Schneider Electric 174 CEV - Manuals

1 Modbus Plus to Ethernet Bridge 174 CEV 200 30 H Introducing the Ethernet to Modbus Plus Bridge H Bridge Message Transactions and Paths H Specifications 1

Modbus Plus to Ethernet Bridge 2 1.1 Introducing the Ethernet to Modbus Plus Bridge The Modicon Ethernet to Modbus Plus Bridge provides a transparent multipath connection between Ethernet host applications and the Modbus Plus industrial network. The bridge functions as an addressable node on each ne...

Modbus Plus to Ethernet Bridge 3 Figure 1 Bridge Overview BRIDGE 8 Data Paths TCP/IP Modbus Plus BP85 Modbus Plus Bridge Ethernet Modbus Plus Modbus Plus Additional Networks Interface Interface 8 Program Paths The bridge maintains two internal mapping tables that provide address mapping between IP a...

Modbus Plus to Ethernet Bridge 4 1.2 Bridge Message Transactions and Paths Two types of messages can be initiated to Modbus Plus nodes using Modbus commands. Programming messages are used for logging into a node and controlling it, as in load/record/verify operations. Data access messages are used t...

Modbus Plus to Ethernet Bridge 5 Table 2 Summary of Modbus Data Access Commands Function Code (Decimal) Command Name 1 Read Discrete Output Status (0xxxx) 2 Read Discrete Input Status (1xxxx) 3 Read Output Register (4xxxx) 4 Read Input Register (3xxxx) 5 Force Single Coil (0xxxx) 6 Preset Single Reg...

Modbus Plus to Ethernet Bridge 6 1.3 Specifications Table 4 Power Input Tolerance Current 110 V ac (--15% +10%) 47--63 Hz 94--121 V ac Inrush 15 A at 115 V ac Operating 1 A nominal 220 V ac (--15% +10%) 47--63 Hz 187--242 V ac 30 A at 230 V ac Operating 1 A nominal The bridge automatically senses th...

9 Installing the Bridge Hardware H Overview: Hardware Installation H Setting the Modbus Plus Node Address H Setting the Ethernet Connector Jumper H Mounting the Bridge Hardware H Connecting the Network and Power Cables H CE Installation Requirements H Verifying the Network Communication H Factory De...

Installing the Bridge Hardware 10 2.1 Overview: Hardware Installation Here is an overview of the tasks for installing the bridge hardware. The references are to the sections in this chapter that contain the detailed installation steps. Setting the Modbus Plus Node Address (Section 2.2) Before instal...

Installing the Bridge Hardware 12 2.2 Setting the Modbus Plus Node Address Do not apply power to the bridge yet. Remove the four screws securing the enclosure cover, and remove the cover. Figure 2 Bridge Enclosure Screws Remove Screws Remove Screws Locate the Modbus Plus card as outlined in Figure 3...

Installing the Bridge Hardware 13 The bridge is shipped with the switches set of a default address of 1 (all switches in the 0 (zero) position, closest to the card surface). Set the Modbus Plus address switches 1--6 to the address in your application. Switches 7 and 8 are not used. Switch 1 is the l...

Installing the Bridge Hardware 14 2.3 Setting the Ethernet Connector Jumper Do not apply power to the bridge yet. The bridge has three types of Ethernet connectors: H IEEE 802.3 10Base--T UTP cable (RJ--45) H IEEE 802.3 10Base--5 thick cable (AUI) H IEEE 802.3 10Base--2 thin cable (BNC) A jumper on ...

Installing the Bridge Hardware 16 2.4 Mounting the Bridge Hardware Replace the bridge enclosure cover. Do not apply power to the bridge yet. The bridge is supplied with two mounting brackets. Install them on the bridge’s side or bottom panel as shown in Figure 5, using the screws provided. If you us...

Installing the Bridge Hardware 18 2.5 Connecting the Network and Power Cables Before connecting the power cable, connect the Ethernet and Modbus Plus network cables. Refer to the rear panel layout in Figure 7 and the panel detail in Figure 8 for locations of the connectors. For information about Mod...

