Quick Start Guide
Contents
1. Important Notes When PLC and networking parameters are changed they will need to be downloaded to the PLC The PLC will also have to be reset i e holding the Run Stop Reset switch on the front of the PLC to the left for 2 seconds and then returning the switch to the Run state or resetting the power to the PLC before the new parameters will take effect 2 1 Operation Setting For the Ethernet front port of a PLC or an Ethernet Communication module the first configuration step is usually the configuration of the Operation Settings 2 1 1 Ethernet Front Port For the Ethernet front port selecting Parameter gt PLC Parameter from the Project Navigation Pane and then selecting the Built in Ethernet Port Setting will bring up the configuration screen as shown in Figure 1 below Custom Solutions Center Figure 1 Operation Setting of an Ethernet Front Port e The IP Address setting area o Setting the IP address of the front port is very straightforward This area allows a user to configure the front port IP Address properly with the corresponding subnet mask and Default Router IP if it is used e Communication Data Code o The Communication Data Code should be configured to use Binary instead of ASCII in most cases since most third party devices are communicating using binary instead of ASCII e Enable Online Change FTP MC Protocol o Checking this checkbox will enable the selected data in the CPU mo2. MELSOFT Connection gt MELSOFT Connection TCP w MELSOFT Connection TCP e MELSOFT Connection X cp w MELSOFT Connection IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number End Cancel Figure 9 is shown as an example Channel 1 is selected to be the communication channel and Port Number 8197H is used to be the communication port Since the channel is a server and is accepting connection requests from any external device using Port 8197H the other parameter settings are v Figure 9 Open Setting for Acting as a Unpassive Communication Server Figure 10 is shown as an example Channel 1 is selected to be the communication channel and Port Number 8197H is used to be the communication port Since the channel is a server and is accepting Custom Solutions Center connection requests only from an external device with specific IP Address e g 192 168 3 10 and Port e g 8190H the other parameter settings are Protocol TCP Open System Socket Communication TCP Connection Fullpassive Host Station Port No 8197 Destination IP Address 192 168 3 10 Destination Port No 8190 IP Address Port No Input Format DEC y IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number End Cancel Figure 10 Open Setting for Acting as a Fullpassive Com
3. Open Setting button and launch the configuration screen Configure communication channels to be used to send and receive connection requests and MC Protocol data transfers Figure 32 is shown as an example Channels 2 and 3 are used as a pair of communication channels one for receiving and one for sending Port Number 4570H is used to be the communication port Since the channel pair is intended to be used as a client and is the one responsible for establishing the connection and initiate data transfer requests Even though these communication settings are intended to be used for MC Protocol client operations they are the same as the generic TCP IP Socket Communication settings since the MC Protocol commands and data are sent and received as generic TCP IP data packets and handled within the MEAU CSC MC Protocol Communication Function Blocks The parameter settings should be Protocol TCP Open System Active Fixed Buffer Receive for Channel 2 and Send for Channel 3 Fixed Buffer Communication Procedure No Procedure Pairing Open Enable Existence Confirmation No Confirm Host Station Port No 4570 Destination IP Address 192 168 3 40 Destination Port No 8197 Custom Solutions Center www infoPLC net y lil hel LA i jafafafajafafafala ajefefolaJajo apa jefafalafjafafalafafalalalolo nnn IP Address and Port No will be displayed by the selected format Please enter the value accor
4. The IP Address of the external destination system should be specified here Destination Port No The port number of the external system that should be used to establish the connection e TCP Socket Communication Unpassive O Host Station Port No Since the PLC is configured to be Unpassive it does not matter which external system is requesting the connection Only the Host Station Port Number needs to be specified As long as the connection request is designated to communicate with this specified Host Station Port Number the PLC will respond properly No additional parameters need to be configured TCP Socket Communication Fullpassive Since the PLC is configured to be Fullpassive it is important for the PLC to respond to the Open Request from a specific external system O Host Station Port No The Port No of the PLC is specified here that will be used for the connection establishment and subsequent data transfers Destination IP Address The IP Address of the external destination system should be specified here Destination Port No Custom Solutions Center The port number of the external system that should be used to establish the connection and data transfers e UDP Socket Communication Since the PLC is configured to use UDP and Socket Communication it does not require any specific connection to be established first with the target system It sends the data out and relies on the devices in betwee
5. MITSUBISHI ELECTRIC MA AUTOMATION INC Custom Solutions Center Quick Start Guide Ethernet Communication With Mitsubishi Q PLCs Version 1 0 Content E SEO CL OE Vaca erase tea clears aie Sa aac aa cern tutte nc oes anna Catldnaiey einai oelc iS 1 2 Mitsubishi Ethernet Communication CONFIQULATION sureness a a a a a a a a 1 2 1 ODS ALON octne a as 1 LEE Ethernet Front PO ts a 1 2A QUIETO Mo Uli 2 2 2 Open setini seus a AAA AAS 5 A A OC 5 222 OIT AE OO MO AUS aa o ii pa 8 3 Generic TCP IP COMMUNICA ON rd de 12 3 1 Configuring Mitsubishi PLE asa Seve ta did aa 12 3 1 1 Using the PLC Built In Front Ethernet Port ccccccccccsssscccessececceecccseneccssessecseaecesseneceseaeeeeseaseesseseessesessaeeess 12 a2 Usine avs 7 LET IIO MOS dada tidad 14 3 2 Configuring Mitsubishi iPLG as a Client in A a tios 17 3 2 1 Using the PLC Built In Front Ethernet Port cccccccccccssscccesseccccescccseneccseescceseuecesseuecessaeseeseaeeesseeseesaaesessaneeees 17 S232 Usine a 7 LET 1 LOO Mod Said 19 A YMC PROLOCGI COMUNICA iiits 20 4 1 Configuring Mitsubishi PLC as a MC Protocol S VEP ccccsssscccccessececcaesseccccauseccccseeeeeeeseeasecessaeaseeessueaeeeeesaageeeeees 21 Adis Uime tne Pe Built in FrontiEthernet PON erine e a eci 21 A2 Using a OIIE Ac stale a dvccdeadsatebetatcdasenss a N 22 4 2 Contisuning MitsUbISANPRUG AS a Cent dass cuacvaet ec a 24 4 2 1 Using the PLC Built In Front Etherne
