtrlL 0x2C 44 0x4C 76 L 0x6C 108 0x0D 13 CH Carriage return Ctrl M 0x2D 45 0x4D 77 M Ox6D 109 m Ox0E 14 SO Shift out Ctrl N Ox2E 46 0x4E 78 N Ox6E 110 n 0x0F 15 SI Shift in CtrlO 0x2F 47 0x4F 79 O Ox6F 111 0 0x10 16 DLE Data line escape Ctrl P 0x30 48 0 0x50 80 P 0x70 112 p 0x11 17 DC1 D
7. Scanner module 120 240VAC 1747 L524 1747 SDN 1746 1V8 EA Gomm IC Comm PC Interface To PC RS232 25 Module Pin Serial Interface 1747 PIC For Used with RS232 PLC RSLogic Prog to pin 5 DeviceNet connector RS232 serial communication to pin 1 DeviceNet connector To PC RS232 9 pin PC Interface Mod Serial Interface For y DIP790 Device Used with RSLinx Net Dist Board_ amp RSNetWorx Prog q et DeviceNet Terminal Connector 9 pin DIN RS232 Serial Gateway Module y DNI20 Ab V BUS Interface to Barcode 1 Reader Scanner RS232 DeviceNet blue data low CAN L Weigh Scale or etc shield Drain data high CAN H i V BUS DeviceNet DeviceNet Connector shield Drain Male Connector V BUS data high CAN H data low CAN L Pin 1 4 6 9 are unused Figure 1 DN120 Integrated with Allen Bradley SLC500 Microscan Systems Inc 36 DN 120 DeviceNet Gateway User e Manual Configure DeviceNet Interface Follow instructions in Chapter 4 to set the gateway s rotary switches to 125Kbps baud rate and MAC ID to 03 Set the RS232 Baud Rate switch to PRG mode Connect the gateway to the DeviceNet network to power it up During power up the NET and MOD LEDs cycle through a sequence of alternating red and green After power up the NET LED should be flashing green and the MOD LED should be solid green Connect amp Register E
8. application program The application processes the received input data from the gateway and writes new output data to the DeviceNet master which sends them to the gateway The Polled I O data exchange typically occurs at a faster rate than the serial transmit and receive operation because the DeviceNet baud rate is much greater than the serial channel baud rate The DN120 has transmit and receive buffers to handle the slower serial processes The gateway also provides synchronization features to ensure delivery of received messages to the application program and transmission of application messages out the serial channel Invut File Inputs eS A DeviceNet Poll Response l lt input data 4 Receive oo Message Packet Outputs Output File Se e S gt DeviceNet Poll Comman E output data Transmit eege Message Packet DeviceNet Master lt Serial Application Device Program DN120 Gateway DeviceNet network Microscan Systems Inc 9 DN 120 DeviceNet Gateway User e Manual The DN120 configuration defines the number of output bytes in a Poll Command message and the number of input bytes in a Poll Response message Each Poll Command and Poll Response message can contain up to 2 overhead bytes for DN120 status and data synchronization information The remaining bytes contain output data to be transmitted out the serial channel or input data received by the serial channel The following diagram sho
9. 1 Microscan Systems Inc 46 DN 120 DeviceNet Gateway User 9 Manual 5 Left click on the DN 20 icon to select it Right click and select Properties from the pop up menu You can also double click on the DN120 icon to open its properties box DeviceNet RSNetWorx for DeviceNet File Edit View Network Device Diagnostics Tools Help ER Bls Hlal Tel ale EIJ mE 1747 SDN 1770 KFD DN120 Scanner RS232 de cl de Lenken fen e e 5 gt 6 v 00 05 g Cory Eie amp Paste ula Delete Del Upload from Device Download to Device Class Instance Editor Properties Master Slave Configuration Message Code Date Description DNET 0101 8 30 02 6 50 38 Mode changed to online The online path is APPSTEST 770 KFD 1 Display the property page forthe selected device Online Not Browsing Start 2F Devicenet RS Z untitled Paint NA 6 52 AM 6 RSNetworx displaces the following text box while is reads DN120 EDS file Werifying Identity of Address 03 DN120 Microscan Systems Inc 47 DN 120 DeviceNet Gateway User s Manual 7 The DN120 Properties Box is displayed DN120 8 Select the Parameters tab You will be prompted for the parameters source Select the Upload button to upload DN120 parameters from the actual device All the DN120 parameters are now shown in the Properties window EDS Editor Do
10. 1 byte length or a Byte Array no length byte The number of bytes in an RX Message string can be less than or equal to the Maximum Receive Size but never larger When the number is less the remaining Poll Response input bytes are either padded or undefined In Stream Mode the gateway will always try to fill Poll Response message with bytes from the Receive Buffer The only time the RX Message size is less than the Maximum Receive Size is when there are no more bytes in the Receive Buffer In Block Mode the gateway will not return any data in a Poll Response message unless it has a complete serial message saved in the Receive Buffer If the message sizes are small the gateway may have several messages saved in the Receive Buffer depending upon how fast the DeviceNet master polls the gateway for data The messages are returned one at a time in a Poll Response message regardless of their size If the message is large then it is returned in multiple Poll Response messages Padding Message Data Microscan Systems Inc 13 DN 120 DeviceNet Gateway User e Manual If the number of RX Message bytes currently in the Receive Buffer is less than the Maximum Receive Size number then the remaining input bytes are undefined The gateway can optionally fill the unused input bytes with a Pad character The Pad characters can be added at the beginning or end of the message Poll Response Message Data Receive Sequence Number other input bytes
11. 10 Flow Control 1 0x40 0x01 Ox0A 0x01 1 XON XOFF 14 Data Format 00000000 0x40 0x01 Ox0E 0x00 String Format Byte Array 15 Block Mode 00010000 0x40 0x01 OxOF 0x10 Transmit Sequence Number enabled 18 Max Transmit Size 25 0x40 0x01 0x12 0x19 Fixed message size of 25 bytes The gateway will transmit 25 output bytes received in a Poll Command Message The Status Clear byte is not enabled The Transmit Sequence Number is enabled The Length Byte is not enabled Byte Array format The Poll Consume Size can now be calculated for this DN120 configuration Status Clear byte 0 Transmit Sequence Number byte 1 Short_String length byte 0 Maximum Receive Size 25 Poll Produce Size 26 Microscan Systems Inc 65 DN 120 DeviceNet Gateway User e Manual The format of the Poll Command Message output bytes is as follows Transmit Sequence Number message data 1 byte 25 bytes The gateway always receives 26 output bytes in the Poll Command Message It will not transmit a new serial message until the Transmit Sequence Number received in the Poll Command is different than the number received in a previous Poll Command The application should increment the Transmit Sequence Number when it sends new output byte values in the Poll Command Message to enable the transmission of the new message Microscan Systems Inc 66 DN 120 DeviceNet Gateway User e Manual Example 5 Transmitting Variable Length Data Same configuration as Example
12. 4 except the text message string can be from 1 to 25 characters long including ASCII control characters Bar Code Scanner The bar code scanner e RS232 channel is set for 9600 bps 7 data bits even parity and 1 stop bit DN 120 Gateway The DN 120 serial channel is configured to transmit this RS232 message format A string format will be Short_String since the message size is variable The Maximum Transmit Size is 25 since the largest text message contains 25 characters The Serial Stream Object attributes are shown below for this application The 3rd column lists the address string if using Set_Attribute_Single commands to write the attribute values Serial Stream Object Configuration Class Code 64 or 0x40 Attribute Data Class Instance Attribute Data Description 6 Baud Rate 5 0x40 0x01 0x06 0x05 5 300 bps 7 Parity 1 0x40 0x01 0x07 0x01 1 Even parity 10 Flow Control 1 0x40 0x01 Ox0A 0x01 1 XON XOFF 14 Data Format 00000001 0x40 0x01 Ox0E 0x01 String Format Short_String 15 Block Mode 00000000 0x40 0x01 OxOF 0x00 Transmit Sequence Number disabled 18 Max Transmit Size 25 0x40 0x01 0x12 0x19 Fixed message size of 25 bytes The gateway will transmit the output bytes received in a Poll Command Message The Status Clear byte is not enabled The Transmit Sequence Number is not enabled The Length Byte is enabled Short_String format The Poll Consume Size can now be calculated for this DN120 configuration Sta
13. Data because the Maximum Receive Size is set to 15 and the data format is Short String add 1 for length byte The Status byte is not enabled The Receive Sequence Number byte is enabled The Poll Produce Size can now be calculated for this DN120 configuration Status byte 0 Receive Sequence Number byte 1 Short_String length byte 1 Maximum Receive Size 15 Poll Produce Size 17 Microscan Systems Inc 61 DN 120 DeviceNet Gateway User e Manual The format of the Poll Response Message input bytes is as follows Receive Sequence Number Short_String length Short_String data Pad bytes 1 byte 1 byte 0 15 bytes The gateway always returns 17 input bytes in the Poll Response Message even if the scanned barcode data contains fewer bytes The application should check the Short_String length byte to determine the number of valid data bytes being returned in a particular Poll Response Message The remaining input bytes have undefined values The gateway will always return the last received Short_String data in its Poll Response Message The gateway increments the Receive Sequence Number when new Short_String data is returned The application can use the Receive Sequence Number to determine if the Short_String data is new or old information The Barcode Scanner sends the following 8 byte serial message when it reads a UPC label printed with 1234567 ASCII numbers 0x02 0x31 0x32 0x33 0x34 0x35 0x36 0x37 The gateway
14. Microscan Systems Inc 64 DN 120 DeviceNet Gateway User 9 Manual Example 4 Transmitting Fixed Length Data Print an ASCH string from a PLC to a bar code scanner using a DN120 gateway and a DeviceNet scanner master The text message string is always 25 characters long including any ASCII control characters The bar code scanner RS232 channel is connected to a DN120 serial channel The DN120 DeviceNet channel is connected to the PLC DeviceNet scanner The DeviceNet network is powered by an external 24VDC power supply PLC amp DeviceNet Scanner DN120 Bar Code Scanner Gateway Power DeviceNet network Bar Code Scanner The bar code scanner s RS232 channel is set for 9600 bps 7 data bits even parity and 1 stop bit DN120 Gateway The DN120 serial channel is configured to transmit this RS232 message format A string format will be Byte Array since the message size is fixed Transmit Sequence Numbers will be used to signal a new message to transmit The Maximum Transmit Size is 25 which is the number of message bytes The Serial Stream Object attributes are shown below for this application The 3rd column lists the address string if using Set_Attribute_Single commands to write the attribute values Serial Stream Object Configuration Class Code 64 or 0x40 Attribute Data Class Instance Attribute Data Description 6 Baud Rate 5 0x40 0x01 0x06 0x05 5 300 bps 7 Parity 1 0x40 0x01 0x07 0x01 1 Even parity