Installing the Bridge Hardware 20 2.6 CE Installation Requirements If the bridge is being installed at a site that must meet CE requirements, the following steps must be taken to complete the installation. Grounding The bridge must be provided with a direct ground connection of 0.1 ohm or less. Moun...

Installing the Bridge Hardware 21 2.7 Verifying the Network Communication Refer to Figure 8 for the locations of the bridge’s indicators. 2.7.1 Ethernet Card Indicators The Ethernet card has an indicator that shows a valid connection between the card’s RJ--45 (UTP) jack and the network. It has anoth...

Installing the Bridge Hardware 22 2.8 Factory Default Settings This information is provided to allow the installer to restore the factory default settings, in case one of them is altered inadvertently. 2.8.1 Ethernet Card Defaults The only user--configurable setting on the card is in jumper JP2 for ...

Installing the Bridge Hardware 23 2.8.2 Modbus Plus Card Defaults This card contains two sets of switches. As you view the card at its top edge, the I/O Base Address switches are located nearest to the end of the card. These switch settings should not be changed. The only user--configurable setting ...

Installing the Bridge Hardware 24 2.9 Periodic Maintenance Periodic maintenance consists of cleaning of the bridge’s two internal air filters. This should be done at least once per year, and more often as required by the bridge’s environment. Figure 12 Location of Air Filters Air Filter (behind Vent...

25 Configuring the Bridge H Files Supplied With the Bridge H Overview: Software Configuration H Configuration With a BOOTP Server H Configuration With the Internal CFGUTIL Utility H How Mapping Works: TCP/IP to Modbus Plus H Setting the Mapping: TCP/IP to Modbus Plus H How Mapping Works: Modbus Plus...

Configuring the Bridge 26 3.1 Files Supplied With the Bridge The bridge is shipped with its application software pre--installed. A Host Software disk is provided containing files for managing the bridge application at a host PC. 3.1.1 Files Resident in the Bridge These files are pre--installed and r...

Configuring the Bridge 27 3.1.3 Files Generated or Modified by the Bridge When the bridge is configured using the CFGUTIL program, it writes ASCII text files that record the bridge’s current configuration and network mapping. The files are retained in the bridge and referenced for configuration on s...

Configuring the Bridge 28 3.2 Overview: Software Configuration Here is an overview of the tasks for configuring the bridge. The references are to the sections of this guidebook that show the detailed installation steps. 3.2.1 Setting the Ethernet Configuration Configure the bridge’s IP address and o...

Configuring the Bridge 29 3.3 Configuration With a BOOTP Server If a BOOTP server is available, you can use it to configure the bridge remotely. You will need the MAC address of the bridge. The MAC address is marked on a label on the bridge’s rear panel. Note the address and give it to your server s...

Configuring the Bridge 30 3.4 Configuration With the CFGUTIL Utility If a BOOTP server is not available, you can configure the bridge locally using its internal CFGUTIL.EXE utility. Set the bridge power switch to 0 (OFF). Refer to the connector panel detail in Figure 8 and connect a keyboard and VGA...

Configuring the Bridge 31 3.4.3 Required Configuration Fields The following two fields require your entries for the bridge to function properly. Contact your Ethernet network administrator to obtain this information: H IP Address H Net Mask 3.4.4 Additional Configuration Fields These four fields may...

Configuring the Bridge 32 3.5 How Mapping Works: TCP/IP to Modbus Plus Each Modbus Plus message destination is defined by a five--byte Modbus Plus routing path. The use of the path is specific to each type of Modbus Plus device. Refer to the guidebooks supplied with your Modbus Plus devices for deta...

Configuring the Bridge 33 3.5.2 Destination Indexes 0 and 254: Dynamic Message Routing The bridge provides a means for dynamic routing of messages at runtime. Dynamic routing applies only to messages initiated from TCP/IP hosts, and requires the host to configure the bridge at runtime (to Destinatio...

Configuring the Bridge 34 3.6 Setting the Mapping: TCP/IP to Modbus Plus As you design your application you should define a Destination Index value (1 ... 249) for each Modbus Plus node to which your Ethernet host will originate messages. Edit the bridge’s mapping table to correlate each Destination...