6. The values that can be selected for the Protocol are TCP and UDP and selection of each one will require further configuration of other parameters Open System When TCP is selected the next parameter to be configured is the Open System The options are MELSOFT Connection Active Unpassive and Fullpassive for either TCP or UDP Protocol When UDP is selected no Y TCP Connection is required e TCP MELSOFT Connection o Selecting the MELSOFT Connection allows the PLC to communicate to MELSOFT components or devices such as GX Works2 or GOT o When MELSOFT Connection is selected no further parameter configuration is required Custom Solutions Center e TCP Active o The PLC is the device initiating the TCP Connection open operation to the external device It is considered to be a client in the communication e TCP Unpassive o The PLC is the device waiting for a TCP Connection request from external devices Selecting Unpassive allows the PLC to accept connection requests from any external device regardless of the IP address of and port number used by the external device o The PLCis behaving as a server in the communication e TCP Fullpassive o The PLC is the device waiting for a TCP Connection request from external devices Selecting Fullpassive allows the PLC to accept connection requests only from the external device with specific IP address of and port number as
7. button and configure the parameters on the pop up window Ethernet Operation Setting page according to Section 2 1 2 The following figure is shown as an example with IP address of the Ethernet module at 192 168 3 117 It is critical to note that the Enable Online Change checkbox is CHECKED Communication Data Code Initial Timing Do not wait for OPEN Communications impossible at STOP time Always wait for OPEN Communication possible at STOP time e Binary Code ASCII Code IP Address Setting Input Format DEC y Send Frame Setting e Ethernet V2 0 IP Address 192 117 C TEEE802 3 v Enable Online Change TCP Existence Confirmation Setting Use the KeepAlive C Use the Ping Cancel Figure 25 Ethernet Module Operation Setting for Acting as a MC Protocol Server Select End to complete the Operation Setting and return to Ethernet CC IE MELSECNET configuration page Click the Open Setting button and launch the configuration screen Select a communication channel to be used to receive the connection requests and data requests Figure 26 is shown as an example Channel 1 is selected to be the communication channel and Port Number 4571H is used to be the communication port Since the channel is a server and is accepting connection requests from any external device using Port 4571H It is important to note that the Fixed Buffer Communication Procedure shou
8. channel is designated to be a Receive buffer o TCP Fullpassive Send The Fixed Buffer of this channel is designated to be a Send buffer Receive The Fixed Buffer of this channel is designated to be a Receive buffer o UCP Send The Fixed Buffer of this channel is designated to be a Send buffer Receive The Fixed Buffer of this channel is designated to be a Receive buffer Fixed Buffer Communication Procedure There are two options for the parameter Fixed Buffer Communication Procedure e Procedure Exist o Communication using the MC Protocol and the random access buffers can be performed as well o Data is communicated in 1 1 by handshaking with an external device o The Ethernet module uses the message data format as specified in Chapter 7 of the QJ71E71 Ethernet Module User Manual Basic which includes a Header Subheader Data Length and the data to be sent The response messages will send the Subheader and an End Code Subheader 60H Fixed Buffer Communication Command Custom Solutions Center Subheader EOH Fixed Buffer Communication Response Subheader 50H MC Protocol Communication Command Subheader DOH MC Protocol Communication Response Subheader 61H Random Access Buffer Read Subheader 62H Random Access Buffer Write e No Procedure o It allows a more generic communication without additional message protocol controls When sending da
9. configured by additional parameters are described in following sections o The PLC is behaving as a server in the communication Fixed Buffer Data communication between a PLC and external devices uses either fixed buffer or the random access buffer areas on an Ethernet module In the communication using fixed buffers a maximum of 1 k words of data can be sent or received between a PLC and an external system per fixed buffer area An Ethernet module has 16 fixed buffer data areas of 1 k word each and each area can be assigned as either a sending or receiving buffer for an external device Notes The random access buffer can be written to and read from freely by any external device excluding another QU71E71 100 Ethernet module without giving access to a specific external device so it can be used as a common buffer area for all of the external devices connected to the PLC A PLC uses From and To instructions to read and write data to an external device through the Random Access Buffer No configuration parameters need to be set for Random Buffer communication e For each communication channel o TCP Active Send The Fixed Buffer of this channel is designated to be a Send buffer Receive The Fixed Buffer of this channel is designated to be a Receive buffer o TCP Unpassive Send The Fixed Buffer of this channel is designated to be a Send buffer Receive The Fixed Buffer of this
10. IP socket communication commands to a server for connection handling and data transfer e configuring the Mitsubishi PLC to be a server in order to respond to MC Protocol communication commands from clients for connection handling and data transfer e configuring the Mitsubishi PLC to be a client to initiate MC Protocol communication commands to a MC Protocol server for connection handling and data transfer The Ethernet communication can be accomplished through the built in Ethernet front port on a PLC QnUDEH or L or a QJ71E71 100 communication module This Quick Start Guide is mainly focusing on the configurations and steps required to accomplish the communication tasks It is not intended to be a programming guide on how to write actual PLC code using Mitsubishi instructions However it does refer to the use of Communication Function Blocks that have been developed by and released through the Custom Solutions Center that can be used to make the PLC code development much easier 2 Mitsubishi Ethernet Communication Configuration There are several configuration options that need to be configured properly in order to achieve the desired results However the descriptions of these configuration options in the corresponding Mitsubishi manuals do not convey information related to the server client terminology common in the industry The purpose of this section is to describe these terms so that the key concepts can be interpreted correctly
11. KeepAlive C Use the Ping Cancel Figure 12 Ethernet Module Operation Setting for Acting as a Communication Server Select End to complete the Operation Setting and return to the Ethernet CC IE MELSECNET configuration page Click the Open Setting button and launch the configuration screen Select a communication channel to be used to receive the connection requests and data requests a Unpassive Figure 13 is shown as an example Channel 1 is selected to be the communication channel and Port Number 4571H is used to be the communication port Since the channel is a server and is accepting connection requests from any external device using Port 4571H the other parameter settings are Protocol TCP Open System Unpassive Fixed Buffer Receive Fixed Buffer Communication Procedure No Procedure Pairing Open Disable Existence Confirmation No Confirm Host Station Port No 4571 Custom Solutions Center b www infoPLC net TF Addresa Port No Input Format pec ape E z z if hm TP Address and Port No will be displayed by the selected format Please enter the value according to the selected number Figure 13 Open Setting for Acting as an Unpassive Communication Server Fullpassive Figure 14 is shown as an example Channel 1 is selected to be the communication channel and Port Number 4571H is used to be the communication port Since the chann
