Assessments - 1, GPA: 4
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The MES1A/B must use the same type of interface and serial parameters as that of the Modbus device it is connected to. MES1A Serial Interface Since the MES1A is designed with an RS-232 interface, its default Interface Type is RS-232. Although RS-422/485 four-wire and RS-485 two-wire options are given in the configuration menu, reconfiguring the MES1A for anything other than RS-232 will prevent the device from operating correctly. MES1B Serial Interface The MES1B is designed with an RS-422/485 interface and can be configured for four-wire operation or two-wire operation. Although RS-232 option is provided in the configuration menu, reconfiguring the MES1B for RS-232 will prevent the device from operating correctly. To configure Interface Type parameters: 29. At the Interface Type (1=RS232 2=RS422/RS485+4-wire 3=RS485+2-wire) (3) prompt: o To keep the current setting, press Enter o To select RS-422/RS-485 four-wire, type 2 o To select RS-485 two-wire, type 3 Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – Configuring the MES1A/B 30. To accept changes, press Enter When RS-422/485 four-wire operation is selected: When RS-422/485 four-wire operation is selected the RS-422/485 switch on the MES1B must be in the left position. When RS-485 two-wire operation is selected: • CP1 (configured in the next section under Modem/Configurable Pin Settings) must be enabled to ensure Send Data control is implemented. • The RS-422/485 switch on the MES1B must be in the right position. • The multidrop bus is connected to Terminals 3 [DataB(+) to TDB(+) terminal] and 4 [DataA(-) to TDA(-) terminal]. • No jumpers are required to bridge transmit and receive lines on the terminal block Serial Parameters MES1A/B Serial Parameters must be set up to match the parameters of the Modbus device connected to its serial interface. MES1A/B Serial Parameter options include: • Data rates from 300 bps to 115200 bps • 7 or 8 data bits • No, Even or Odd parity • 1 or 2 stop bits. To configure Serial Parameters: 31. At the Enter serial parameters (9600,8,N,1)prompt o To keep the current setting, press Enter o To change the serial parameters, type in new parameters in the format 9600,8,N,1 32. To accept changes, press Enter 3) Modem/Configurable Pin Settings There is only one configurable setting required in the Modem/Configurable Pin Settings section of the Configuration Menu. When configuring an Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – 27 Configuring the MES1A/B MES1B for RS-485 two-wire operation, the CP1 parameter must be set for RS485 Enable to ensure Send Data Control is implemented. No configuration is required in this section for MES1A converters. To configure RS485 Enable in the Modem/Configurable Pin Settings section: 33. Type 3 at the Select Command or parameter set (1..4) to change: prompt. The CP1 Function prompt appears. 34. Type 4 to select RS485 Enable 35. To accept the change, press Enter 36. Press Enter three more times to exit the Modem/Configurable Pin Settings section of the Configuration Menu. 4) Advanced Modbus Protocol Settings In the Advanced Modbus Protocol Settings section of the Configuration Menu you can configure: • whether the Slave Address is fixed or used as received • whether to Allow Modbus Broadcasts • whether to Use MB/TCP 00BH/00AH Exception Responses • whether to Disable Modbus/TCP Pipeline • Character Timeout values • Message Timeout values • Serial TX delay after RX values • whether to Swap 4x/0H to get 3x/1x register conversions Figure 18. Advanced Modbus Protocol Settings Menu Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001 B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – Configuring the MES1A/B Slave Address / Unit ID Source All devices connected to a TCP/IP network require a unique IP address. Each MES1A/B Converter has a unique IP address on the network, allowing messages to be directed to it. However, when multiple Modbus/RTU devices are connected to the RS-485 bus of an MES1B there must be a way to address them individually. Standard Modbus/RTU fields are encapsulated inside Modbus/TCP messages. Modbus/RTU’s Slave Address field is called the Unit ID in Modbus/TCP. The Unit ID is used to specify a particular Modbus/RTU devi...
Este manual também é adequado para os modelos :receptor e amplificador - MES1A (2.25 mb)