15. Mode is enabled Bit 0 selects Pre Delimiter Mode set 0 or Post Delimiter Mode set 1 This bit is only used when Block Mode is enabled Delimiter Byte value used to indicate the start of a new message Pre Delimiter Mode or the end of a received message Post Delimiter Mode This attribute is only used in Block Mode Pad Character Byte value used to pad the RX Message bytes Maximum Transmit Size Defines the maximum size of TX Message output bytes or the maximum number of data bytes to be transmitted across the RS232 channel from one Poll Command message Idle String Defines the byte string that is transmitted when the gateway receives a null Poll no input bytes or a Short_String value with length 0 Enter the byte string in Short_String data Microscan Systems Inc 24 DN 120 DeviceNet Gateway User e Manual format with 1 byte string length Set the length byte to 0 if you don t want to transmit an Idle String The Idle String can be from 0 to 16 bytes long not counting Short_String length byte Example Idle String is 0x01 0x41 where string length is 1 and data byte is 0x41 A You must use the RSNetworx Class Instance Editor Set Attribute Single command to write a Short_String attribute value Fault String Defines the byte string that is transmitted when the gateway s connection to the DeviceNet master times out Enter the byte string in Short_String data format with 1
16. Stream Object for I O Message 9 Get Set Expected Packet Rate UINT Default 2500 msec 12 Get Set Timeout Action USINT 0 Timeout Explicit Message default 1 Auto Delete 2 Auto Reset I O Message default 13 Get Production Path Length USINT 0 for Explicit Message 6 for I O Message 14 Get Production Path STRUCT of Null for Explicit Message STRUCT for I O Message 0x2 Class Number USINT 0x04 Log Seg Instance _ USINT Instance Number USINT 0x01 Log Seg Atribute USINT Attribute Number Var x03 15 Get Consumed Path Length USINT O for Explicit Message 6 for I O Message Microscan Systems Inc 32 Log Seg Class USINT DN120 DeviceNet Gateway User Manual 16 Get Consumed Path STRUCT of Null for Explicit Message STRUCT for I O Message Log Seg Class USINT Class Set USINT Production Inhibit Common Services uNT p SSCS Service Code Class Instance Service Name 05 0x05 Yes Yes Reset 14 0x0E Yes Yes Get_Attribute_Single 16 0x10 No Yes Set_Attribute_Single Microscan Systems Inc 33 DN120 DeviceNet Gateway User Manual SERIAL STREAM OBJECT The Serial Stream Object configures the DN120 serial channel erial Stream Object Class Code 64 0x40 Class Access Name Type Value Attribute Pe Get las Meier ort JA 7 oa Mas Instance aa JUINT PE Instance Access Name Type Value Attribute Received message data Returned in Poll Response
17. bytes The gateway always returns 16 input bytes in the Poll Response Message even if the scanned barcode data contains fewer bytes or if a new barcode message has not been received The gateway returns new message data only once and returns a null data string if there is no new message data The application should use the Short_String length byte to determine if a new message is being returned A length greater than zero indicates the number of valid data bytes new message data A length of 0 indicates no valid data bytes no new message The Barcode Scanner sends the following 6 byte serial message when it reads a UPC label printed with 12345 ASCII numbers 0x31 0x32 0x33 0x34 0x35 0x03 The gateway generates the following Poll Response Message in response to the first Poll Command Message after its receives the Barcode message The Status Byte is Ox0A indicating no transmit or receive errors an empty Transmit Buffer and an empty Receive Buffer The Delimiter is stripped so the Short_String length is 5 There are 5 valid data bytes and the remaining 10 input bytes are undefined 0x31 0x32 0x33 0x34 0x35 XX XX XX XK XX XX XX XX XK XX The gateway generates the following Poll Response Message in response to subsequent Poll Command Messages until it receives another Barcode message The Short_String length is 0 indicating a null data string The 15 other input bytes are undefined XX XX XX XK XX XX XX XX XX XX XX XX XX XX XX
18. bytes in Transmit Buffer Any write clears buffer USINT Defines the maximum bytes returned by RX Message read e Z 4 Data Format Bit 0 String Format 0 Short_String 1 Byte Array Bit 1 Strip Parity Bits 0 retain 1 strip Bit 2 Pad Justification 0 left justify 1 right justify Bit 3 Pad Received Message 0 no 1 yes Block Mode USINT Bit 0 Pre Post Delimiter 0 pre delimiter 1 post delimiter Bit 1 Strip Delimiter 0 keep delimiter 1 strip delimiter Bit 2 Delimiter Enable 0 no 1 yes Bit 3 Enable Receive Sequence Number 0 no yes Bit 4 Enable Transmit Sequence Number 0 no 1 yes Bit 5 Re send 0 no yes Bit 6 Synchronization 0 no 1 handshake protocol USINT Delimiter byte value Pad Character R Pad byte value USINT Defines the maximum bytes that can be transmitted Idle String Short_String 1 16 byte string transmitted when gateway receives a null Poll no input bytes Short_String length 0 for no Idle String Microscan Systems Inc 21 USINT Number of bytes in Receive Buffer Any write clears buffer U i S x gt DN 120 DeviceNet Gateway User e Manual 20 Fault String Short_String 1 16 byte string transmitted when gateway s Polled I O connection times out Short_String length 0 for no Fault String Status Enable USINT Set to any nonzero value to enable Status input byte
19. registering then this image will be associated with the device To perform an installation test on the file s click Next lt Back Next gt Cancel 7 The next screen shows the RSNetworx installation test results Click View file to view the actual EDS file text Click Next gt to continue Rockwell Software s EDS Wizard EDS File Installation Test Results file validity a i Installation Test Results o A c dn120r9 eds Wiew file Microscan Systems Inc 40 DN 120 DeviceNet Gateway User e Manual 8 The next screen allows you to customize the gateway s icon for RSNetworx Click on Change icon Rockwell Software s EDS Wizard Change Graphic Image You can change the graphic image that is associated with a device Product Types Change icon g Communication Adapter 9 The Change Icon screen pops up Click Browse to enter path for DN120 icon file You can download the icon file from www microscan com Change Icon Microscan Systems Inc 41 DN 120 DeviceNet Gateway User s Manual 10 Enter the path to DN120 icon file in the File name box Click Open to continue DN120 ico Icon Files ico hwx dll lt 11 The DN120 icon should have changed to the proper icon Click Next to continue Rockwell Software s EDS Wizard Change Graphic Image You can change the graphic image thatis associated with a devi
20. this attribute forces counter value to zero 5 Allocation Information STRUCT of tee ee ee ee O l Choice Byte BYTE bit O explicit msg set to 1 to allocate bit 1 polled IO set to 1 to allocate bit 2 strobed IO not supported bits 3 7 reserved set to 0 Master Node Address USINT Allocated to this DeviceNet master Common Services Service Code Class Instance Service Name 14 0x0E Yes Yes Get_Attribute_Single 16 0x10 No Yes Set_Attribute_Single 75 0x4B No Yes Allocate Master Slave 76 0x4C No Yes Release Master Slave Microscan Systems Inc 30 DN120 DeviceNet Gateway User Manual ASSEMBLY OBJECT The Assembly Object instances bind attributes of multiple objects to allow data to or from each object to be sent or received over a single connection Assembly Object Class Code 04 0x04 Class Access Name Type Value Attribute 1 oea revision ONT t 2 Attribute 3 Instance 1 for input data stream Instance 2 for output data stream Common Services Service Code Class Instance Service Name 14 0x0E Yes Yes Get_Attribute_Single 16 0x10 No Yes Set_Attribute_Single Instance 1 Input Data Stream and Instance 2 Output Data Stream are structured as either an array of bytes or as a Short_String consisting of a single byte length field and N data bytes The Input Data Stream is the data returned in the Poll Response Message The Output Data St
21. transmits bytes sent as output data from the DeviceNet master out its serial channel The following diagram shows the major gateway components DC DC Power Conversion e 24VDC DeviceNet power input DeviceNet Poll Command VDC for Core amp DeviceNet channel e isolated VDC for serial channel output data Male DB9 connector 5 pin male mito connector Gateway Core K lt microcontroller e RAM serial we e Flash ROM messages DeviceNet Poll Response DeviceNet Channel Serial Channel input data e 24VDC power communications communications e flow control DeviceNet Object Serial Stream Object or Rotary Switches Configures the DeviceNet Configures the serial channel interface baud rate and Receives and transmits serial MAC ID adaress messages Controls optional synchronization DeviceNet Object Model The DeviceNet Specification defines an Object Model that consists of Objects and Attributes An Object is a predefined software process and an Object Attribute is a data value used or generated by that process An Object Instance is one occurrence of an Object operating on its unique set of Attribute values The DN120 gateway has six different Object Classes or types Five are standard objects defined by the DeviceNet Specification Identity Router DeviceNet Assembly Connection One is a device specific object defined for the DN120 gateway Serial Stream The S
22. you want to upload the configuration from the device updating the op software s configuration or download the software s configuration to the device updating the device For more information press F1 Upload Download Microscan Systems Inc 48 DN 120 DeviceNet Gateway User 9 Manual 2 DN120 El ES General Parameters 1 0 Data EDS File Select the parameter that you wantto configure and initiate an action using the toolbar Groups E a an Monitor ES mm efParsmeter Curentvalue Status 00001010 Baud Rate 9600 baud Parity Even parity Data Size 7 Stop bit 1 Flow control No flow control Receive count 0 Transmit count D Maximum receive size 14 oon GH G L G M zb Maximum Transmit size 14 Data format 2291010 Block Mode 1111100 Receive Delimiter 13 Pad Char 32 Status Enable 0 Status Clear Enable D 9 You may now edit the Serial Stream Object attributes in this window Note that the Idle String and Fault String attributes are not listed These attributes use Short_String data type which is not supported by RSNetworx EDS File interface 10 Use the Class Instance Editor to configure Short_String attributes DeyiceNet RSNetWonx for DeviceNet Eile Edit View Network Device Diagnostics Tools Help ae H i Bey eale Fea ln 1747 SDN 1770 KFD Scanner RS232 LEIWEN Leben wf en e an Cut Ctr X 00 05 Copy Ctrl C F Paste Cla Delete Del Upload from D