12. MC Protocol commands For the PLC to act as a MC Protocol server only a communication channel needs to be configured to receive the MC Protocol commands The firmware of the Ethernet Front Port or the Ethernet Module will respond to the MC Protocol commands correctly and responds appropriately For the PLC to act as a MC Protocol client it will utilize the CSC MC Protocol function blocks to send the MC Protocol commands Currently six MC Protocol commands are supported through these function blocks Batch Read Batch Write Random Read Random Write Multiple Block Batch Read and Multiple Block Batch Write One should refer to the Ethernet MC Protocol Communication FBs Quick Start Guide and the function block library to obtain more information and the actual software The Quick Start Guide and the Library software can be obtained by downloading from the MEAU website Custom Solutions Center 4 1 Configuring Mitsubishi PLC as a MC Protocol Sever In this section the Mitsubishi PLC is acting as a MC Protocol server and providing data within the PLC to MC Protocol client requests The client requesting the data can be another Mitsubishi PLC or a third party device or system 4 1 1 Using the PLC Built In Front Ethernet Port Ethernet TCP IP TEP Packets 3 Party TCP IP Client Figure 21 Example of a MC Protocol Server Using the Ethernet Front Port The steps that are necessary to configure the Ethernet front port for th
13. Select Parameter gt Network Parameter gt Ethernet CC IE MELSECNET 2 On the configuration screen similar to the one shown in Figure 2 set up the Start I O No Network No Group No and Station No and then select the Online mode 3 Click the Operation Setting button and configure the parameters on the pop up window Ethernet Operation Setting page according to Section 2 1 2 The following figure is shown as an example with IP address of the Ethernet module at 192 168 3 117 me Ethernet Operation Setti Communication Data Code Initial Timing Do not wait for OPEN Communications impossible at STOP time a Always wait for OPEN Communication possible at STOP time e Binary Code ASCII Code IP Address Setting Input Format DEC v Send Frame Setting e Ethernet V2 0 IP Address 192 68 3 117 C JEEE802 3 Enable Online Change TCP Existence Confirmation Setting e Use the KeepAlive Use the Ping Cancel Figure 19 Ethernet Module Operation Setting for Acting as a Communication Client 4 Select End to complete the Operation Setting and return to Ethernet CC IE MELSECNET configuration page 5 Click the Open Setting button and launch the configuration screen 6 Configure communication channels to be used to send and receive connection requests and data transfers Figure 20 is shown as an example Channels 2 and 3 are used as a pair of communicati
14. ccording to the selected number Custom Solutions Center www infoPLC net Custom Solutions Center
15. ding to the selected number o m om Figure 32 Open Setting for Acting as a Communication Client Custom Solutions Center www infoPLC net 5 Appendix Example This example utilizes the TCP IP function blocks to send three words of data The details of the TCP IP Communication Function Blocks can be obtained from the MEAU website Industry Solutions gt Custom Solutions Center gt TCP Communication FB Libraries The first Ethernet module is used and is located in the slot right next to the PLC i e Starting I O Address using Label SIO is set to 0 and the Channels 2 and 3 are used for receiving and sending data respectively The Ethernet Module 1 is the Client with IP Address 192 168 3 117 and Port 4570 and is sending data to the Server at 192 168 3 39 on Port 8197 The parameter settings are shown in the following figures Necessary Setting No Setting Already Set Setif itis needed No Setting Already Set TE Start I O No Valid Module During Other Station Access fi Interlink Transmission Parameters a input 16 point unit to start I O No in which module is mounted gym Routo prance posgmentinage Check End Cancel Print Window ci iia Cala Initial Timing i Binary Code c rehash Sa aes ASCII Code E pia e cdo PROA possible at STOP time mtrs Send Frame Setting Ethernet V2 0 C 1EEE802 3 Mi I i ls E Port No will be displayed by the selected format value a
16. dule to be changed online by an external device when it communicates the proper commands to the PLC through the use of FTP or MC protocol When using TCP IP socket communication this box should be un checked e Disable Direct Connect to MELSOFT o The Ethernet port can be configured to communicate to MELSOFT components or devices such as GX Works2 or GOT A Direct Connection is connecting the built in Ethernet Port directly to the PC running GX Developer or GX Works2 using one Ethernet cable No Ethernet hubs or switches involved The direct connection enables communication without pre setting the IP Address of the front port Checking this checkbox will disable this Direct Connect capability This checkbox should remain unchecked for most applications e Do Not Respond to search for CPU Built in Ethernet Port on Network o The CPU will not respond to a search of the Built in Ethernet port when this checkbox is checked The user should determine whether his application is best to hide the availability of the built in Ethernet port from being known to other devices on the network For most application this checkbox should remain unchecked to allow the most flexibility The FTP Setting and Time Setting are not relevant to the purpose of this discussion so they are not described However details on the Open Setting are provided in Section 2 2 2 1 2 QJ71E71 100 Module For the Ethernet module QJ71E71 s
17. e PLC to become a MC Protocol server and the required built in Ethernet Port setting parameters are listed below 1 Select Parameter gt PLC Parameter and select the Built In Ethernet Port Setting 2 Configure the parameters on this Built in Ethernet Port Setting page according to Section 2 1 1 The following figure is shown as an example with IP address of the front port set at 192 168 3 39 It is critical to note that the Enable Online Change FTP MC Protocol checkbox is CHECKED Q Parameter Setti jomer omn PLC Neme PLC System PLC File PLC RAS Boot File Program SFC Device YO Assignment Multiple CPU Setting Built in Ethernet Port Setting IP Address Setting Open Setting Input Format DEC j z Setting PP Address 192 168 3 40 tting Subnet Mask Pattern Default Router IP Address Communication Data Code e Binary Code C ASCH Code V Enable online change FTP MC Protocol Disable direct connection to MELSOFT Do not respond to search for CPU Built in Ethernet port on network Set if itis Default Changed Print Window Print Window Preview Acknowledge XY Assignment Default Check End Cancel Figure 22 Built in Ethernet Port Setting for Acting as a Communication Server 3 Select a communication channel to be used to receive the connection requests and data requests Custom Solutions Center Figure 23 is shown as an example Channel 1 is selected to be th