Configuring the Bridge 35 Figure 15 Example: TCP/IP to Modbus Plus Mapping Use your Tab key to select the MB+ Mapping table. Use your cursor ‘arrow’ keys, Page Up, and Page Down to scroll through the table. F2 displays Help. 3.6.2 Entry Example: MB+ Mapping Table In Figure 15, entry MBP_3 shows an e...

Configuring the Bridge 36 3.7 How Mapping Works: Modbus Plus to TCP/IP The bridge contains an internal Modbus Plus to TCP mapping table with 255 entry fields, each containing an IP address. Each message received by the bridge from a Modbus Plus node contains a five--byte routing path field as shown ...

Configuring the Bridge 37 Figure 17 shows an example of the mapping of a message between two Modbus Plus nodes through a pair of Ethernet bridges. Figure 17 Example: Linking Modbus Plus Networks Through Ethernet Bridges Bridge Bridge Modbus Plus Ethernet Originating Node Destination Node Node 25 Nod...

Configuring the Bridge 38 3.8 Setting the Mapping: Modbus Plus to TCP/IP Each message from a Modbus Plus node contains a five--byte routing path field (See Section 3.7). The bridge uses the third byte to index into its TCP Mapping table, extracting an IP address from that entry. You can edit the tab...

Configuring the Bridge 39 Figure 18 Example: Modbus Plus to TCP/IP Mapping Use your Tab key to select the TCP Mapping table. Use your cursor ‘arrow’ keys, Page Up, and Page Down to scroll through the table. F2 displays Help. 3.8.2 Entry Example: TCP Mapping Table In Figure 18, location TCP_10 shows ...

Configuring the Bridge 40 3.9 Dynamic Routing of Messages In addition to the mapped routing of messages from TCP/IP to Modbus Plus, messages can be dynamically routed in this direction at runtime. Dynamic routing is available only to connections initiated fromTCP/IP. The bridge reserves three Destin...

Configuring the Bridge 41 3.9.2 Using Dynamic Routing First setup the bridge for Host--based or Socket--based routing. The bridge will now associate messages from the host’s IP address with the Modbus Plus path you established, when you address those messages to the Destination Index defined for the...

Configuring the Bridge 42 3.10 Clearing the Bridge’s Configuration You may want to clear the bridge’s current setup: its IP configuration and mapping tables. For example, if you intend to reinstall the bridge into a different application you may wish to assign a new configuration to the bridge for t...

43 Using the Bridge Software H Bridge Software Contents: SW--MBPE--000 H Using the Software in Custom Configurations 4

Using the Bridge Software 44 4.1 Bridge Software Contents: SW--MBPE--000 The bridge software is available as Schneider part number SW--MBPE--000 for custom bridge hardware configurations. It is on two 3.5--inch (1.44 MB) disks. 4.1.1 Bridge Software Disk (31000020) The Bridge Software disk provides ...

Using the Bridge Software 45 4.2 Using the Software in Custom Configurations The bridge software can be used in custom configurations in which you supply your own PC and network interface hardware. 4.2.1 Minimum Requirements for Custom Bridge Configurations Minimum requirements for custom bridge con...

Using the Bridge Software 46 H Make sure your Ethernet packet driver program will be called as it was setup by the driver installation. Refer to your driver guidebook to ensure that it will be called properly. The driver may be called from your AUTOEXEC.BAT or CONFIG.SYS file. Note that you can also...

47 Uploading and Downloading Files H Configuring an HTTP server H Uploading Files to a Host H Downloading Files from a Host 5

Uploading and Downloading Files 48 5.1 Configuring an HTTP Server To upload and download files between your host computer and the bridge, you will need an HTTP server application running in the host. The server must have a cgi--bin directory immediately below the root directory. Here is a path examp...

Uploading and Downloading Files 49 H Under the ‘Virtual Directory’ box there is a ‘Directory Alias’ box. Enter: /cgi-bin in the ‘Directory Alias’ box. H Under the ‘Access’ box check ‘Read’ and ‘Execute’. Click OK. H Close the window with File --> Close. Click OK. H Copy the program DWNLD.EXE from...

Uploading and Downloading Files 50 5.2 Uploading Files to a Host Before initiating your first upload: H Install an HTTP server on the host machine and configure it as described in Section 5.1. H Copy the program DWNLD.EXE from the host software diskette to the HTTP cgi--bin directory you have config...