23. 0 indicates no valid data bytes no new message The Barcode Scanner sends the following 5 byte serial message when it reads a UPC label printed with 12345 ASCII numbers 0x31 0x32 0x33 0x34 0x35 The gateway generates the following Poll Response Message in response to the first Poll Command Message after its receives the Barcode message The Short_String length is 5 since 5 bytes were received 0x05 0x31 0x32 0x33 0x34 0x35 The gateway generates the following Poll Response Message in response to subsequent Poll Command Messages until it receives another Barcode message The Short_String length is 0 indicating a null data string The 5 data bytes are undefined 0x00 XX XX XX XX XX Microscan Systems Inc 60 DN 120 DeviceNet Gateway User e Manual Example 2 Receiving Pre Delimited Data Same configuration as Example 1 Barcode Scanner The barcode scanner RS232 channel is set for 9600 bps 8 data bits no parity and 1 stop bit When it reads a UPC label it transmits following ASCII message format The message always begins with the ASCH STX start of text 0x02 character The barcode data will consist of a variable number of 1 to 14 ASCII characters depending upon the UPC label being scanned It will not transmit a 0x02 in the barcode data field STX ASCII barcode data DN120 Gateway The receive mode will be Pre Delimiter Mode because the barcode messages always begin with the same character The
24. 0x44 Microscan Systems Inc 12 DN 120 DeviceNet Gateway User e Manual Pre Delimiter Mode 0x31 0x32 0x32 0x42 0x45 0x02 0x42 0x43 0x44 Delimiter 0x02 Delimiter Message Bytes Delimiter Message Bytes The Post Delimiter Block Mode configuration expects the Delimiter at the end of a message The gateway saves all received bytes in the Receive Buffer until a Delimiter is received In this mode the maximum number of bytes in a single message is limited by the Receive Buffer size 64 bytes not the Maximum Receive Size attribute Incoming data stream 0x45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x02 0x42 0x43 0x44 Post Delimiter Mode 0x45 0x62 0x02 0x31 0x32 0x32f 0x42 0x45 0x02 0x42 0x43 0x44 Delimiter 0x02 Message Bytes Delimiter Message Bytes Delimiter Message Bytes Returning Received Data When the gateway receives a Poll Command message it removes some or all of the bytes currently in the Receive Buffer and returns them as input bytes in a Poll Response message The Maximum Receive Size attribute defines the maximum number of bytes that can be returned in a single Poll Response message If the Receive Buffer contains more bytes than can fit into one Poll Response message the remaining bytes are returned in subsequent Poll Response messages RX Message is the string of valid message bytes returned in a single Poll Response message The RX Message byte string can be formatted as either a Short_String byte array with
25. 4 Get Set Transmit Data Data Format Message data to transmit Received in Poll Command 5 Get Set Status USINT Bit 0 Transmit Channel Blocked Bit 1 Transmit Buffer Empty Bit 2 Receive Parity Error 0 to clear Bit 3 Receive Buffer Empty Bit 4 Receive Buffer Overflow Error 0 to clear Bit 5 Framing Error 0 to clear Bit 6 Transmit Buffer Overflow Error 0 to clear Bit 7 CTS Signal State 1 asserted Get Set Baud Rate USINT 0 9600 bps 4 600 bps 1 4800 bps 5 300 bps 2 2400 bps 6 19200 bps 3 1200 bps Get Set Parity USINT 0 no parity 5 mark force to 1 1 even parity 6 space force to 0 2 odd parity 8 Get DataSize Just Dag enabled or 8 no parity 2 Get Jaen pr USINT 10 Get Set Flow Control USINT 0 none 2 CTS RTS 1 XON XOFF 4 CTS Detect Mode Receive Count USINT Number of bytes in Receive Buffer Write to clear USINT Number of bytes in Transmit Buffer Write to clear Maximum Receive Size USINT Maximum bytes returned by Receive Buffer read 14 Get Set Data Format USINT Bit 0 String Format 0 Short_String 1 Array Bit 1 Strip Parity Bits 0 retain 1 strip Bit 2 Pad Justification 0 left 1 right Bit 3 Pad Received Message 0 no yes 15 Get Set Block Mode USINT Bit 0 Pre Post Delimiter 0 Pre 1 Post Bit 1 Strip Delimiter 0 keep 1 strip Bit 2 Delimiter Enable 0 no 1
26. Class Instance Service Name 05 0x05 No Yes Reset 14 0x0E Yes Yes Get_Attribute_Single Microscan Systems Inc 28 DN120 DeviceNet Gateway User Manual ROUTER OBJECT The Message Router Object provides a messaging connection point through which a Client may address a service to any object class or instance residing in the DN120 device Router Object Class Code 02 0x02 Class Access Name Type Value Attribute Pt Le Reiso HT e Se Max Class Identifier Dr Max Instance Attribute UINT Instance Access Name Type Value Attribute 2 Ga Number of Connections UINT Common Services Service Code Class Instance Service Name 14 Ox0E Yes Yes Get_Attribute_Single Microscan Systems Inc DN120 DeviceNet Gateway User Manual DEVICENET OBJECT The DeviceNet Object contains information about the DN120 DeviceNet interface configuration DeviceNet Object Class Code 03 0x03 Class Access Name Type Value Attribute UNT Instance Access Name Type Value Attribute 1 Get Set MAC ID USINT Settable only if MAC ID switches gt 63 Valid numbers are 0 to 63 Returns last value set or switch value 2 Get Set Baud Rate USINT Settable only if Baud switch gt 2 Valid settings are O 125K 1 250K 2 500K Returns last value set or switch value 3 Get Set Bus Off Interrupt BOOL 0 hold CAN in OFF state default 1 reset CAN Bus Off Counter USINT Writing
27. DN120 MAC ID DeviceNet Class Services The DN120 is a Group 2 Slave Device that supports the following class services and instance services SERVICE CODE SERVICE NAME 05 0 05 14 0x0E Get Attribute Single 16 0x10 Set Attribute Single 75 0x4B Allocate Group 2 Identifier Set 76 0x4C Release Group 2 Identifier Set DeviceNet Object Classes The DN 120 device supports the following DeviceNet object classes CLASS CODE OBJECT TYPE 01 0x01 Identity 02 0x02 Router 03 0x03 DeviceNet 04 0x04 Assembly 05 0x05 Connection 64 0x40 Serial Stream Object Microscan Systems Inc 27 DN120 DeviceNet Gateway User Manual IDENTITY OBJECT The Identity Object is required on all DeviceNet devices It provides product identification and general information Identity Object Class Code 01 0x01 Class Access Name Type Value Attribute e Get_ Max Chass entifier onr pO OOS Instance Access Name Attribute SE ae Ger Boite rale EEGENEN Minor Revision 1 O 5 Get Device Status WORD Bit 0 owned 0 available 1 allocated Bit 2 configured 0 no 1 yes Bit 4 7 vendor specific 0 Bit 8 minor configuration fault Bit 9 minor device fault Bit 10 major configuration fault Bit 11 major device fault Bit 1 3 12 15 reserved 0 e j oe Eine t Unigu ei number or eve dove a a Teen Dm KE Name STRING SCS Common Services Service Code
28. DS File 1 Start up the RSNetworx program Select the Online operation from the Network menu DeviceNet RSNetWorx for DeviceNet Ona File Edit View Network Device Tools Help ER KE H A E M Graph Spreadsheet Master Sle xl Message Code Description D Messages Togale the online state of the network Offline Microscan Systems Inc 37 DN 120 DeviceNet Gateway User e Manual 2 The following Browse for network text box should Showing the networks connected to your computer Select a communications path to the desired network Iw Autobrowse Workstation MDSIMS1 Ze Linx Gateways Ethernet Zx 1770 KFD 1 DeviceNet 3 Click on the 1770 KFD 1 to show all connected DeviceNet devices The gateway is at MAC ID 03 verifying its DeviceNet connection It is an Unrecognized Device until the gateway s EDS file is registered with RSNetworx Browse for network B Selecta communications path to the desired network Y Autobrowse El Workstation APPSTEST IN H 00 1747 SDN Scanner Module 03 Unrecognized Device 05 Workstation APPSTEST 35 AB_DF1 1 DH 485 Microscan Systems Inc 38 DN 120 DeviceNet Gateway User 9 Manual 4 Click Cancel to close Browse for network window Select the EDS Wizard operation from the Tools menu Click Next gt to continue Rockwell Software s EDS
29. Delimiter is 0x02 STX The Maximum Receive Size is 15 because the largest message contains 1 STX byte and 14 ASCII bytes The received bytes will be returned as a Short_String An ASCII NUL Pad character 0x00 will be added at the end of the message if needed The gateway will always return the data bytes in the Poll Response Message The Receive Sequence Number will be used to indicate when a new message is returned The Serial Stream Object can now be configured The following shows the Serial Stream Object attribute settings for this application The 3rd column lists the address string if using Set_Attribute_Single commands to write the attribute values Serial Stream Object Configuration Class Code 64 or 0x40 Attribute Data Class Instance Attribute Data Description 6 Baud Rate 0 0x40 0x01 0x06 0x00 0 9600 bps 7 Parity 0 0x40 0x01 0x07 0x00 0 no parity 10 Flow Control 2 0x40 0x01 Ox0A 0x02 2 CTS RTS 13 Max Receive Size 15 0x40 0x01 0x0D Ox0F Receive messages up to 15 bytes 14 Data Format 00001101 0x40 0x01 Ox0E 0x0D Pad receive message Pad justification right end of msg String Format Short_String 15 Block Mode 00101101 0x40 0x01 Ox0F 0x2D Re send enabled Receive Sequence Number enabled Delimiter enabled Pre Delimiter 16 Delimiter STX 0x40 0x01 0x10 0x02 0x02 ASCII STX character 17 Pad Character NUL 0x40 0x01 0x11 0x00 0x00 ASCII NUL character The gateway will return up to 16 bytes of Receive
30. MICROSCAN DN120 DeviceNet Gateway User s Manual MICROSCAN PN 83 210010 Rev B DN 120 DeviceNet Gateway User e Manual Table of Contents CHAPTER 1 OVERVIEW EE 4 CHAPTER 2 INSTALLATION csccccccsssesccecssscnccscssessnsssesecssscncsscsseceessecsessscceesesssscnessssseceecsessesssccecsessseseesoess 5 MOUNT Ta BEGE EEE EEN E E SE E EE A HoT a 222 2 5 ANINE E EOE ee E 6 DeviceNet Interfaces aoii enken E a aa 6 Serial RE 6 Wiring Examples as 7 CHAPTER 3 THEORY OF OPERATION szg eda aaya g 2 Teayers iant dTa s aeaaee drai soote Toigegstis 8 GATEWAY OPERATION ee EE EE 8 DeviceNet Object Model a tirita DeviceNet Interface aiii wot EE OV A ASA E EE sbasdag aA OA OE A NEEE ATS 9 Serial RE 10 Asynchronous Serial Communication sss sees sss es sees esse ee esse eee essere 11 Status InfoMine Receiving Messages Stream Mode Block Mode Returning Received Data Padding Message Data eds Re sendine Received Data li Transmitting Messages Synchronization eee Receive Sequence Number Transmit Sequence Number Synchronous Handshake Protocol CHAPTER 4 GATEWAY CONFIGURATION scssscsssscssscssssscssssssssscnscsssssscnscsssssscnssssssescnsssssasssssssssescess 18 CONFIGURE DEVICENET INTERFACE moneen a a a N r E OER E Gd ra EEN Rd 18 DeviceNet baud Rate reese de n e de edd dd 18 MAC TD EEN 18 Serial Channel Baud Rate Option Switch sss esse eee eenn 19 POWER UPGATEWAS seins eege E
31. Status Clear Enable USINT Set to any nonzero value to enable Status Clear output byte USINT 24 Option Switch USINT Receive Data Data from the last valid message packet Receive Data includes the Status and Receive Sequence Number bytes if enabled and the RX Message bytes The RX Message format is either Short_String or Byte Array defined by Data Format attribute If no message data is available the RX Message will be a null packet or Short_String with length 0 Receive Data is returned in the DeviceNet Poll Response Message Receive Data Receive Sequence Number RX Message Data Format Data Format XXXXXXx0 XXXXXxx 1 Short_String data bytes Byte Array data bytes Transmit Data Data to transmit out the serial channel by the gateway Transmit Data includes the Status Clear and Transmit Sequence Number bytes if enabled and the TX Message bytes Format is either Short_String or Byte Array defined by Data Format attribute Transmit Data is typically received in the DeviceNet Poll Command Message Reading Transmit Data returns the last byte in the Transmit Buffer Transmit Data Data Format Data Format XXXXXXX0 XXXXXXxl Short_String data bytes Byte Array data bytes Status Contains bit mapped serial channel status and error bits for transmit and receive operations Clearing the bits indicated will clear the error condition Baud Rate Sets the serial channel s data or baud rate Enter number from 1 6 to sele