18. e QJ71E71 100 for the PLC to act as a client and the required Ethernet Module Operation Setting parameters are listed below 1 Select Parameter gt Network Parameter gt Ethernet CC IE MELSECNET 2 On the configuration screen similar to the one shown in Figure 2 set up the Start I O No Network No Group No and Station No and then select the Online mode 3 Click the Operation Setting button and configure the parameters on the pop up window Ethernet Operation Setting page according to Section 2 1 2 The following figure is shown as an example with IP address of the Ethernet module at 192 168 3 117 It is important to note that the Enable Online Change checkbox is checked Custom Solutions Center Ethernet Operation setting rm ee E Communication Data Code Initial Timing Binary Code Do not wait for OPEN Communications impossible at STOP time C ASCII Code z Always wait for OPEN Communication possible at STOP time IP Address Setting Send Frame Setting Input Format DEC a Ethernet V2 0 IP Address 192 168 3 117 IEEE802 3 v Enable Online Change TCP Existence Confirmation Setting e Use the KeepAlive C Use the Ping End Cancel Figure 31 Ethernet Module Operation Setting for Acting as a MC Protocol Client Select End to complete the Operation Setting and return to Ethernet CC IE MELSECNET configuration page Click the
19. e communication channel and Port Number 8197H is used to be the communication port Since the channel is a server and will accept MC Protocol commands from any external device communicating to Port 8197H the parameters are Protocol TCP Open System MIC Protocol Host Station Port No 8197 Built in Ethernet Port Open Setti A IP Address Port No Input Format DEC z IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number a Figure 23 Open Setting for Acting as a MC Protocol Server 4 1 2 Using a QJ71E71 100 Module Ethernet TCP IP A p TCP Packets tiu j r E a r ii za ml r EF mm e diii 3 Party TCP IP Client Mitsubishi PLC as a Server e QU71E71 100 IP 192 168 3 117 Figure 24 Example of a Communication Server Using the Ethernet Module The steps that are necessary to configure the Ethernet module QJ71E71 100 for the PLC to act as a MC Protocol server and the required Ethernet Module Operation Setting parameters are listed below 1 Select Parameter gt Network Parameter gt Ethernet CC IE MELSECNET Custom Solutions Center On the configuration screen similar to the one shown in Figure 2 set up the Start I O No Network No Group No and Station No and then select the Online mode Click the Operation Setting
20. e is required For most cases this parameter should be set to No Confirm Host Station Port No Destination IP Address Destination Port No TCP Active o Host Station Port No The Host Station is referring to the PLC that one is currently configuring and the Port Number that will be used for the TCP connection is specified here When the PLC receives an Open Request through this Port it will respond properly to establish the connection e t is recommended to use a port number between 0400H and 1387H or 1392H and FFFEH e The port numbers on 0001H to O3FFH are generally used by other major protocols e Port numbers 0014H and 0015H should not be used for the Socket communication function since they are designated for FTP function e Port number 007BH should not be used with the Socket communication function since it is used for time setting function o Destination IP Address The IP Address of the external destination system should be specified here o Destination Port No The port number of the external system that should be used to establish the connection TCP Unpassive o Host Station Port No Since the PLC is configured to be Unpassive it does not matter which external system is requesting the connection Only the Host Station Port Number needs to be specified As long as the connection request is designated to communicate with this specified Host Station Port Number the PLC will respond properly No additional paramet
21. el is a server and is accepting connection requests only from an external device with specific IP Address e g 192 168 3 10 and Port e g 4570H the other parameter settings are Protocol TCP Open System Fullpassive Fixed Buffer Receive Fixed Buffer Communication Procedure No Procedure Pairing Open Disable Existence Confirmation No Confirm Host Station Port No 4571 Destination IP Address 192 168 3 10 Destination Port No 4570 Custom Solutions Center IP Address Port No Input Format pec Exstence Confirmation No Confrm n 168 3 10 4571 IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number Figure 14 Open Setting for Acting as a Fullpassive Communication Server 3 2 Configuring Mitsubishi PLC as a Client In this section the Mitsubishi PLC is acting as a client and is actively requesting data from a remote data server The server providing the data can be another Mitsubishi PLC or a third party device or system 3 2 1 Using the PLC Built In Front Ethernet Port Ethernet TCP IP TCP Packets 3 Party TCP IP Server m m c A r A m e im i Mil Mic COC Mitsubishi QNUDEH PLC Client e IP 192 168 3 39 Figure 15 Example of a Communication Client Using the Ethernet Front Port The steps that are necessary to configure the Ethernet front port f
22. electing Parameter gt Network Parameter gt Ethernet CC IE MELSECNET will bring up the configuration screen in Figure 2 below Custom Solutions Center E Ethernet CCIE MELSECNET E CC tink hin Remote Password A Intelligent Function Module E Global Device Comment AE Global Label E Program Setting 4 POU a Device Memory 4 Device Initial Value Necessary Setting Mo Setting Already Set Set ifitismeeded 1o Seting Already Set Start I O No Vald Module During Other Staton Access 1 X Please input 16 point unit HEX to start 1 0 No in which module is mounted AE Figure 2 Network Parameter Configuration It is assumed that the reader of this Quick Start Guide has certain knowledge and understanding of Mitsubishi network fundamentals and that he or she can configure the Start I O Number Network Number Group Number and Station Number properly Brief descriptions of these parameters are explained below Readers should refer to the QJ71E71 Basic Manual for additional information regarding these parameters e Start O Number The Starting I O number is the head I O address of the Ethernet module It is determined by the slot where the module is located in the PLC rack and the location and types of the modules in the rack The Starting I O Addresses can be located in the I O assignment area of the PLC Parameter Setting screen by selecting Parameter gt PLC Parameter from the P
