Multi-Master DF1 Protocol User Guide
Contents
1. 3 Configuring Multi Master DF1 Accessing the DF1 Setup Mode over Telnet TCP IP Network Settings DF1 Settings MSG Block Remote IP Routing Table Save Quit or Reset the Configuration 4 Q amp A O O ON N OO OH A A HR OQ N _ a Q 5 Technical Support Figures Figure 271 Computer to PUG orirenoenniraei a a a E iain tled 5 Figure 2 PEC to PL Carsninei iiia a a a eaves 5 Multi Master DF 1 Protocol User Guide 3 1 Overview Multi Master DF1 A Lantronix IAP Device Server with Multi Master DF1 firmware understands the DF1 protocol and therefore allows up to four remote masters to share a single DF 1 Full Duplex device In addition the IAP Device Server with Multi Master DF 1 firmware allows the user to define a table to map the DF1 DST byte to one of many remote IPs This feature allows you to set up a small peer to peer network An IAP Device Server with Lantronix Standard Tunneling Firmware allows most DF 1 serial slaves to be accessed remotely through Ethernet However the firmware is limited to one socket representing one master at a time There is no way to have two masters access at once and share the serial port Also if the PLC uses MSG blocks to issue requests the messages all must go to a single remote IP For additional information about using Industrial Automation solutions see http www lantronix com solutions industrial index html Summary of Features Multi Master DF1 allo2. Allen Bradley programming or communications software SLC 500 Series If the PLC has an RS232 port you can connect directly using a standard RS232 null modem cable For the SLC 500 SLC 5 03 5 04 5 05 you can use 1747 CP3 cable The PLC port must be configured for DF1 communications not DH 485 Master PLC5 Series A direct connection can be made to the CHO port of enhanced PLC5 processors using a standard RS232 null modem cable The port must be configured for DF1 communications Multi Master DF1 Protocol User Guide 13 4 Q amp A DH 485 Networks An Allen Bradley KF3 or compatible device is needed to connect to the DH 485 network A standard null modem cable is used to connect the IAP Device Server to the KF3 device DH Networks An Allen Bradley KF2 or compatible device is needed to connect to the DH network A standard null modem cable is used to connect the IAP Device Server to the KF2 device Multi Master DF1 Protocol User Guide 14 5 Technical Support 5 Technical Support If you are experiencing an error that is not described in this user guide or if you are unable to fix the error you may Check our online knowledge base at http www lantronix com support Contact Technical Support in the US Phone 800 422 7044 US only or 949 453 7198 Fax 949 450 7226 Our phone lines are open from 6 00AM 5 30 PM Pacific Time Monday through Friday excluding holidays Contact Technical Support in Europ
3. C then it will open and move its outgoing socket between IAP Device Server A and IAP Device Server B This design would literally allow IAP Device Server C to poll hundreds of remote IAP Device Servers one at a time Likewise if the MSG blocks are on IAP Device Server A and IAP Device Server B then each can open and maintain a socket to IAP Device Server C with Multi Master DF1 firmware In this design you are limited to four as the Multi Master DF1 firmware only supports four active incoming sockets at one time Note that the standard firmware in IAP Device Server A and IAP Device Server B should be set up as expected for a serial tunnel see the Standard Tunneling Manual Setting Flush Mode to 0x11 causes all stale DF1 data to be flushed from the buffers when a failed socket recovers the PLC has no doubt forgotten about these messages anyway Setting the Disconnect Time to a value like 30 seconds allows better multi access to Standard Tunneling firmware on an IAP Device Server Limitations the outgoing socket must complete one full DF1 transaction before it can be moved to the next remote IP This means that if IAP Device Server C does want to use two MSG blocks to talk to IAP Device Server A and IAP Device Server B the trigger logic must fire them sequentially one after the other not at the same time Multi Master DF1 Protocol User Guide 6 3 Configuring Multi Master DF1 As a member of Lantronix s Industrial Automation Protoc
4. netmask Select Command or parameter set 1 2 R S Q to change Note If you just reflashed the IAP Device Server with Multi Master DF1 firmware we recommend that you reset all of the parameters to the factory defaults 3 To reset the parameters to the factory defaults type R on the command line The default parameters display Multi Master DF1 Protocol User Guide 3 Configuring Multi Master DF 1 4 Accept the defaults by pressing Enter at the prompts In most cases users choose to accept the defaults TCP IP Network Settings To view or change TCP IP settings 1 On the command line type 1 A series of prompts display IP Address 192 168 000 249 Set gateway IP address N Y Gateway IP Address 000 192 000 168 000 000 1 Netmask Number of Bits for Host Part 0O default 00 Change telnet config password N N 2 The menu already displays the IP address If you want to change it at the IP Address prompt type the new address pressing Enter after each octet The IP address must be set to a unique value in your network To learn more about IP addressing see the User Guide for your IAP Device Server Note The IAP Device Server will not connect to the network if the assigned IP address is already in use by another device 3 At the Set Gateway IP Address prompt accept the default or type the IP address of the default router connected to the same LAN segment as the IAP D