32. Wizard x Welcome to Rockwell Software s EDS Wizard The EDS Wizard allows you to register EDS based devices unregister a device change the graphic images associated with a device create an EDS file from an unknown device Rockwell Software s EDS Wizard Options What task do you want to complete Register an EDS file s This option will add a device s to our database Unregister a device This option will remove a device that has been registered by an EDS file from our database Change a device s graphic image This option allows you to replace the graphic image icon file associated with a device Create an EDS file This option creates a new EDS file that allows our software to recognize your device lt Back Cancel Microscan Systems Inc 39 DN 120 DeviceNet Gateway User 9 Manual 6 Select Register a single file option Browse for your gateway s EDS file You can download the latest EDS and ICON files from the www microscan com website Click Next gt when you have the correct path and EDS file name in the Named box Rockwell Software s EDS Wizard Registration Electronic Data Sheet file s will be added to your system for use in Rockwell Software applications Register a single file C Register a directory of EDS files E Lookin subfolders Named C1DN120r9 eds Li If there is an icon file ico with the same name as the file s you are
33. all triangular indicator or white indicator on the switch Use a small screwdriver to align that indicator with the desired setting Remove the DN120 cover if necessary to access the rotary switches DeviceNet Baud Rate Switch Valid settings are 125K 250K 500K or PGM When PGM is selected the DN120 uses the baud rate saved in its retentive memory A valid baud rate must be stored before the PGM selection can be used The baud rate is stored from the previous DN120 power cycle It can also be set over the network DeviceNet Object Baud Rate attribute POSITION SETTING POSITION SETTING 0 125 Kbps 5 invalid 1 250 Kbps 6 invalid 2 500 Kbps 7 invalid 3 invalid 8 invalid 4 invalid 9 PGM MAC ID Switches The two MAC ID switches represent decimal numbers from 00 to 99 The LSB switch selects the Ones digit and the MSB switch selects the Tens digit Valid MAC IDs are 00 to 63 Setting a MAC ID address greater than 63 forces the gateway to use the MAC ID saved in retentive memory A valid MAC ID must first be stored before this feature can be used The MAC ID is stored from the previous DN120 power cycle It can also be set over the network DeviceNet Object MAC ID attribute MSB LSB Address MSB LSB Address 0 0to9 00 to 09 6 4to9 stored address 1 0 to9 10 to 19 7 0 to 3 stored address 2 0 to9 20 to 29 8 0 to9 stored address 3 0 to 9 30 to 39 9 0 to9 stored address 4 0 to 9 40 to 49 5 0 to 9 50 to 59 6 0 to 3 60 to 63 Micros
34. an Systems Inc 11 DN 120 DeviceNet Gateway User s Manual Bit Status 1 input byte Status Clear 1 output byte 0 Transmit Channel Blocked not used 1 Transmit Buffer Empty not used 2 Receive Parity Error Set 0 to clear Receive Parity Error condition 3 Receive Buffer Empty not used 4 Receive Buffer Overflow Set 0 to clear Receive Buffer Overflow condition 5 Framing Error Set 0 to clear Framing Error condition 6 Transmit Buffer Overflow Set 0 to clear Transmit Buffer Overflow condition 7 CTS Signal State 1 asserted not used A user application can use the Transmit Buffer Empty and Receive Buffer Empty status bits to monitor the transmitter and receiver states However the DN120 gateway also has three data synchronization features Receive Sequence Number Transmit Sequence Number Handshake Protocol that an application can use to better monitor the serial operations Receiving Messages The DN120 gateway has two modes for receiving serial data Stream Mode and Block Mode Stream Mode is best suited for applications with fixed length serial messages but it can also be used to capture any stream of serial data Block Mode is intended for both fixed and variable length message applications where a Delimiter byte denotes the beginning or end of a message Stream Mode Stream Mode saves all received message bytes in the Receive Buffer There is no defined beginning or end to the message stream The only limitation is the
35. an monitor the gateway s Receive Request Number RX Rost Num save the new RX Message bytes and set Receive Acknowledge Number RX Ack Num equal to Receive Request Number RX Rast Num Did gateway increment the RX Rqst Num indicating new data Save the RX Message bvtes Compare Function Copy Function RX Rost Num lt gt RX Ack Num lt byte array gt RX Message Acknowledge receint of new data Copy Function RX Ack Num RX Rqst Num Microscan Systems Inc 16 DN 120 DeviceNet Gateway User e Manual The Transmit Request Number is incremented by the user application when it sends new TX Message output bytes in the Poll Command Message After the gateway transmits these TX Message bytes it sets the Transmit Acknowledge Number equal to the Transmit Request Number acknowledging the transmission The updated Transmit Acknowledge Number is returned in the next Poll Response Message If the user application sends 0 as the Transmit Request Number the gateway ignores the TX Message output bytes and resets its Transmit Acknowledge Number to 0 The following ladder logic rungs show how the user application program writes a new TX Message value increments the Transmit Request Number TX Rqst Num and waits for the Transmit Acknowledge Number TX Ack Num to equal the Transmit Request Number TX Rast Num Note the application must wrap the Transmit Request Number from 15 to 1 Did gateway finish acknowledge transmitting the l
36. ast message Write next output bytes to transmit Compare Function Copy Function TX Ack Num TX Rqst Num TX Message lt byte array gt Increment TX Rqst Num new data Addition Function TX Roast Num TX Roast Num 1 If TX Rqst Number greater than 15 then reset number to 1 1 15 range Compare Function Write Function TX Roast Num 16 TX Rost Num 1 Microscan Systems Inc 17 DN 120 DeviceNet Gateway User e Manual Chapter 4 Gateway Configuration This chapter describes how to configure and operate the DN120 gateway You configure the gateway by reading and writing attribute values over its DeviceNet interface There are a variety of DeviceNet configuration tools available Simple configuration tools use GET_ATTRIBUTE and SET_ATTRIBUTE explicit message commands to read and write attribute values addressing each attribute by its Object Instance and Attribute numbers This information is contained in Chapter 5 More sophisticated configuration tools use EDS files to simplify attribute configuration You can configure the gateway using pull down menus buttons and data entry fields from the gateway s Electronic Data sheet EDS file Chapter 6 contains a configuration example using the Rockwell Software RSNetworx program Configure DeviceNet Interface Set the DeviceNet Baud Rate and MAC ID Address using the rotary switches Configure switches before connecting to the DeviceNet network There is either a sm
37. aud rate matches network baud rate e Verify Gateway baud rate is set from rotary switches or retentive memory value e Make sure Gateway MAC ID is not used by another device After setting Gateway MAC ID e Disconnect Gateway from network before changing MAC ID DeviceNet Master does not e Make sure Gateway MAC ID is not used by another device recognize Gateway e Verify Gateway MAC ID is set from rotary switches or retentive memory value e Verify DeviceNet baud rate NET LED is flashing red e Gateway is removed from DeviceNet Master scanlist or network Power cycle Gateway to reset NET LED is solid red e Make sure Gateway MAC ID is not used by another device Possible DeviceNet network failure NET LED is off e Check wiring and cable connections e Check DeviceNet power supply voltage e Make sure Gateway baud rate matches network baud rate e Verify Gateway baud rate is set from rotary switches or retentive memory value MOD LED is flashing or solid red Gateway has failed Cycle power to reset Replace Gateway if necessary RX LED does not flash green when data is sent to the Gateway If Sync enabled make sure Receive Request Number and Receive Acknowledge Number are equal Application must acknowledge last received message before gateway will receive the next message Verify data is being received in Receive Data Verify source device is transmitting data to Gateway Make sure hardware flow control signals are properly conn
38. byte string length Set the length byte to 0 if you don t want to transmit a Fault String The Fault String can be from 0 to 16 bytes long not counting Short_String length byte Example Fault String is 0x02 0x42 0x43 where string length is 2 and data bytes are 0x42 B and 0x43 C You must use the RSNetworx Class Instance Editor Set Attribute Single command to write a Short_String attribute value Status Enable Write any nonzero value to include the Status byte in Receive Data input bytes Status Clear Enable Write any nonzero value to include the Status Clear byte in Transmit Data output bytes Microscan Systems Inc 25 DN 120 DeviceNet Gateway User e Manual Configure DeviceNet Master Scan List You must calculate the number of input and output bytes required by your DN120 configuration before you can add the gateway to the DeviceNet master scanlist You need to configure the DeviceNet master to send the specific number of output bytes in its Poll Command Message and receive the specific number of input bytes in the gateway s Poll Response Message Once the input and output bytes are mapped in the DeviceNet master the user application program will be able to read and write data values to the input and output bytes Poll Consume Size The Poll Consume Size is the size in bytes of the Poll Command Message data field that is sent by the DeviceNet master to the DN 120 Poll Command data Sta