23. ers need to be configured TCP Fullpassive Since the PLC is configured to be Fullpassive it is important for the PLC to respond to the Open Request from a specific external system o Host Station Port No The Port No of the PLC is specified here It will be used for establishing the connection and subsequent data transfers o Destination IP Address The IP Address of the external destination system should be specified here o Destination Port No The port number of the external system that should be used to establish the connection and data transfers UDP Since the PLC is configured to use UDP and Socket Communication it does not require any specific connection to be established first with the target system It sends the data out and relies on the devices in between the sending system and the receiving system to get the data where it is supposed to go properly This method of transmission does not provide any guarantee that the data will ever reach its destination On the other hand this method of transmission has a very low overhead and is therefore very popular to use for services that are not that important to work on the first try o Host Station Port No The Port No of the PLC is specified here that will be used for receiving the UDP data o Destination IP Address The IP Address of the external system where the UDP packets are intended for Custom Solutions Center o Destination Port No The port number of the exter
24. figure the Ethernet front port for the PLC to act as a MC Protocol client and the required built in Ethernet Port setting parameters are identical to those of the generic TCP IP Socket Communication since the MC Protocol commands are packaged as application data in the TCP IP frames The steps and parameters are 1 Select Parameter gt PLC Parameter and select the Built In Ethernet Port Setting 2 Configure the parameters on this Built in Ethernet Port Setting page according to Section 2 1 1 Custom Solutions Center The following figure is shown as an example with IP address of the front port set at 192 168 3 39 and the checkbox for Enable Online Change FTP MC Protocol is checked A A me PLC Name PLC S ystem PLC File PLC RAS Boot Fis Program SF Device YO Assignment MuRiple CPU Setting Built in Ethernet Port Setting Figure 28 Built in Ethernet Port Setting for Acting as a Communication Client Select a communication channel to be used to send the connection requests and data transfer requests Figure 29 is shown as an example Channel 1 is selected to be the communication channel and Port Number 8198H is used to be the communication port to communicate with an external device with IP Address 192 168 3 117 Port 4571 Thus the MC Protocol commands will be sent to the device at 192 168 3 117 Port 4571 The external device should send the requested data back to the PLC using TCP IP Port number 8198
25. l device regardless of the IP address of and port number used by the external device The PLC is behaving as a server in the communication Fullpassive The PLC is the device waiting for a TCP Connection request from external devices Selecting Fullpassive allows the PLC to accept connection requests only from the external device with specific IP address of and port number as configured by additional parameters are described in following sections The PLC is behaving as a server in the communication e UDP Socket Communication O No TCP Connection is required Host Station Port No Destination IP Address Destination Port No e TCP Socket Communication Active O O O Host Station Port No The Host Station is referring to the PLC that one is currently configuring and the Port Number that will be used for the TCP connection is specified here When the PLC receives an Open Request through this Port then it will respond properly to establish the connection e t is recommended to use a port number between 0400H and 1387H or 1392H and FFFEH e The port numbers on 0001H to 03FFH are generally used by other major protocols e Port numbers 0014H and 0015H should not be used for the Socket communication function since they are designated for FTP function e Port number 007BH should not be used with the Socket communication function since it is used for time setting function Destination IP Address
26. l device to imitate the TCP connection or UDP communication based on the parameter setting in Open Setting as described later A sequence program to manage the open and close of connection is not required and even if the PLC is in STOP mode the communication module can respond to the communication commands from the external device When status control such as remote RUN STOP from an external device is used for the PLC the user should check this checkbox If the Do Not Wait for Open is selected the communication line will be closed during remote STOP and it cannot be reopened again from the PLC side and the remote run command from the external device will not work either o Proper selection of these checkboxes will be detailed in the following sessions according to the desired communication functions e The IP Address setting area o Setting the IP address for the front port is very straightforward This area allows a user to configure the front port IP Address properly with the corresponding subnet mask and Default Router IP if it is used e Send Frame Setting o The Ethernet V2 0 frame is the most commonly used today since it is often used directly by the Internet Protocol This is the default setting The differences between the two frames are subtle Custom Solutions Center O Ethernet Field length in bytes 7 1 6 6 2 46 1500 S Preamble lo Destination Source P T Data address address ype _ IEEE 802 3 Field leng
27. ld be set as Procedure Exist as discussed in 2 2 2 The parameter settings are Protocol Open System Fixed Buffer Fixed Buffer Communication Procedure Pairing Open Existence Confirmation Host Station Port No TCP Unpassive Receive Procedure Exist Disable No Confirm 4571 Custom Solutions Center IP Address Port No Input Format DEC se Fixed Buffer Host Station Destination Pairing Existence Destination Open System Fixed Buffer rece Open Confirmation Port No IP Address Port No ojo Aa juju ta fo foi fot oe t j jwinj e o ALLL a o IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number End Cancel Figure 26 Open Setting for Acting as a MC Protocol Server 4 2 Configuring Mitsubishi PLC as a Client In this section the Mitsubishi PLC is acting as a MC Protocol client and is actively requesting data from a remote MC Protocol server The server providing the data can be another Mitsubishi PLC or a third party device or system 4 2 1 Using the PLC Built In Front Ethernet Port Ethernet TCP IP TCP Packets TTT os o A gt o o o E o o O e MTT eee 55555 3 Party TCP IP Server Mitsubishi QNUDEH PLC Client e IP 192 168 3 39 Figure 27 Example of a Communication Client Using the Ethernet Front Port The steps that are necessary to con
28. munication Server 3 1 2 Using a QJ71E71 100 Module Ethernet TCP IP TCP Packets SENA E A A A ae q E J FE 4 i ih e g a amp 3 Party TCP IP Client Mitsubishi PLC as a Server e QJ71E71 100 IP 192 168 3 117 Figure 11 Example of a Communication Server Using the Ethernet Module The steps that are necessary to configure the Ethernet module QJ71E71 100 for the PLC to act as a server and the required Ethernet Module Operation Setting parameters are listed below 1 Select Parameter gt Network Parameter gt Ethernet CC IE MELSECNET 2 On the configuration screen similar to the one shown in Figure 2 set up the Start I O No Network No Group No and Station No and then select the Online mode 3 Click the Operation Setting button and configure the parameters on the pop up window Ethernet Operation Setting page according to Section 2 1 2 2 1 1 The following figure is shown as an example with IP address of the Ethernet module at 192 168 3 117 Custom Solutions Center Ethernet Operation Setting Soom Communication Data Code Initial Timing Binary Code C Do not wait for OPEN Communications impossible at STOP time C ASCI Code G Always wait for OPEN Communication possible at STOP time IP Address Setting Send Frame Setting Input Format DEC v a Ethernet V2 0 IP Address 192 __ 347 C TeEs02 3 Enable Online Change TCP Existence Confirmation Setting Use the