Uploading and Downloading Files 51 H In the Modbus command to the bridge, perform a register write to register 11 in the bridge. Write the host URL as data into that register. The URL can be in the absolute IP address form: 205.167.7.0/cgi-bin/<filename> or it can be in the form: //<host_na...

Uploading and Downloading Files 52 5.3 Downloading Files to the Bridge Before initiating your first download: H Install an HTTP server on the host machine and configure it as described in Section 5.1. H Copy the program DWNLD.EXE from the host software diskette to the HTTP cgi--bin directory you hav...

Uploading and Downloading Files 53 H In the Modbus command to the bridge, perform a register write to register 8 in the bridge. Write the host URL as data into that register. The URL can be in the absolute IP address form: 205.167.7.0/<filename> or it can be in the form: //<host_name/domain...

Diagnostic Tools 56 6.1 Diagnostics Overview The bridge contains software tools for diagnosing communication problems on both the Ethernet and Modbus Plus network. Here is how you can approach a suspected problem to localize it to one of the network interfaces. 6.1.1 Logging the Bridge’s Activity Be...

Diagnostic Tools 57 6.1.3 Modbus Plus Diagnostics If you can communicate with the bridge from your Ethernet host, but cannot pass messages to Modbus Plus nodes, you can test the bridge’s communication on Modbus Plus. MBPSTAT Use the bridge’s MBPSTAT diagnostic to check Modbus Plus communication. MBP...

Diagnostic Tools 58 6.2 Logging the Bridge’s Activity Before running diagnostics you can build a log of the communication activity performed by the bridge. This can help you to determine the kind of diagnostics you may want to run. You can set the bridge to log all traffic initiated on either its Et...

Diagnostic Tools 59 6.2.1 Notes for Logging Mode A: Channel Logging Menu When you invoke the Channel Logging mode A (On) or a (Off), you will be prompted with the message: Enter M for MBP initiated sessions T for TCP initiated sessions B for both Session initiator? _ Enter: M to select sessions init...

Diagnostic Tools 60 6.3 TCPINFO TCPINFO is provided to diagnose BOOTP server problems. If you have a BOOTP server and cannot access the bridge from it, run TCPINFO in the bridge and try to access the bridge again. The program is run from the bridge’s command line. Setup If a keyboard and monitor are...

Diagnostic Tools 61 6.5 PING PING is a utility program you can use to check Ethernet connections between the bridge and other IP addresses. 6.5.1 Starting PING at the Bridge PING can be run from the bridge’s command line. You can get the command line prompt by initializing the bridge without a conne...

Diagnostic Tools 62 6.6 MBPSTAT MBPSTAT is the Modbus Plus network diagnostic utility. You can use it to view a list of active nodes, monitor network activity, and record a node’s error statistics. 6.6.1 Starting MBPSTAT MBPSTAT is run from the bridge’s command line. You can get the command line pro...

Diagnostic Tools 64 6.7 Your MBPSTAT Menu When MBPSTAT starts, your Options menu appears. The bridge’s node address is at the top of the menu, together with the network routing path being analyzed. Figure 21 MBPSTAT Menu MODBUS PLUS NETWORK STATUS version 2.10Node: 30 Adapter: 0 Routing: 22 24 00.00...

Diagnostic Tools 65 6.8 Option 1: Set Routing Parameters Figure 22 Set Routing Parameters MODBUS PLUS NETWORK STATUS version 2.10Routing Information MODBUS PLUS Adapter 1 identified as node 30. Enter ROUTING path first byte : This option lets you specify a new routing path without having to restart ...

Diagnostic Tools 66 6.9 Option 2: Monitor Network Activity Figure 23 Monitor Network Activity MODBUS PLUS NETWORK STATUS version 2.10Global Data Activity, strike any key to exit. Adapter: 1 Success: 60 Failure: 0 C0 200 C0 300 C0 532 C1 600 C1 700 BP 2200 BP 2400 H3 000 BM 6400 Node types listed abo...