39. bytes in a Poll Response message If no new bytes in the Receive Buffer then the last received bytes are returned If new bytes are in the Receive Buffer then they are returned The gateway provides Receive Sequence Number or Handshake Protocol synchronization options to indicate whether the returned bytes represent old or new data Microscan Systems Inc 14 DN 120 DeviceNet Gateway User e Manual Transmitting Messages The Serial Stream Object receives output bytes TX Message from the DeviceNet master in a Poll Command message It saves the output bytes in the Transmit Buffer to be transmitted when the serial channel is available The maximum number of bytes that can be sent in one Poll Command message is defined by the Maximum Transmit Size attribute The Transmit Buffer can hold up to 64 bytes Because the DeviceNet Polled I O data exchange may occur many times faster than the transmission of serial data the application may need to synchronize the transmit data exchange with the gateway The number of output bytes in the Poll Command message is fixed The Status Clear and Transmit Sequence Number bytes are always sent if enabled The remaining number of bytes in the Poll Command is defined by the Maximum Transmit Size attribute If the number of TX Message bytes sent is less than the Maximum Transmit Size number then the remaining output bytes are undefined The gateway uses the Short_String length to determine the valid number of b
40. can Systems Inc 18 DN 120 DeviceNet Gateway User e Manual Serial Channel Baud Rate Option Switch The DN120 gateway has a rotary switch for the serial channel This switch has different functions for the DN120 models The DN120 model uses the rotary switch to select the RS232 channel baud rate Valid settings are 300 600 1200 2400 4800 9600 19200 bits per second and PRG table below When PRG is selected the DN120 uses the Baud Rate attribute in the Serial Stream Object A valid baud rate must be written over DeviceNet to this attribute POSITION SETTING POSITION SETTING 0 9600 bps 5 300 bps 1 4800 bps 6 19200 bps 2 2400 bps 7 invalid 3 1200 bps 8 invalid 4 600 bps 9 PRG Power Up Gateway Connect the gateway to a DeviceNet network to power up the gateway DeviceNet Status LEDs The DN 120 gateway has two bi color status LEDs NET and MOD that indicate operational status During power up the LEDs cycle through a sequence of alternating red and green After power up the NET LED should be flashing green or solid green if allocated to a DeviceNet master and the MOD LED should be solid green If this does not occur disconnect from DeviceNet and verify all the switch settings See Chapter 8 for additional troubleshooting topics State DeviceNet Status LED NET Off No power Flashing Red Configuration error Check DeviceNet switch settings Solid Red Unrecoverable error Flas
41. ce e Hf Communication Adapter Microscan Systems Inc 42 DN 120 DeviceNet Gateway User 9 Manual 12 The final step is to finish EDS file registration Click Next gt to complete the registration process Click Finish to close the EDS Wizard window Rockwell Software s EDS Wizard Final Task Summary This is a review ofthe task you wantto complete You would like to register the following device lt Back Cancel Rockwell Software s EDS Wizard Completing the EDS Wizard You have successfully completed the EDS Wizard Microscan Systems Inc 43 DN 120 DeviceNet Gateway User 9 Manual 13 Repeat steps 1 2 and 3 to browse the DeviceNet network RSNetworx should now recognize the device at MAC ID 03 as a DN120 gateway and display the DN120 icon Click Cancel when finished Browse for network B Selecta communications path to the desired network Y Autobrowse El Workstation APPSTEST 1770 KFD 1 DeviceNet H 00 1747 SDN Scanner Module 6 03 DN120 05 Workstation APPSTEST Z AB_DF1 1 DH 485 Cancel Help Microscan Systems Inc 44 DN 120 DeviceNet Gateway User 9 Manual Configure Serial Channel Once the gateway is connected to DeviceNet and communicating with RSNetworx you can configure its serial channel Make sure the gateway is not in the DeviceNet master scanlist before changing any attribute values Th
42. ct corresponding baud rate value For DN120 the RS232 Baud Rate switch must be set to PRG before this attribute can be used to set the baud rate Microscan Systems Inc 22 DN 120 DeviceNet Gateway User e Manual Parity Selects the parity type used in the serial byte Data Size Read only attribute indicates number of data bits in one serial byte This number does not include start parity or stop bits If parity is enabled 7 data bits are used If no parity 8 data bits are used Stop Bits Read only attribute indicates number of stop bits in one serial byte Fixed at 1 Flow Control Selects the method of flow control used across the serial interface NONE means there is no flow control over the serial data exchange The transmitting device can overflow the receiving device s buffer XON XOFF is a software flow control option Receiving device sends an XOFF character to the transmitting device when its buffer is full stopping further transmission It sends an XON character when it can again receive data The XOFF and XON characters are not saved as message data CTS RTS is an RS232 hardware flow control option available only on the DN120 gateway The RTS is an output and CTS is an input signal The gateway keeps RTS active low when it can receive data It only transmits data when CTS is active low CTS Detect Mode is an RS232 hardware flow control option available only on the DN120 gateway When CTS is assert
43. e Serial Stream Object attributes control the gateway s serial channel transmit and receive operations The following steps show how to configure the Serial Stream Object attributes using the RSNetworx program 1 Select the Online operation from the Network menu Select the DeviceNet adapter 1770 KFD 1 in this example and click OK Select a communications path to the desired network Y Autobrowse El Workstation APPSTEST 1770 KFD 1 DeviceNet 8 00 1747 SDN Scanner Module 6 03 DN120 05 Workstation APPSTEST es AB_DF1 1 DH 485 co es 2 RSNetworx prompts you to upload the network configuration Click OK to continue RSNetWorx for DeviceNet O Before the software allows you to configure online devices you must upload or download device information When the upload or download operation Li is completed your offline configuration will be synchronized with the online network Note You can upload or download device information on either a network wide or individual device basis T Help Microscan Systems Inc 45 DN 120 DeviceNet Gateway User s Manual 3 RSNetworx displays the following text box while it uploads the network configuration Browsing network 4 The following screen displays the online nodes DeviceNet RSNetWor for DeviceNet 1770 KFD DN120 RS232 Iek E e n 2 8 30 02 6 50 38 Mode changed to online The online path is APPSTEST 1 70 KFD
44. ected RX LED is solid red after Gateway receives data Check Status byte for any Receiver errors Reset Gateway or clear Status error bits if necessary Make sure parity is set to match transmitting device settings TX LED is solid red after receiving data from DeviceNet Master Check Status byte for Transmitter errors Reset Gateway or clear Status error bits if necessary Make sure parity is set to match receiving device settings TX LED does not flash green when Gateway should be transmitting data If Transmit Sequence Number enabled make sure number is being incremented by the application Gateway will not transmit new data unless the Transmit Sequence Number is changed Verify data is being saved in Transmit Data 1747 SDN Scanner displays error code 77 Gateway Poll Produce Size and or Poll Consume Size value do not 1747 SDN Poll Rx Tx settings Microscan Systems Inc 68 DN 120 DeviceNet Gateway User e Manual Appendix A Product Specifications DeviceNet Interface Power Requirements Loss of Ground Reverse Polarity Signal Levels Serial Channel Isolation ESD Protection Overload Protection Short Circuit RS232 Output Levels Environmental Operating Temperature Storage Temperature Size inches Mounting inches PCB Encapsulation Microscan Systems Inc 11 28 Vdc O 50 mA Yes 30 Vdc 18011898 500 Volts 10 kV 30 Volts
45. ed the DN120 serial channel can transmit and receive When CTS is not asserted the DN120 serial channel is disabled and Receive Buffer cleared Receive Count Number of bytes currently available in the Receive Buffer Writing any value to this attribute will clear the Receive Buffer Transmit Count Number of bytes currently in the Transmit Buffer Writing any value to this attribute will clear the Transmit Buffer Maximum Receive Size Defines the maximum number of data bytes to be returned when the Receive Buffer is read using either an Explicit Message or a Poll Response Message Data Format Control byte that defines the format of the TX Message and RX Message bytes transferred across DeviceNet Bit 3 selects whether the RX Message bytes are padded with the Pad bytes Set this bit 1 to enable If there are not enough message bytes in the Receive Buffer to fill up the RX Message input bytes then Pad characters are added at either the beginning or end of the message bytes Bit 2 selects whether Pad bytes are added at the beginning of the message 0 left justify or at the end of the message 1 right justify This bit is used only if the Pad option is enabled Microscan Systems Inc 23 DN 120 DeviceNet Gateway User e Manual Bit 1 defines whether the gateway saves the parity bit in received message bytes set 0 or if the gateway forces the parity bit to 0 in received message bytes set 1 This is typically u
46. ege Ee ee 19 Device Neta E EE 19 Serial Channel Status LEDS a thee 20 Register EDS Tee coi sks sles esis EE EE EE e avis oak Ee la 20 CONFIGURE SERTAL CHANNEL cocoioocioni coco S iss Eege AER eege EE ege See 21 CONFIGURE DEVICENET MASTER SCAN LIST 26 Re EE 26 HEES 26 CHAPTER 5 DEVICENET SPECTFICATIONG scsssscssssssssscsssscsssscsssscsssscssscssssssssecssssssssscsssssssessssssssesscoees 27 DEVIGENET MESSAGE EE 27 DEVICENET CLASS EE 27 DEVIGENET OBJECT EE 27 IDENTIFY OBJECT dd seco ds dele doo e Bs TRA as eA Aes 28 ROUTER OBJEC Iina ii A A A at Id a E E 29 DEVICENEFOBJEC T a e e lt de oe E e o REA is He e 30 EENHEETEN EE 31 CONNECTION OBIBCT TTT 32 SERIAL STREAM OBJEC ocio Seegen be Segel ege ed SEA SS 34 CHAPTER 6 RSNETWORX CONFIGURATION EXAMPLE ococcconccccnoccnococnccnnncconaccnnncconoccnocconococnccconoconos 36 CONFIGURE DEVICENET INTERFACE cscscccccccecsessssececececsessececececsesesesecececeeseaaeeeeececsesaaeceeececeeseaaesesescsensaaeeeeess 37 Microscan Systems Inc 2 DN 120 DeviceNet Gateway User s Manual CONNECT REGISTER EDS FILE cdi 37 CONFIGURE SERIAL CHANNEL 45 CONFIGURE DEVICENET MASTER SCAN LIST 52 CHAPTER 7 CONFIGURATION EXAMPLES sssscccssssccesssscccsssscccsssccccesssccccssecccessccccsssececessnsecscsscsecees 59 EXAMPLE 1 RECEIVING FIXED LENGTH Data 59 Bar Ode SCANNER EE 59 DNI2ZO Gateway ror Ses Eeer DEEN Rote Neel a AN eed E A HRN sin Wet AeA Sixes
47. erial Stream Object configures and controls the serial channel It receives and packages serial data into DeviceNet input bytes and transmits DeviceNet output bytes as serial data Chapter 5 contains detailed information on each DeviceNet object class instance and their associated attributes Microscan Systems Inc 8 DN 120 DeviceNet Gateway User e Manual DeviceNet Interface The DN120 gateway operates as a DeviceNet slave It supports Explicit Messages and Polled VO Messages of the predefined master slave connection set The Explicit Unconnected Message Manager UCMM is not supported There are four independent processes operating in a DN120 gateway application The first process is the exchange of input and output data between the user application program and the DeviceNet master The second process is the exchange of input and output data between the gateway and DeviceNet master using Polled I O messaging The third process is receiving serial messages and converting it to input data The fourth process is converting output data and transmitting it as serial messages The DeviceNet Polled I O Message process consists of the DeviceNet master sending output data to the DN120 in the form of a Poll Command message and the DN120 returning input data to the DeviceNet master in a Poll Response message The output and input data bytes are typically mapped into data files inside the DeviceNet master These data files are exchanged with the user