29. n the sending system and the receiving system to get the data where it is supposed to go properly This method of transmission does not provide any guarantee that the data will ever reach its destination On the other hand this method of transmission has a very low overhead and is therefore very popular to use for services that are not that important to work on the first try o Host Station Port No The Port No of the PLC is specified here that will be used for receiving the UDP data o Destination IP Address The IP Address of the external system where the UDP packets are intended for o Destination Port No The port number of the external system where the UDP packets are intended for 2 2 2 QU71E71 100 Module The QJ71E71 100 module has different configuration parameters compared to those for the Ethernet front port o ain Po a EE o D D O Y gt O O O O 3 gt es O gt O O ns EA E o y O E O O E A gt gt gt gt es A gt O O A E D D gt OS gt E gt OD D D A A Y O o ee D D D D A y E es Ds O O A es y JA y E O O A E IS E O E gt O O O O N_N gt O OS IO DA A gt A O O 16 gt X Host station port No destination port No Please input in HEX End Cancel Figure 6 QJ71E71 Open Setting Screen Protocol
30. nal system where the UDP packets are intended for 3 Generic TCP IP Communication This chapter contains the information to configure a PLC to establish a TCP IP connection send and receive data through proper Ethernet channels and ports and close a TCP IP connection A server is an application that offers a service to network users A client is a requester of a service A communication task consists of both a server and a client part which can run on the same or on different systems Users usually invoke the client part of the application which builds a request for a particular service and sends it to the server part of the application using TCP IP as a transport vehicle The server is a program that receives a request performs the required service and sends back the results in a reply A server can usually deal with multiple requests and multiple requesting clients at the same time 3 1 Configuring Mitsubishi PLC as a Sever In this section the Mitsubishi PLC is acting as a server and providing data within the PLC to client requests The client requesting the data can be another Mitsubishi PLC or a third party device or system asking for the data 3 1 1 Using the PLC Built In Front Ethernet Port Ethernet TEPIP SS TCP Packets 3 Party TCPAP Client Figure 7 Example of a Communication Server Using the Ethernet Front Port The steps that are necessary to configure the Ethernet front port for the PLC to become a server and the
31. nd it is recommended that the Protocol setting for each of the communication channels is configured first Custom Solutions Center Built in Ethernet Port Open Setti o MELSOFT Connection MELSOFT Connection MELSOFT Connection IMELSOFT Connection Connection MELSOFT Connection v CP E CP v MELSOFT Connection CP v MELSOFT Connection TCP v MELSOFT Connection X CP v MELSOFT Connection P v MELSOFT Connection w MELSOFT Connection 7 TC CP Host station port No destination port No Please input in HEX ea _ Cmos Figure 5 Ethernet Front Port Open Setting Screen Protocol The values that can be selected for the Protocol are TCP and UDP and selection of each one will require further configuration of other parameters Open System When either TCP or UDP is selected the next parameter to be configured is the Open System The three options are MELSOFT Connection MC Protocol and Socket Communication for either TCP or UDP Protocol e MELSOFT Connection o Selecting the MELSOFT Connection allows the PLC to communicate to MELSOFT components or devices such as GX Works2 or GOT o When MELSOFT Connection is selected no further parameter configuration is required e MC Protocol o Selecting the MC Protocol enables a personal computer display device or other third party system using Mitsubishi s framework for communication to read and w
32. ommand using the ICMP echo request response function to a remote device with which communication has not been performed for a certain period of time and waiting to see whether or not a response is received The Ethernet module automatically returns an echo response packet when it receives a PING echo request command The module will send a response when it receives a PING command even if the connection used in the data communication with the remote device is closed In most applications KeepAlive is a better method to identify communication issues 2 2 Open Setting The purpose of the open processing is to establish a connection with an external device in order to perform the following forms of data communication A sequence program can perform open processing establishing connection with up to a maximum of 16 external devices using the 16 channels that are available per Ethernet module or the Ethernet front port It is important to know that the Open Settings for the Ethernet front port are different from those of the QJ71E71 module The Ethernet front port can communicate using MC Protocol TCP IP Socket Communication and MELSOFT Connections The Ethernet module has additional communication capability for using fixed buffer communication and random access buffer communication 2 2 1 Ethernet Front Port The Open Setting parameters for the Ethernet Front Port are shown in the Figure 5 below The key parameter is the Protocol selection a
33. on channels one for receiving and one for sending Port Number 4570H is used to be the communication port Since the channel pair is intended to be used as a client and is the one responsible for establishing the connection and initiate data transfer requests the parameter settings should be Protocol Open System TCP Active Custom Solutions Center Fixed Buffer Receive for Channel 2 and Send for Channel 3 Fixed Buffer Communication Procedure No Procedure Pairing Open Enable Existence Confirmation No Confirm Host Station Port No 4570 Destination IP Address 192 168 3 39 Destination Port No 8197 P Address Port Ho input Format DEC A lt lt dl a E Procedure Bla e le elele le le lo les se fem fen us fe P Address and Port No will be displayed by the sebected format Please enter the value according to the selected number Figure 20 Open Setting for Acting as a Communication Client 4 MC Protocol Communication This chapter contains information to configure a PLC to establish a TCP IP connection send and receive data using MC Protocol through proper Ethernet channels and ports and then close a TCP IP connection The MC Protocol Communication Function Blocks released by the MEAU Custom Solution Center are built upon the TCP IP Socket Communication Function Blocks MC Protocol frames are constructed and sent as application data in typical TCP IP packets according to the specific