5. 009 because they may have unexpected consequences in some networks Multi Master DF1 Protocol User Guide 9 3 Configuring Multi Master DF 1 MSG Block Remote IP Routing Table This is the mapping information that forwards or routes a DF1 message originated by the serial DF1 device The DF1 firmware uses the DST or destination byte of the DF1 message to select and possibly modify the remote IP to access You can define 5 entries each with a range of DST addresses But be aware that the DF1 firmware searches this table sequentially and will stop at the first match 1 On the command line type 3 A series of prompts display MSG Block Remote IP Routing Table 1 000 000 not set 2 000 000 not set 3 000 000 not set 4 000 000 not set 5 000 000 not set C hange D elete E xit select function 2 Selecting Change or Delete will display the prompt Which entry number DST from 000 DST to 000 100 Slave IP address 192 168 000 000 24 MSG Block Remote IP routing Table 1 000 100 192 168 000 024 Fixed IP 2 000 000 not set 3 000 000 not set 4 000 000 not set 5 000 000 not set C hange D elete E xit select function Entering a fixed IP creates a fixed relationship of many DSTs to one remote IP So in the example below a DF1 message received for DST 7 would go to IP 192 168 0 24 as would mes
6. LANTRONIX Multi Master DF1 Protocol User Guide Part Number 900 282 Revision B August 2004 Copyright amp Trademark 2002 Lantronix All rights reserved No part of the contents of this book may be transmitted or reproduced in any form or by any means without the written permission of Lantronix Printed in the United States of America Ethernet is a trademark of XEROX Corporation UNIX is a registered trademark of The Open Group Windows 95 Windows 98 Windows 2000 and Windows NT are trademarks of Microsoft Corp Netscape is a trademark of Netscape Communications Corporation Contacts Lantronix Corporate Headquarters 15353 Barranca Parkway Irvine CA 92618 USA Phone 949 453 3990 Fax 949 453 3995 Technical Support Phone 800 422 7044 or 949 453 7198 Fax 949 450 7226 Online www lantronix com support Sales Offices For a current list of our domestic and international sales offices go to the Lantronix web site at http www lantronix com about contact index html Disclaimer amp Revisions The information in this guide may change without notice The manufacturer assumes no responsibility for any errors that may appear in this guide Date Rev Comments 9 6 02 A Initial Document 8 04 B Reformatted Multi Master DF1 Protocol User Guide 2 Contents Figures 1 Overview Multi Master DF1 Summary of Features 2 Applications RSLinx HMI or OPC PLC to PLC Communication MSG blocks
7. e Middle East and Africa Phone 49 0 89 31787 817 Email eu_techsupp lantronix com Firmware downloads FAQs and the most up to date documentation are available at http www lantronix com support When you report a problem please provide the following information Your name and your company name address and phone number Lantronix model number Lantronix serial number Software version on the first screen shown when you Telnet to port 9999 Description of the problem Debug report stack dump if applicable Status of the unit when the problem occurred please try to include information on user and network activity at the time of the problem Multi Master DF1 Protocol User Guide 15
8. ers 2 Atthe Interface Type prompt type 1 2 or 3 RS 232 RS422 485 4 wire or RS 485 2 wire to indicate the wiring you are using Press Enter 3 Atthe Enter Serial Parameters prompt enter the serial settings matching the serial device Separate each entry by a comma Press Enter 4 Enter a baud rate in the 300 115200 range but be aware that most PLCs work better at 9600 or 19 2K due to over ambitious surge protection 5 Normally DF1 is fixed to 8 data bits no parity 1 stop bit however you may change this if you have special needs 6 Atthe Use DF1 16 bit CRC CheckSum prompt accept the default Y or type N No Press Enter If you enter N the setting changes to BCC Make sure this entry matches the PLC settings CRC Cyclic Redundancy Check is considerably better than BCC Block Character Check use it whenever possible Note The total number of sockets in the following two steps may not exceed four 7 Atthe Number to use for Lantronix Redirector prompt enter a number from 0 to 4 to indicate how many sockets to redirect to You must set the Lantronix Windows Com Port Redirector software to 3001 but the TCP port 14001 is used on the wire Press Enter 8 Number to use for Raw DF1 in TCP automatically compliments the number of redirector sockets to make up 4 total To change the number at the prompt set the TCP port to any value from 1 to 65 535 Press Enter Caution Do not use ports 0 1023 or 14001 14