48. evice Download to Device lass Instance Editor Properties Microscan Systems Inc 49 DN 120 DeviceNet Gateway User e Manual 11 Select the Set_Attribute_Single service code to write an attribute value and the Get_Attribute_Single service code to read an attribute value Check Values in decimal box to enter class instance attribute and data values in decimal The Idle String address is Class 64 Instance 1 Attribute Number 19 The Fault String address is Class 64 Instance 1 Attribute Number 20 Enter the Short_String data as length byte then data bytes Example is 0x01 0x02 for a single byte string 0x02 ASCII STX 22 Class Instance Editor Node 3 12 x DN120 Execute Transaction Arguments Service Code Object Address Class Instance Attribute Value Description fi H 1 E Get Single Attribute F Send the attribute ID Transmit Data Size Data sent to the device Byte y IT Values in decimal Execute Receive Data Size Data received from the device Byte hd lt Radix Decimal L Close Help 12 Enter the remaining Serial Stream Object attributes in the Parameters Box window Status Click on to open selection box Shows current status and error information Click on any errors to clear check Press OK to continue Status Transmit Block Transmit FIFO empty Receive Parity error Receive FIFO empty Rece
49. evice control 1 Ctrl Q 0x31 49 1 0x51 81 Q 0x71 113 q 0x12 18 DC2 Device control 2 Ctrl R 0x32 50 2 0x52 82 R 0x72 114 r 0x13 19 DCH Device control 3 Ctrl S 0x33 51 3 0x53 83 S 0x73 115 s 0x14 20 DC4 Device control 4 Ctrl T 0x34 52 4 0x54 84 T 0x74 116 t 0x15 21 NAK Negative acknowledge Ctrl U 0x35 53 5 0x55 85 U 0x75 117 U 0x16 22 SYN Synchronous idle Ctrl V 0x36 53 6 0x56 86 V 0x76 118 v 0x17 23 ETB End of transmit block Ctrl W 0x37 55 7 0x57 87 W 0x77 119 W 0x18 24 CAN Cancel Ctrl X 0x38 56 8 0x58 88 X 0x78 120 D 0x19 25 EM End of medium Ctrl Y 0x39 57 9 0x59 89 Y 0x79 121 y Ox1A 26 SUB Substitute Ctrl Z 0x3A 58 E Ox5A 90 Z 0x7A 122 z 0x1B 27 ESC Escape Ctrl 0x3B 59 0x5B 91 0x7B 123 0x1C 28 FS File separator Ctrl 0x3C 60 lt 0x5C 92 0x7C 124 0x1D 29 GS Group separator Ctrl 0x3D 61 0x5D 93 0x7D 125 Ox1E 30 RS Record separator Ctrl Ox3E 62 gt Ox5E 94 N 0x7E 126 Ox1F 31 US Unit separator Ctrl _ 0x3F 63 2 Ox5F 95 E Ox7F 127 DEL Microscan Systems Inc 71
50. full duplex The DN120 gateways allow you to easily interface a wide variety of serial devices to any DeviceNet industrial control network Each gateway contains the feature packed D I P DeviceNet core Standard DN120 products are tightly packaged and sealed in a rugged industrial case Board level and customized gateways are also available upon request Serial Status LEDs Isolated Serial Channel RX TX male DB9 connector Serial Baud Rate y y mr l Rotary Switch MICROSCAN Mounting Holes DN126 DeviceNet MAC ID Rotary Switches DeviceNet Status LEDs NET MOD DeviceNet Channel male 5 pin micro connector DeviceNet Baud Rate Rotary Switch Product Features e 500V isolated serial channel RS232 with RTS CTS flow control XON XOFF software flow control 300 600 1200 2400 4800 9600 19200 bps serial data rates Configurable parity 64 byte transmit and receive FIFO buffers Powered from DeviceNet 24VDC Loss of ground protection circuitry DeviceNet slave mode supports POLL and EXPLICIT messages Rotary switches set DeviceNet baud rate and MAC ID Rotary switch sets serial data rate 4 bi color status LEDs Encapsulated circuit board in compact industrial case Microscan Systems Inc DN120 DeviceNet Gateway User Manual Chapter 2 Installation This chapter describes how to install and connect the DN120 gateway to a DeviceNet network and your serial device Mounting Mount on a horizontal or
51. gateway must send bytes from the Receive Buffer to the DeviceNet master Poll Response message faster than it saves new message bytes in the Receive Buffer or the 64 byte buffer may eventually overflow Incoming data stream 0x45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x02 0x42 0x43 0x44 Stream Mode 0x45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x02 0x42 0x43 0x44 Message Bytes Block Mode Block Mode uses a configurable Delimiter byte to signal the start or end of a new message packet The Delimiter cannot be used in any other part of the message or it would be incorrectly interpreted as the start or end of a message The gateway can be configured to save the Delimiter byte in the Receive Buffer or discard it In Block Mode the gateway does not return any new message data to the DeviceNet master until the entire serial message has been received The Pre Delimiter Block Mode configuration expects the Delimiter at the start of a message When a Delimiter byte is received the gateway saves all subsequent bytes in the Receive Buffer until another Delimiter is received signaling the start of another message or until the Maximum Receive Size number of bytes has been saved All bytes received after the Maximum Receive Size and before the next Delimiter are discarded In this mode the maximum number of bytes in a single message is defined by the Maximum Receive Size attribute Incoming data stream 0x45 0x62 0x02 0x31 0x32 0x32 0x42 0x45 0x02 0x42 0x43
52. generates the following Poll Response Message The Receive Sequence Number is 1 since this is the first message received from the Barcode Scanner The Short_String length is 8 since 8 bytes were received 7 Pad characters are added at the end of the message 0x02 0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x00 0x00 0x00 0x00 0x00 0x00 0x00 Microscan Systems Inc 62 DN 120 DeviceNet Gateway User e Manual Example 3 Receiving Post Delimited Data Same configuration as Example 1 Barcode Scanner The barcode scanner RS232 channel is set for 9600 bps 8 data bits no parity and 1 stop bit When it reads a UPC label it transmits following ASCII message format The message always begins ends with the ASCII ETX end of text 0x03 character The barcode data will consist of a variable number of 1 to 14 ASCII characters depending upon the UPC label being scanned It will not transmit a 0x03 in the barcode data field ASCII barcode data ETX DN 120 Gateway The receive mode will be Post Delimiter Mode because the barcode messages always end with the same character The Delimiter is 0x03 ETX and will not be included in the receive data The Maximum Receive Size is 15 because the largest message contains 14 ASCII bytes and 1 ETX byte The received bytes will be returned a Short String The gateway will only return new data bytes once in the Poll Response Message The Status byte will be enabled The Serial Stream Object can now be confi
53. gnal 5 CAN L BLUE Communication signal Serial Channel Interface Male DB9 Serial Connector 1 2 3 4 5 OOOO OO QUO 6 7 8 9 DN120 RS232 PIN SIGNAL DESCRIPTION 1 NC No Connect Do not connect any wires to NC pins 2 RXD Receive Data RS232 input signal 3 TXD Transmit Data RS232 output signal 4 NC No Connect 5 GND Ground Common for RS232 signals 6 NC No Connect 7 RTS Request To Send RS232 output signal 8 CTS Clear To Send RS232 input signal 9 NC No Connect Microscan Systems Inc DN 120 DeviceNet Gateway User e Manual Wiring Examples The following are typical DN120 gateway wiring configurations Your RS232 or RS422 485 interface may vary Refer to your device s documentation for the required data and control signals Simple RS232 Interface RS232 Serial Device RS232 Serial Device Microscan Systems Inc DN120 DeviceNet Gateway User Manual Chapter 3 Theory of Operation This chapter describes how the DN120 gateway operates You should have a working knowledge of DeviceNet and asynchronous serial communications before continuing The Open DeviceNet Vendors Association www odva com is a good source for general DeviceNet information Refer to your serial device documentation for its protocol information Gateway Operation The DN120 gateway receives asynchronous serial messages over its serial channel and returns the received bytes as input data to the DeviceNet master The gateway
54. guration Class Code 64 or 0x40 Attribute Data Class Instance Attribute Data Description 6 Baud Rate 0 0x40 0x01 0x06 0x00 0 9600 bps 7 Parity 0 0x40 0x01 0x07 0x00 0 no parity 10 Flow Control 2 0x40 0x01 Ox0A 0x02 2 CTS RTS 13 Max Receive Size 5 0x40 0x01 Ox0D 0x05 Fixed message size of 5 bytes 14 Data Format 00000001 0x40 0x01 Ox0E 0x01 String Format Short_String 15 Block Mode 00000000 0x40 0x01 OxOF 0x00 The gateway will return 6 bytes of Receive Data because the Maximum Receive Size is set to 5 and the data format is Short String add 1 for length byte The Status and Receive Sequence Number bytes are not enabled The Poll Produce Size can now be calculated for this DN120 configuration Microscan Systems Inc 59 DN 120 DeviceNet Gateway User s Manual Status byte 0 Receive Sequence Number byte 0 Short_String length byte 1 Maximum Receive Size 5 Poll Produce Size 6 The format of the Poll Response Message input bytes is as follows Short_String length Short_String data 1 byte 5 bytes The gateway always returns 6 input bytes in the Poll Response Message even if a new barcode message has not been received The gateway will return new message data only once and return a null data string if there is no new message data The application should check the Short_String length byte to determine if a new message is being returned A length of 5 indicates valid data bytes new message data A length of
55. gured The following shows the Serial Stream Object attribute settings for this application The 3rd column lists the address string if using Set_Attribute_Single commands to write the attribute values Serial Stream Object Configuration Class Code 64 or 0x40 Attribute Data Class Instance Attribute Data Description 6 Baud Rate 0 0x40 0x01 0x06 0x00 0 9600 bps 7 Parity 0 0x40 0x01 0x07 0x00 0 no parity 10 Flow Control 2 0x40 0x01 Ox0A 0x02 2 CTS RTS 13 Max Receive Size 15 0x40 0x01 0x0D Ox0F Receive messages up to 15 bytes 14 Data Format 00000001 0x40 0x01 Ox0E 0x01 String Format Byte Array 15 Block Mode 00000110 0x40 0x01 Ox0F 0x06 Delimiter enabled Strip Delimiter enabled Post Delimiter 16 Delimiter ETX 0x40 0x01 0x10 0x03 0x03 ASCII ETX character The gateway will return up to 16 bytes of Receive Data because the Maximum Receive Size is set to 15 and the data format is Short String add 1 for length byte The Status byte is enabled The Receive Sequence Number byte is not enabled The Poll Produce Size can now be calculated for this DN120 configuration Status byte 1 Receive Sequence Number byte 0 Short_String length byte 1 Maximum Receive Size 15 Poll Produce Size 17 Microscan Systems Inc 63 DN 120 DeviceNet Gateway User s Manual The format of the Poll Response Message input bytes is as follows Status Short_String length Short_String data undefined bytes 1 byte 1 byte 0 15