34. or the PLC to act as a client and the required built in Ethernet Port setting parameters are listed below 1 Select Parameter gt PLC Parameter and select the Built In Ethernet Port Setting 2 Configure the parameters on this Built in Ethernet Port Setting page according to Section 2 1 1 The following figure is shown as an example with IP address of the front port set at 192 168 3 39 Custom Solutions Center PLC Name PLC System PLC File PLC RAS Soot File Program SFC Device yO Assignment Multiple CPU Setting Built in Ethernet Port Setting P Address Setting Open Setting Input Format DEC X FTP Setting IP Address 192 168 3 39 Time Setting Subnet Mask Pattern i i Default Router IP Address Communication Data Code Binary Code C ASCII Code Enable online change FTP MC Protocol 7 Disable direct connection to MELSOFT 7 Do not respond to search for CPU Built in Ethernet port on network Set if it is Default Changed Figure 16 Built in Ethernet Port Setting for Acting as a Communication Client 3 Select a communication channel to be used to send the connection requests and data transfer requests Figure 17 is shown as an example Channel 1 is selected to be the communication channel and Port Number 8198H is used to be the communication port to communicate with an external device with IP Address 192 168 3 117 Port 4571 Since the channel is intended to be
35. required built in Ethernet Port setting parameters are listed below 1 Select Parameter gt PLC Parameter and select the Built In Ethernet Port Setting 2 Configure the parameters on this Built in Ethernet Port Setting page according to Section 2 1 1 The following figure is shown as an example with IP address of the front port set at 192 168 3 39 Custom Solutions Center PLC Name PLC System PLC File PLC RAS Boot File Program SFC Device 1 0 Assignment Multiple CPU Setting Built in Ethernet Port Setting P Address Setting Open Setting Input Format DEC v FTP Setting IP Address 192 168 3 39 Time Setting Subnet Mask Pattern Default Router IP Address Communication Data Code Binary Code C ASCH Code Enable online change FTP MC Protocol Disable direct connection to MELSOFT Do not respond to search for CPU Built in Ethernet port on network Set if it is Default Changed Figure 8 Built in Ethernet Port Setting for Acting as a Communication Server 3 Select a communication channel to be used to receive the connection requests and data requests a b Open System Fullpassive TCP Socket Communication TCP Connection Unpassive IP Address Port No Input Format DEC Host Station Destination TCP y Socket Communication y Unpassve ow 8197 TCP y MELSOFT Connection y v PANA MELSOFT Connection MELSOFT Connection v TCP v TCP v TCP v 7
36. rite data to the PLC for monitoring analyses and for managing production e Socket Communication o Selecting the Socket Communication enables an external device to communicate with the PLC using dedicated instructions TCP Connection TCP Connection parameter is used for socket communication only and it is mainly used to define what kind of open operation i e establishing a TCP connection is needed Two types of open operation Active open and Passive open are used for connecting to TCP e Passive Open the device waits for a TCP Connection Request from external devices with a specified port number e Active Open the device establishes a TCP connection with an external device by sending a connection request to the device with a specific TCP port number Once the TCP connection is established communication between the devices becomes possible through the established connection e When TCP MC Protocol Connection or UDP MC Protocol Connection is selected the TCP Connection parameter does not need to be configured Custom Solutions Center e TCP Socket Communication O Active The PLC is the device initiating the TCP Connection open operation to the external device It is considered to be a client in the communication Unpassive The PLC is the device waiting for a TCP Connection request from external devices Selecting Unpassive allows the PLC to accept connection requests from any externa
37. roject Navigation Pane An example is shown in the figure below PLC Name PLC System PLC Fie PLCRAS Soot File Program SFC Device 1 0 Assignment uustipia CPU Setting Bulltin Ethernet Port Setting a Switch Setting Detailed Setting Leaving this setting blank wil not cause an error to occur Base Setting 1 al te Base Mode C Auto Detal 8 Slot Default 12 Sot Default Setting should be set as same when using multiple CPU Import Multiple CPU Parameter Read PLC Data Print Window Print Window Preview Admowledge XY Assignment Defaut check End Cancel Figure 3 I O Assignment Screen e Network Number A Mitsubishi PLC system can support multiple networks with different types A network number is assigned to each network as its designation and to distinguish it from other networks in the system The Network Number range is from 1 to 239 e Group Number Group number is used to classify a number of QCPU stations into a specific group By designating a group number data can be communicated with multiple QCPU stations using the same group number Custom Solutions Center e Station Number A unique station number is assigned to each communication device on a particular network as defined by the Network Number Station Number range is from 1 to 64 Selecting the Operation Setting will display the configuration screen as shown in Figure 4 rere Operaen tg E Comm
38. s the most common configuration Pair Open The two options for this parameter are Enable and Disable When Enable is selected the Ethernet module will automatically allocate the next channel to be the Paired Channel with the channel that is being configured One will be configured as the Send buffer and the other Receive buffer For example if one is configuring Channel 4 to be TCP gt Active gt Receive gt No Procedure gt Enable the Channel 5 will automatically be assigned as the pair with Channel 4 and it will be configured to TCP gt Active gt Send gt No Procedure gt Enable The remaining parameters Existence Confirmation Host Station Port No Destination IP Address and Destination Port No will be configured to be the same for both channels automatically e changes of these parameters for Channel 4 will be reflected to Channel 5 automatically Existence Confirmation This setting selects whether or not the Ethernet module should confirm that an external device still operates normally when there is no communication for a fixed period of time The connection with the external device must be opened first The two options for this parameter are Confirm and No Confirm e No Confirm o The confirmation of the existence of an external device is not required Custom Solutions Center Confirm o The confirmation of the existence of an external devic
39. so that the data can be received properly Since the channel is intended to be used as a client and is the one responsible for establishing the connection and initiate data transfer requests the parameter settings should be Protocol TCP Open System Socket Communication TCP Connection Active Host Station Port No 8198 Destination IP Address 192 168 3 117 Destination Port No 4571 Custom Solutions Center Built in Ethernet Port Open Setting fom Built in Ethernet Port Open Setting IP Address Port No Input Format DEC bd Desti U jn IP Address Port No 8198 192 168 3117 4 IP Address and Port No will be displayed by the selected format IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number Please enter the value according to the selected number End Cancel Figure 29 Open Setting for Acting as a MC Protocol Client 4 2 2 Using a QJ71E71 100 Module Ethernet TCP IP Yt TCP Packets ae ner la A A Y 31 Party TCP IP Server a a Cd muaa p m Mitsubishi PLC as a Client e QJ71E71 100 IP 192 168 3 117 Figure 30 Example of a Communication Client Using the Ethernet Module The steps that are necessary to configure the Ethernet modul