Diagnostic Tools 67 6.10 Option 3: Read Global Data Figure 24 Read Global Data MODBUS PLUS NETWORK STATUS version 2.10Global Data Adapter: 1 Success: 3319Failure: 0 Information from node 5 (05.00.00.00.00) 1C1B 1E1D 201F 2221 2423 2625 2827 2A29 2C2B 2D2C 2F2E 3130 3332 This option continuously read...

Diagnostic Tools 68 6.11 Option 4: Global Data Present Table Figure 25 Global Data Present Table MODBUS PLUS NETWORK STATUS version 2.10Global Data Present Bit Map Adapter: 1 Success: 16421Failure: 0 0 2 1 6 1 7 3 0 Information from node 5 (05.00.00.00.00) This option displays a map table of the nod...

Diagnostic Tools 69 6.12 Option 5: Node Active Station Table Figure 26 Node Active Station Table MODBUS PLUS NETWORK STATUS version 2.10Node Activity Bit Map Adapter: 1 Success: 115Failure: 0 0 2 1 6 2 2 2 4 6 4 Information from node 5 (05.00.00.00.00) 0 3 1 7 3 0 This option continuously queries th...

Diagnostic Tools 70 6.13 Option 6: Node Error Statistics Figure 27 Node Error Statistics MODBUS PLUS NETWORK STATUS version 2.10Node Error Counters, Press SPACE to clear. Adapter: 1 Success: 182Failure: 0 Information from node 5 (05.00.00.00.00) 0 Pre-transmit deferral error counter 0 Receive buffer...

Diagnostic Tools 71 6.14 Option 7: Token Station Table Figure 28 Token Station Table MODBUS PLUS NETWORK STATUS version 2.10Token Station Table Bit Map Adapter: 1 Success: 165 Failure: 0 0 2 0 3 1 6 1 7 2 2 2 4 3 0 6 4 Information from node 5 (05.00.00.00.00) This option displays a map table of the ...

Diagnostic Tools 72 6.15 Option 8: Token Owner Work Table Figure 29 Token Owner Work Table MODBUS PLUS NETWORK STATUS version 2.10Node Token Owner Bit Map Adapter: 1 Success: 208Failure: 0 Information from node 30 (30.00.00.00.00) 1 2 3 4 5 6 7 8 1 Data-master token ownerData-master get-master-respo...

Diagnostic Tools 73 6.16 Option 9: Current Internal Path Transactions Figure 30 Current Internal Path Transactions MODBUS PLUS NETWORK STATUS version 2.10Node Transaction Counters, Press SPACE to clear. Adapter: 1 Success: 62 Failure: 0 Information from node 30 (30.00.00.00.00) PATH 1 2 3 4 5 6 7 8 ...

Diagnostic Tools 74 6.17 Option 10: Node Personality Figure 31 Node Personality MODBUS PLUS NETWORK STATUS version 2.10Node Personality Adapter: 1 Success: 108Failure: 0 Information from node 30 (30.00.00.00.00) Node Number = 30 Node Type = Host Software version = 2.00 Network address = 30 MAC state...

75 Message Examples H MSTR Example: TCP/IP Node H MSTR Example: Modbus Plus Node 7

Message Examples 76 7.1 MSTR Example: TCP/IP Node This example shows a Modicon Modsoft screen for an MSTR function in a TCP/IP node. It writes one register of data to a destination node on Modbus Plus. H The MSTR Function Code specifies a Write operation. H One register of data is to be transferred....

79 NCB Return Codes H Network Control Block (NCB) Return Codes 8

NCB Return Codes 80 8.1 Network Control Block (NCB) Return Codes The bridge returns the following codes into the NCB_RETCODE field. Note that some application programs such as Modsoft may not map these codes to the correct error message. ERR_success 0 /* NCB command completed normally */ ERR_bad_buf...

81 Glossary address On a network, the identification of a station. In a frame, a grouping of bits that identifies the frame’s source or destination. API Application Program Interface. The specification of functions and data used by one program module to access another; the programming interface that...

Glossary 85 UDP User Datagram Protocol. A protocol which transmits data over IP. URL Uniform Resource Locator. The network address of a file. UTP Unshielded Twisted Pair. A type of cabling consisting of insulated cable strands which are twisted together in pairs. Winsock The Microsoft implementation...