56. hing Green Device not allocated to a DeviceNet master Solid Green Normal runtime device allocated as a slave State Module Status LED MOD Off No power Flashing Red Configuration error Check object attribute settings Solid Red Unrecoverable error Flashing Green Not defined Solid Green Normal Operation Microscan Systems Inc 19 DN120 DeviceNet Gateway User Manual Serial Channel Status LEDs The gateway has two bi color LEDs to indicate serial channel activity The TX LED flashes green when a packet is being transmitted The RX LED flashes green when a packet is being received A fault is indicated by solid red After power up both LEDs should be off State Transmit Status LED TX Off No data being transmitted Flashing Red Not defined Solid Red Transmit error parity or overrun error Flashing Green Data being transmitted Solid Green Not defined State Receive Status LED RX Off No data being received Flashing Red Not defined Solid Red Receive error parity or overrun error Flashing Green Data being received Solid Green Not defined Register EDS File If using a DeviceNet configuration tool that supports Electronic Data Sheet EDS files you should now register the gateway s EDS file with the software The latest EDS file versions can be downloaded from www mksinst com Select the EDS file that matches your gateway s part number and firmware
57. it value was corrupted during transmission Flow control enables the receiving device to regulate the rate of incoming data Hardware flow control uses RTS CTS signals between the devices to control the rate of transmission Software flow control uses serial characters XON OFF to control the rate CTS Detect Mode uses the CTS signal to enable serial communications Flow control helps prevent data loss if the receiving device cannot store incoming data fast enough or if its Receive Buffer is full and cannot accept more data until existing data is processed The DN120 supports baud rates from 300 to 19200 bits per second It supports 8 data bits with no parity 7 data bits with parity and 1 stop bit The DN120 model supports RTS CTS XON XOFF and CTS Detect Mode flow control options Status Information The gateway can be configured to return serial channel status information in the Poll Response message and receive error clearing commands in the Poll Command message When enabled the Status byte is returned as an input byte and the Status Clear byte is received as an output byte These bytes contain 8 status bits defined below Each bit represents either an error or state condition for the serial transmitter and receiver Clearing the associated error bit in the Status Clear output byte will reset Receive Parity Error Receive Buffer Overflow Framing Error and Transmit Buffer Overflow error conditions Status Status Clear Bytes Microsc
58. ive overflow Framing error Transmit FIFO overflow State of CTS j Cancel Baud Rate Click on arrow to the right of the current value to select from pull down menu Parity Click on arrow to the right of the current value to select from pull down menu Microscan Systems Inc 50 DN 120 DeviceNet Gateway User e Manual Data Size Read only value set to 8 if no parity selected and 7 if party selected Stop Bit Read only value always set to 1 Flow Control Click on arrow to the right of the current value to select from pull down menu Receive Count Read only value Transmit Count Read only value Maximum Receive Size Click on current value and enter desired number in decimal Maximum Transmit Click on current value and enter desired number in decimal Data Format Click on to open selection box Click on check box to select the desired option The Delimiter Mode uses bits 0 1 2 3 of the byte Ignore bits 4 through 7 Data format O 00 String Format O 01 Strip Parity O 02 Pad Left 0 Right 1 03 Pad D4 05 06 07 G Cancel Block Mode Click on to open up selection box Click on check box to set or clear the desired bit The Serial Status byte uses bits O through 6 Ignore bit 7 Block Mode L Pre Post Delimeter Stript Delimeter Delimeter Enable Rev Seq Number Enable mt Seq Number Resend Syne gt Bit
59. o suit your application Click Apply Mapping button after you make changes Click Yes at the RSNetworx prompt to download any changes to the 1747 SDN Click Close to continue Microscan Systems Inc 56 DN 120 DeviceNet Gateway User e Manual Advanced Mapping 03 DN120 RE DEE E HEE Polled Discrete 1 0 128 7 lt not mapped gt 3 lt not mapped gt 4 lt not mapped gt Map From Map To Message Polled DI Memory Discrete Byte 0 E Word ji Bit 0 Bit 0 Apply Mapping BitLength 128 e Select the Output tab to view the automapped DN 120 out ut bytes Module Scanlist Input Output JADR Summary HSI TSE 03 DN120 Polled 16 0 1 1 0 gt Options E FS Memory Discrete MN Start Word 0 e pits 15 0 ishia hisilo e 7 e s a4lsle i o fA 14 Click the Advanced button to view current input mapping detail Change the mapping to suit your application Click Apply Mapping button after you make changes Click Yes at the RSNetworx prompt to download any changes to the 1747 SDN Click Close to continue Microscan Systems Inc 57 DN 120 DeviceNet Gateway User s Manual Advanced Mapping 03 DN120 Discrete 1 0 lt not mapped gt lt not mapped gt lt not mapped gt Microscan Systems Inc 58 DN 120 DeviceNet Gateway User e Manual Chapter 7 Configuration Examples This chapter contains four example gateway configurati
60. ocess The Handshake protocol requires the user application to acknowledge the receipt of new RX Message input bytes The protocol also requires the gateway to acknowledge the transmission of the last TX Message output bytes When enabled both the Receive Sequence Number input byte and Transmit Sequence Number output byte are used They are segmented into four 4 bit numbers shown below Valid numbers are 1 to 15 with 0 reserved to reset the gateway s numbers Transmit Sequence Number byte Receive Acknowledge Number Transmit Request Number Bits 4 7 upper nibble Bits 0 3 lower nibble Receive Sequence Number byte Receive Request Number Transmit Acknowledge Number Bits 4 7 upper nibble Bits 0 3 lower nibble The Receive Request Number is incremented by the gateway when it returns new RX Message input bytes in the Poll Response Message The gateway will increment from 15 to 1 skipping 0 The user application acknowledges receipt of this RX Message by setting the Receive Acknowledge Number equal to the Receive Request Number The updated Receive Acknowledge Number is sent back to the gateway in the next Poll Command Message When the Receive Acknowledge Number equals the Receive Request Number the gateway can return the next set of RX Message If the user application sends 0 as the Receive Acknowledge Number the gateway resets its Receive Request Number to 0 The following ladder logic rung shows how the user application program c
61. ons Example 1 Receiving Fixed Length Data Read UPC labels into a PLC using a serial barcode scanner a DN120 gateway and a DeviceNet scanner master The barcode scanner RS232 channel is connected to a DN120 serial channel The DN120 DeviceNet channel is connected to the PLC DeviceNet scanner The DeviceNet network is powered by an external 24VDC power supply Barcode Scanner PLC amp DeviceNet Scanner lt 0 CDN066 Gateway Power Supply UPC labels RS232 DeviceNet network Barcode Scanner The barcode scanner s RS232 channel is set for 9600 bps 8 data bits no parity and 1 stop bit When it reads a UPC label it transmits a 5 byte serial message which consists of the 5 ASCII characters printed on the UPC label DN120 Gateway The receive mode will be Stream Mode since there is no defined Delimiter for the start of a message or the end of a message All received data bytes will be returned as DeviceNet input bytes The Maximum Receive Size is 5 because the Barcode Scanner messages have a fixed length of 5 bytes The data bytes will be returned as a Short_String The gateway will only return the data bytes once in a Poll Response Message The Serial Stream Object can now be configured The following shows the Serial Stream Object attribute settings for this application The 3rd column lists the address string if using Set_Attribute_Single commands to write the attribute values Serial Stream Object Confi
62. ream is the data returned in the Poll Command Message See Chapter 3 for a complete description of the Poll Format Poll Response Status byte Receive Sequence Number byte Short_String Length byte RX data bytes Poll Command Status Clear byte Transmit Sequence Number byte Short_String Length byte TX data bytes Microscan Systems Inc 31 DN120 DeviceNet Gateway User Manual CONNECTION OBJECT The Connection Object instances manage the characteristics of each communication connection The DN120 is a Group 2 Only Slave device that supports 1 Explicit Message Connection Instance 1 and 1 Poll Message Connection Instance 2 Connection Object Class Code 05 0x05 Class Access Name Type Value Attribute Instance Access Name Type Value 0 non existent 1 configuring 2 established 3 timed out 0 Explicit Message 1 I O Message Transport Class Trigger USINT 0x83 for Explicit Message 0x82 for I O Message Get Production Connection Explicit Message 10xxxxxx011 produced connection id VO Message 01111xxxxxx produced connection id 5 Get Consumed Connection Explicit Message 10xxxxxx100 consumed connection id VO Message 10xxxxxx101 consumed connection id Get Initial Communication USINT 0x21 for Explicit Message Characteristics 0x01 for I O Message 7 Get Production Size UINT 67 for Explicit Message See Stream Object for I O Message Get Consumed Size UINT 71 for Explicit Message See
63. scan Systems Inc 10 DN 120 DeviceNet Gateway User e Manual Asynchronous Serial Communication Devices communicating on an asynchronous serial link exchange information one bit at a time Each bit is transmitted for a specific period of time defined by the baud rate Devices use internal timing circuitry to generate the baud rate There is no clocking signal between devices to synchronize the serial data flow hence the term asynchronous serial communications Serial data bits are organized into bytes When a data byte is asynchronously transmitted it is preceded by a start bit followed by the data bits an optional parity bit and one or more stop bits There can be a variable transmission delay between successive data bytes since each byte is framed by its own start and stop bits The receiver starts saving bits after is receives a valid start bit 0 and stops when it receives the expected number of stop bits 1 The data byte s least significant bit is transmitted first data bit 0 and the most significant bit is last data bit N start bit data bit O data bit 1 data bit N optional parity bit stop bit s The parity bit detects single bit errors in the transmission The parity bit is calculated and inserted by the transmitter The receiver calculates the parity of an incoming byte and compares it to the parity bit sent by the transmitter If the two bit values do not match then at least one serial b