40. t Port cvcciccisccesccecsssccccssscccoussesics eoeceussdeacessseneeevenenedsseeeesestevsesdensbecdee esdeodsseneds 24 1 2 2 Using a OF TE ZT AOO MO stance ce leaiceiacaseionscateacenaseraseccuinnccacd nea vacsueeaiaveseregcwdieawaccincusaadeadiancieraueedigeaseus 26 Se Appendix EX tenet ie te ter en eater Mere peer Pte ce A AA oe ce eee en ee eee 29 Custom Solutions Center FURTHER READING REFERENCE LIST Mitsubishi Q Corresponding MELSEC Communication Protocol Reference Manual SH NA 080008 K QnUCPU User s Manual Communication via Built in Ethernet Port SH NA 080811ENG D Q Corresponding Ethernet Interface Module User s Manual Basic SH NA O80009 O0 1008 MEE MEAU Custom Solutions Center Ethernet TCP Communication FBs Quick Start Guide V1 0 MEAU Custom Solutions Center Ethernet MC Protocol Communication FBs Quick Start Guide V0 2 Custom Solutions Center Document Management Information Revised By November 2 2011 1 0 Q_ENET_Comm Initial Release MEAU Custom Solutions Center Custom Solutions Center 1 Introduction The purpose of this document is to describe the basic steps that are required to configure a Mitsubishi PLC for the following four Ethernet communication scenarios e configuring the Mitsubishi PLC to be a server in order to respond to TCP IP socket communication commands from Ethernet clients for connection handling and data transfer e configuring the Mitsubishi PLC to be a client to initiate TCP
41. ta the subheader data length etc are not included in the message and only the data in the fixed buffer is sent When receiving data all the data in the message excluding the Ethernet header is stored in the fixed buffer f the external device is a third party device using simple socket communication No Procedure should be selected since it allows sending and receiving data matching the message format of the external device o A response to data receiving is not sent o Communication is performed using binary code regardless of the communication data that is set in the Operational Settings o The maximum application data area is 2046 bytes per communication o Random access buffer communication and communication using the MC protocol cannot be used at the same time o The fixed buffer communication uses dedicated connections o The PLC and external devices can communicate one to one or one to n using UDP multicasting o The handshaking with an external device must be performed using a sequence program When using the TCP and MC Protocol communication function blocks published by the Custom Solutions Center the channels should be configured to be No Procedure The MC Protocol FBs from the Custom Solution Center actually packages the MC Protocol command and response frames within the fixed buffer for use Please refer to the MC Protocol FB Quick Start Guide for more information For most other applications No Procedure i
42. th in bytes 7 1 6 6 2 46 1500 address address and data S Preamble o Destination Source Length 802 2 header a SOF Start of frame delimiter FCS Frame check sequence In most cases select the Ethernet V2 0 frame type e Enable Online Change O Checking this checkbox will enable the selected data in the CPU module to be changed online by an external device when it communicates the proper commands to the PLC through the use of MC Protocol When using TCP IP socket communication this box does not affect the operation but it is better to be un checked e TCP Existence Confirmation Setting O O KeepAlive enables a heartbeat frame to be sent and acknowledged between the two systems that are connected and have an active TCP connection established The Ethernet module performs an existence check by sending an ACK message to a remote device with which communication has not been performed for a certain period of time and waiting to see whether or not a response is received When the heartbeat signals are active the connection is alive and well This method is used for a connection opened via the TCP IP protocol This setting is ignored if the Ethernet module that the QJ71E71 is communicating to does not support the KeepAlive check function Ping will be used to check the confirmation of the connection When Use the Ping is selected the Ethernet module performs an existence check by sending a PING c
43. unication Data Code Initial Timing g Do not wait for OPEN Communications impossible at STOP time ASCII Code Always wait for OPEN Communication possible at STOP time IP Address Setting Send Frame Setting Input Format DEC v Ethernet V2 0 IP Address 192 168 IEEE802 3 V Enable Online Change TCP Existence Confirmation Setting Use the KeepAlive C Use the Ping End Cancel Figure 4 QJ71E71 Operating Setting Screen e Communication Data Code o The Communication Data Code should be configured to use Binary instead of ASCII in most cases since most third party devices are communicating using binary instead of ASCII e Initial Timing o Do Not Wait For OPEN Communications impossible at STOP Time When this bullet is selected a TCP IP connection must be established and closed using PLC sequence logic code to handle the opening and closing of the connection Thus the TCP IP communication cannot be performed when the PLC is in the STOP mode since the sequence program required to handle the communication connection is not executing This also means that the PLC communication module will most likely be taking a more active role in communication e it will be the initiator to establish the connection and close the connection o Always Wait for OPEN Communication possible at STOP Time When this bullet is selected the PLC communication module is more passive and waiting for an externa
44. used as a client and is the one responsible for establishing the connection and initiate data transfer requests the parameter settings should be Protocol TCP Open System Socket Communication TCP Connection Active Host Station Port No 8198 Destination IP Address 192 168 3 117 Destination Port No 4571 Built in Ethernet Port Open Setting 7 Built in Ethernet Port Open Setting IP Address Port No Input Format Dec b Dest natu Protocol Port No IP Address Port No Port No P Address Port No 8198 192 168 3 117 4 Socket Communication w JActwe v 8198 192168 3117 4571 IP Address and Port No will be displayed by the selected format IP Address and Port No will be displayed by the selected format Please enter the value according to the selected number Please enter the value according to the selected number End Cancel end Cancel Figure 17 Open Setting for Acting as a Communication Client Custom Solutions Center 3 2 2 Using a QJ71E71 100 Module Ethernet TCP IP TCP Packets 6 1 WE Aia bose ret 3 Party TCP IP Server Mitsubishi PLC as a Client QJ71E71 100 IP 192 168 3 117 Figure 18 Example of a Communication Client Using the Ethernet Module The steps that are necessary to configure the Ethernet module QJ71E71 100 for the PLC to act as a client and the required Ethernet Module Operation Setting parameters are listed below 1
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