9. evice Server The gateway address must be within the local network Press Enter The gateway address or router allows communication to other LAN segments 4 Atthe Netmask prompt accept the default or type the number of bits taken from the IP address that are assigned for the host section Press Enter Standard Class A 24 bits Standard Class B 16 bits Standard Class C 8 bits The IAP Device Server prompts for the number of host bits to be entered then calculates the subnet mask The subnet mask displays in standard decimal dot notation for example 255 255 255 0 when the saved parameters display 5 You can prevent unauthorized access to the setup menu via a Telnet connection to port 9999 At the Change Telnet configuration password prompt type Y Yes and press Enter Type a 4 character password and press Enter Multi Master DF1 Protocol User Guide 8 3 Configuring Multi Master DF 1 DF1 Settings To view or change DF 1 Settings 1 On the command line type 2 A series of prompts display Interface Type 1 RS232 2 RS422 RS485 4 wire 3 RS485 2 wire 00001 Enter serial parameters 19200 8 N 1 9600 8 n 1 Use DF1 16 bit CRC CheckSum Y Y You have 4 total incoming sockets Number to use for Lantronix Redirector 00002 3 Number to use for Raw DF1 in TCP 1 TCP port to use for Raw DF1 10001 The protocol is fixed at DF1 Full Duplex This is a bi directional point to point link between two DF 1 pe
10. mand line Multi Master DF1 Protocol User Guide 12 4 Q amp A Can I use the Lantronix IAP Device Server with Multi Master DF1 to link directly to the Ethernet port of a ControlLogix PLC5 80E or SLC5 05 No the Multi Master DF1 does not do protocol conversion It only manages raw DF1 that has been encapsulated as is within TCP The ControlLogix is talking CIP Ethernet IP and the PLC5 and SLC5 are by default talking CSP port 2222 or AB Ethernet as it is sometimes called or CIP if you enable Multi hop None of these PLCs can accept raw DF1 on a TCP socket There are pros and cons of doing this either way We have chosen the most generic widely applicable way to support DF1 with TCP IP Does the IAP Device Server with Multi Master DF1 autobaud No you must manually set the baud rate to match your PLC When I use the Com Port Redirector why doesn t the baud rate I set for the virtual COM port seem to be accepted by the IAP Device Server You must manually set the baud rate in your IAP Device Server to match your PLC The baud rate and other information entered on the computer are not sent to the IAP Device Server Can I multi drop PLC with the IAP Device Server with Multi Master DF1 No this firmware only supports DF1 Full Duplex point to point and not DF1 Half Duplex master to multiple slaves How do select a cable for different Allen Bradley PLCs Micrologix Series Use the same cable as when using the
11. ol IAP suite of products the Multi Master DF1 firmware can be loaded into any of the IAP family of products DF 1 is a serial communications protocol used by most Rockwell Automation s Allen Bradley Programmable Controllers Lantronix provides an intelligent Ethernet enabling technology for the most commonly used Industrial Serial Protocols including DF1 You must configure certain parameters before the IAP Device Server can be used on a network Accessing the DF1 Setup Mode over Telnet You can use a Telnet connection to configure the unit over the network 1 Access the Multi Master DF1 Setup Mode screen via Telnet to port 9999 and the unit s IP address 2 Within 5 seconds press Enter The Setup Mode screen displays Software version V01 0 010321 Press Enter to go into Setup Mode Multi Master DF1 1 TCP IP Network Settings Ethernet Autodetect 255 255 255 000 Telnet config password set 2 DF1 Settings Protocol 02200 DF1 Full Duplex Serial Interface RS232 19200 8 N 1 Check Sum CRC 16 bit Redirector Sockets 2 port 03001 Raw Tunneled Sockets 2 port 10001 3 MSG Block Remote IP Routing Table None Defined R eset all to factory Defaults S ave all to EEPROM and Quit Q uit without saving Serial Number 6410064 MAC address 00 20 4A 64 27 50 Model IAP Device Server Plus Firmware Code AD IP addr 172 20 198 72 no gateway set
