B&B Electronics MES1A, MES1B manual Modem/Configurable Pin Settings, Serial Parameters

Configuring the MES1A/B

30. To accept changes, press Enter

When RS-422/485 four-wire operation is selected:

When RS-422/485four-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 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

27