Quantum 890 USE 155 manual Modbus to Ethernet Bridge

Page 13

Modbus to Ethernet Bridge

Figure 3 shows an example of message address mapping between a Modbus Master and a Modbus Slave using two Bridges with an Ethernet link.

Figure 3 Mapping Modbus and IP Addresses

Modbus

Master

Ethernet

192.168.001.024

Modbus message to Slave address 10

Bridge

B

Bridge

A

Modbus ± IP Address

Mapping Entry:

010 : 192.168.001.024

Modbus

Slave(s)

Bridge routes message to Slave

according to user±defined setup:

Message Slave Address (10)

or

Fixed Slave Address (1 ... 247)

These are the events in the message routing:

HThe Modbus Master sends its message containing address 10 decimal to Bridge A.

HYou have set an entry in the mapping table in Bridge A. Your entry specifies that messages with address 10 are to be mapped to IP address 192.168.001.024.

HBridge B has that IP address and receives the message.

HDepending on the option you set in Bridge B, the message is routed either to the Modbus Slave device at address 10 as specified in the message, or to a fixed Slave address in the range 1 ... 247.

13

Image 13

Contents Modicon Page Breite 185 mm Höhe 230 mm Breite 178 mm Höhe 216 mm Page Data, Illustrations, Alterations PrefacePage Contents Glossary Using Panel SoftwareModbus to Ethernet Bridge CEV 300 Bridge Applications Introducing the Modbus to Ethernet BridgeBridging Between Multiple Modbus Networks Ethernet Overview Installation and ConfigurationMapping for a Modbus Master Mapping Modbus and IP AddressesMapping for a Modbus Slave Modbus to Ethernet Bridge Modbus Ethernet Front Panel LayoutComponent Name Purpose Power Parameter Specification SpecificationsAgency Approval Parameter Specification Page Installing the Bridge Hardware Mounting the Bridge on the DIN Rail Before You Install the BridgeMounting the Bridge Connecting the Power Wiring Connecting the Power WiringConnecting the Serial Cable RJ45 Port Connecting the Serial Cable RJ45 PortTSX Note Compatible Modbus Devices and CablesReferences in this figure are to the devices listed in on Modbus Cable PinoutsDB to RJ45 Adapter Kits DB9M 110 XCA 203 ±Wire Connecting the Serial Cable Wiring TerminalsRS±485 RS±485 / RS±422 Setting the Serial Port Switch Setting the Serial Port SwitchConnecting the Ethernet Cable Connecting the Ethernet CableConfiguring the Bridge Safety Configuration OverviewBefore You Start Example RS±232 Serial Terminal Emulator Properties Connecting by the RS±232 PortTelnet Host Requirement Connecting by Telnet IP Address Not AssignedExample Telnet Connection Connecting by Telnet IP Address AssignedConfiguration Menu Using the Configuration MenuModbus Master Device Additional Menu Items Viewing and Changing Configuration Parameters Configuration Options 1Commands Default settings, Save, Quit without save Retaining the Current ValueIP Address Option 1 Network/IP SettingsSet Gateway IP Address Set NetmaskConfiguring the Bridge Attached Device Option 2 Serial and Mode SettingsSerial Protocol Interface TypeRTS/CTS Mode Option 3 Modem Control SettingsExample Slave Address Option 4 Advanced Modbus Protocol SettingsMessage Timeout Character TimeoutAllow Modbus Broadcasts How the Address Mapping Works Option 5 Unit ID to IP Address Mapping TableExample Address Mapping Exiting the Mapping Menu Entering New Address MappingAdding a New Map Entry Deleting a Map EntryPage Using Panel Software Software Versions Using Concept or ModsoftModbus Slave Address Intellution FIX MMI Using Other SoftwareWinTech Modscan Worderware MMIPage Glossary Field Default gatewayFrame Framing typesLayer InternetMAC Address NetworkRepeater SwitchRouter ServerWinsock UTPPage United States France Germany