12. s 1 On lines 1 5 enter the fixed and or dynamic IP addresses or address ranges that correspond to the message blocks in your PLC or serial device Press Enter between each entry 2 Press Enter The window refreshes and displays all of your entries Note You must save your settings to apply them Multi Master DF1 Protocol User Guide 11 3 Configuring Multi Master DF1 Save Quit or Reset the Configuration Multi Master DF1 1 TCP IP Network Settings Ethernet Autodetect IP addr 192 168 0 249 gateway 192 168 000 001 2 DF1 Settings Protocol DF1 Full Duplex Serial Interface RS232 9600 8 N 1 Check Sum 22 8 6 ese ees CRC 16 bit Redirector Sockets 3 port 03001 Raw Tunneled Sockets 1 port 10001 3 MSG Block Remote IP Routing Table 000 100 192 168 000 024 Fixed IP 101 254 192 168 000 000 DST as low octet of IP R eset all to factory Defaults S ave all to EEPROM and Quit Q uit without saving Select Command or parameter set 1 2 R S Q to change 1 Review your entries 2 You have the following options e To save the configuration and exit type S on the command line This saves the parameters to EEPROM Caution DO NOT POWER CYCLE the unit too fast after doing this Allow the unit to reboot naturally one time first To quit without saving type Q on the command line The unit reboots To restore the default values type R on the com
13. sages for DST 55 or 73 Everything in that range goes to one IP Entering a 4 octet as zero creates a dynamic entry where the DST becomes the 4 octet in the remote IP address So in the example below a DF1 message received for DST 110 would go to IP 192 168 0 110 and one for DST 205 would go to IP 192 168 0 205 For safer application the DF1 firmware will not allow you to create an IP with the 4 octet of 000 or 255 Some networks treat an IP like 192 168 0 0 as shorthand for an entire subnet group while most networks treat an IP like 192 168 0 255 as a broadcast Multi Master DF1 Protocol User Guide 10 3 Configuring Multi Master DF1 Which entry number DST from 000 101 DST to 000 254 Slave IP address 192 168 000 000 MSG Block Remote IP routing Table 1 000 100 192 168 000 024 Fixed IP 2 101 254 192 168 000 000 DST as low octet of IP 3 000 000 not set 4 000 000 not set 5 000 000 not set C hange D elete E xit select function You have the option to change or delete an entry You will be asked which of the five entries you want to change or delete Deleting an entry just clears it When changing an entry you will be asked for the minimum and maximum DST address to include in the entry These are inclusive so in the example above entry 1 includes DST 0 to 100 You will also be asked for the remote IP to use for this range of DST addresse
14. vent conflict between the masters For example it prevents two remote copies of RSLogix from locking the PLC resources The first will be granted the resource and the second will be rejected as the resource is locked already PLC to PLC Communication MSG blocks Another use is to allow the attached PLC to issue MSG blocks for peer to peer communications While the picture at right just shows three PLCs you could also have HMI masters and others attached to some or all of the PLCs Figure 2 PLC to PLC TCP IP over Ethernet Device Server CA lulti ta ster ort A or B orc C DFI Firmware DF1 FD OF1 FD DF4 FD Full Duplex a RS 232 SRS 232 a R 232 O e A The Multi Master DF1 firmware allows four incoming and one outgoing socket to be active at one time This means in a simple example that IAP Device Server C with Multi Master DF1 firmware can allow sockets from IAP Device Server A IAP Device Multi Master DF1 Protocol User Guide 5 2 Applications Server B 2 x HMI and still use its outgoing socket to query IAP Device Server A and IAP Device Server B You only need the Multi Master DF1 firmware on an IAP Device Server for which you want to support multiple sockets For example the three node peer to peer would work fine if IAP Device Server A and IAP Device Server B are using Standard Tunneling firmware and only IAP Device Server C has Multi Master DF 1 If the MSG blocks are on the IAP Device Server
15. ws up to four remote sockets to connect to one serial DF1 full duplex slave These can be mixed as any combination of Com Port Redirector or raw sockets for example four of one and none of the other or two of each Incoming redirector sockets are fixed at TCP port 14001 Users must set the Lantronix Com Port Redirector software on the Windows computer to port 3001 Full instructions are in the Tech Tips section of http automation lantronix com Users can set incoming raw DF1 sockets to any TCP port from 1024 to 65535 except 14000 to 14009 All raw sockets share the same TCP port number Outgoing DF1 requests for example PLC MSG blocks are routed to remote IPs based on the DST byte in the request Since there is only a single active outgoing socket you must issue MSG blocks one at a time to allow the sockets to be opened an answer to be returned and the to be socket closed Multi Master DF1 Protocol User Guide 4 2 Applications RSLinx HMI or OPC The most common use of the Multi Master DF1 firmware is to allow two remote masters for example two HMI OPC servers or one HMI and one RSLogix to talk to the PLC at the same time Figure 2 1 Computer to PLC TCP IP over Ethernet TCP IP i Device Server om or Multi Master im a fe B om or Firmware OFA Full Duplex RS 232 DF1 Serial Driver Through Com Port Redirector The Multi Master DF1 firmware understands the DF1 protocol enough to pre
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