64. sed when receiving 7 bit ASCII data Bit O defines String Format for TX Message and RX Message byte strings Set to O for Short_String format and 1 for Byte Array format Short_String defines the first byte as an explicit length byte containing the number of bytes that follow Byte Array has an implied length derived from the Maximum Receive Size attribute Block Mode Control byte that defines the serial receive mode synchronization mode and re send message option Bit 6 enables the Handshake Protocol synchronization option When enabled the Receive Sequence Number byte is added to Receive Data input bytes and the Transmit Sequence Number byte is added to the Transmit Data output bytes Bit 5 enables the re send message option When enabled the gateway continuously returns RX Message data in the Poll Response message If no new data has been received then the last data bytes are returned Bit 4 enables the Transmit Sequence Number synchronization option When enabled the Transmit Sequence Number byte is added to the Transmit Data output bytes Bit 3 enables the Receive Sequence Number synchronization option When enabled the Receive Sequence Number byte is added to the Receive Data output bytes Bit 2 selects the serial receive mode Set 0 for Stream Mode and set 1 for Block Mode Bit 1 selects whether the Delimiter is saved in the Receive Buffer set 0 or it is discarded set 1 This bit is only used when Block
65. tus Clear byte Transmit Sequence Number byte Short_String length byte TX data bytes 0 64 The first 3 bytes are present if enabled The following equation is used to calculate the DN120 Poll Consume Size Only include the overhead bytes that are enabled Status Clear byte 1 Transmit Sequence Number byte 1 Short_String length byte 1 Maximum Transmit Size Poll Consume Size Poll Produce Size The Poll Produce Size is the size in bytes of the Poll Response Message data field that is sent from the DN120 to the DeviceNet master Poll Response data Status byte Receive Sequence Number byte Short_String length byte RX data bytes 0 64 The first 3 bytes are present if enabled The following equation is used to calculate the DN120 Poll Produce Size Only include the overhead bytes that are enabled Status byte 1 Receive Sequence Number byte 1 Short_String length byte 1 Maximum Receive Size Poll Produce Size Microscan Systems Inc 26 DN120 DeviceNet Gateway User Manual Chapter 5 DeviceNet Specifications This chapter describes the DN120 gateway DeviceNet specifications DeviceNet Message Types The DN120 is a Group 2 Slave Device that supports the following message types CAN IDENTIFIER GROUP 2 MESSAGE TYPE 10xxxxxx111 Duplicate MAC ID Check Message 10xxxxxx110 Unconnected Explicit Request Message 10xxxxxx101 Master 1 O Poll Command Message 10xxxxxx100 Master Explicit Request Message XXxXxxx
66. tus Clear byte 0 Transmit Sequence Number byte 0 Short_String length byte 1 Maximum Receive Size 25 Poll Produce Size 26 The format of the Poll Command Message output bytes is as follows Short_String length message data 1 byte 25 bytes The gateway always receives 26 output bytes in the Poll Command Message regardless of the variable length messages The gateway uses the Short_String length byte to determine the valid number of message bytes in the Poll Command Message It will only transmit the valid message bytes All remaining output bytes are ignored If the gateway receives a Poll Command Message with Short_String length 0 no output bytes are transmitted The application can send variable length Short_Strings to be transmitted and send Null Data length 0 when there is no message to transmit Microscan Systems Inc 67 DN 120 DeviceNet Gateway User e Manual Chapter 8 Troubleshooting Problem Possible Cause DeviceNet Configuration Program does not recognize Gateway Register Gateway EDS file with Configuration Program DeviceNet Configuration Program does not recognize Gateway after loading EDS file Check Major and Minor Revisions for Gateway and EDS file to see if you have correct EDS file for your Gateway s firmware version Gateway does not appear on e Check wiring and cable connections DeviceNet network e Check DeviceNet power supply voltage e Make sure Gateway b
67. version Follow your configuration tool instructions to register EDS file Microscan Systems Inc 20 DN120 DeviceNet Gateway User Manual Configure Serial Channel The Serial Stream Object attributes control the DN120 serial channel These settings apply to all serial transmit and receive operations Before you can set or change any gateway configuration settings make sure the gateway is not in the DeviceNet master scanlist Serial Stream Object Instance Attributes Class Code 64 Number Name Data Type Value 3 Receive Data Short_String Received message data Returned in Poll Response Message or Byte Array 4 Transmit Data Short_String Message data to transmit Received in Poll Command Message or Byte Arra 5 Status USINT Bit 0 Transmit Channel Blocked Bit 1 Transmit Buffer Empty Bit 2 Receive Parity Error set 0 to clear Bit 3 Receive Buffer Empty Bit 4 Receive Buffer Overflow Error set 0 to clear Bit 5 Framing Error set 0 to clear Bit 6 Transmit Buffer Overflow Error set 0 to clear Bit 7 CTS Signal State 1 asserted Baud Rate USINT 0 9600 bps 4 600 bps 1 4800 bps 5 300 bps 2 2400 bps 6 19200 bps 3 1200 bps 7 Parity USINT 0 no parity 5 mark force to 1 1 even parity 6 space force to 0 2 odd parity Data Size 1 3 para Size USINT o stop Bis USINT USINT 0 none 2 CTS RTS 1 XON XOFF 4 CTS Detect Mode i SINT Number of
68. vertical surface While the RTV encapsulation protects its circuitry the DN120 serial channel connector is not rated for NEMA4 IP65 environments Mount the gateway in a suitable location or enclosure for your application The gateway will generate up to 1 4W of heat so provide sufficient clearance and airflow to maintain 0 C to 70 C operating temperature range Use two screws not provided in the 0 19 inch mounting holes shown below to fasten the DN120 to the mounting surface i Mtg Holes i 2 0 19 DIA E i 0 625 DIA On Case Wall i All dimensions are inches Microscan Systems Inc 5 DN 120 DeviceNet Gateway User e Manual Wiring The DN 120 requires two connections one to the DeviceNet network male 5 pin micro connector and one to the target serial device male DB9 connector Follow all applicable electrical codes in your area when mounting and wiring any electrical device All power is received from the DeviceNet network The DN120 draws up to 50mA from the 24VDC power supply Select your DeviceNet cables and power supply so that it can provide sufficient current for all networked devices at their peak operating power DeviceNet Interface Male 5 Pin Micro Connector DRAIN V o o a 9 E H CAN L Vy CAN_H PIN SIGNAL COLOR DESCRIPTION 1 DRAIN NONE Cable shield or drain wire 2 V RED DeviceNet 24VDC power 3 V BLACK DeviceNet 24VDC power 4 CAN_H WHITE Communication si
69. ws how the input and output bytes map into the Poll Response and Poll Command messages The gateway supports a maximum of 67 output bytes in a Poll Command message and a maximum of 67 input bytes in a Poll Response message DeviceNet Master Mapping of DeviceNet Poll Command and Poll Response Data DeviceNet Master Outputs DeviceNet Poll Command Message Data Status Clear TX Sequence Number if Other Output Bytes if enabled enabled 1 65 bytes output bytes output byte output byte output byte output byte output byte output byte output byte output byte output byte output bytes DeviceNet Master Inputs DeviceNet Poll Response Message Data Status RX Sequence Number if Other Input Bytes if enabled enabled 1 65 bytes input bytes input byte input byte input byte input byte input byte input byte input byte input byte input byte input byte input byte input bytes Serial Channel Interface The DN 120 serial channel consists of an asynchronous serial transmitter and receiver The serial interface is configured and controlled by the Serial Stream Object The Serial Stream Object attributes configure the serial channel baud rate parity and flow control This configuration applies to both the serial transmitter and receiver The DN120 gateway has separate 64 byte serial transmit and receive FIFO buffers allowing full duplex operation when supported by the physical layer media Micro
70. yes Bit 3 Enable Receive Sequence Number Bit 4 Enable Transmit Sequence Number Bit 5 Re send 0 no yes Bit 6 Synchronization 0 no 1 yes 16 Geuse Delimiter USINT Delimiter byte value Pad Character CHAR Pad byte value USINT Defines maximum bytes that can be transmitted Microscan Systems Inc 34 DN120 DeviceNet Gateway User Manual TUE ie AAA Poll no input bytes Length 0 for no Idle String TUE DN Poe See a A connection times out Length 0 for no Fault String Status Enable USINT Nonzero value enables Status input byte Status Clear Enable USINT Nonzero value enables Status Clear output byte Common Services Service Code Class Instance Service Name 05 0x05 No Yes Reset 14 0x0E Yes Yes Get_Attribute_Single 16 0x10 No Yes Set_Attribute_Single Microscan Systems Inc 35 DN120 DeviceNet Gateway User Manual Chapter 6 RSNetworx Configuration Example This chapter shows how to set up configure a DN120 gateway using the Rockwell Software RSNetworx software and your gateway s Electronic Data Sheet EDS file The system configuration uses an Allen Bradley 1770 KFD DeviceNet adapter MAC ID 62 to connect the PC running RSNetworx to the DeviceNet network A SLC500 system with a 1747 SDN DeviceNet Scanner MAC ID 00 is the DeviceNet master DN120 gateway has MAC ID 03 120VAC 24vdc output SLC502 DeviceNet Input 1747 P1 PLC CPU
71. ytes to transmit If Byte Array format is used all the bytes are transmitted Poll Command Message Data Transmit Sequence Number other output bytes 1 TX Message bytes fill Poll Command message TX Message bytes 2 TX Message is smaller than Poll Command message Unused output bytes are undefined TX Message bytes undefined Synchronization To ensure that no information is lost between the gateway s serial channel and the user application program the DN120 has three synchronization options Receive Sequence Number Transmit Sequence Number and Handshake Protocol Receive Sequence Number When enabled the gateway returns a Receive Sequence Number input byte in the DeviceNet Poll Response message The 8 bit Receive Sequence Number is incremented by the gateway whenever it returns new data in the input bytes The user application uses the Receive Sequence Number to signal the receipt of new message data Valid numbers are 0 255 Transmit Sequence Number When enabled the gateway receives a Transmit Sequence Number output byte in the DeviceNet Poll Command message The gateway will not send the TX Message bytes out the serial channel unless the 8 bit Transmit Sequence Number is different than the last received value Valid numbers are 0 255 Microscan Systems Inc 15 DN 120 DeviceNet Gateway User e Manual Synchronous Handshake Protocol The gateway can be configured with a more robust transmit and receive synchronization pr

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