B&B Electronics 485DSS manual Specifications, Port Configuration, RS-485/422 Port

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Specifications

Model:

485DSS

Size:

4.8"L x 2.15"W x 0.9"H

Power:

+11 to 16 Vdc 75mA

RS-232 Connection:

DB-25 male (DTE configured)

RS-485 Connection:

Terminal Blocks

Communications:

9600 baud, no parity, 8 data bits, 1 stop bit

Figure 2. Top View of Circuit Board

Port Configuration

The 485DSS has a RS-485/422 port and a RS-232 port. The RS-485/422 signals are on terminal blocks. Table 1 shows you the pinouts and Figure 2 shows you the location of the terminal blocks. The RS-232 signal, in the DTE configuration, connects to a DB25 male connector. Table 2 shows you the RS-232 pinouts.

RS-485/422 Port

The RS-485 port on the 485DSS receives and transmits data to and from the RS-485 network. The RS-485 port has a balanced differential line driver and receiver. RS-485 allows up to 32 driver and receiver pairs to share a two-wire party line network. This port will operate on a 4-wire network and is compatible with RS-422 devices. Refer to B&B Electronics’ free RS-422/485 Application Note for more information. Refer to Appendix C for cable charts.

2485DSS-0308 Manual

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 – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445

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Contents Internet Electronics Mfg. Co. IncDesigned and Manufactured Ottawa, Illinois 485DSS-0308 Manual CoverPage Table of Contents IiTable of Contents 485DSS-0308 Manual Checklist Hardware IntroductionSpecifications Port ConfigurationRS-485/422 Port RS-422/485 Port Terminal Block Signal Description Direction Signal Ground +12VDC Power Supply InputRS-232 Port Wire Mode Clear to Send Input Signal GroundRS-422/485 Wiring Frame Ground Transmit Data Output Receive Data InputComponent Values For Send Data Timing RS-485 Wiring Diagram Wire Mode Power Supply RS-422 Wiring Diagram RS-485 and RS-422 TerminationOperation Communication Configuration Distributed Smart Switch CommandsDecimal Command StringOn Command HexOFF Command Status Request CommandPage ACK Setting the 485DSS Address Address SwitchDIP Switch Binary File Transfer Software Description Appendix a Ascii Character Codes 485DSS-0308 Manual Appendix aPage Dec/Hex Conversions Decimal Hexadecimal SymbolAppendix B Decimal/Hexadecimal/Conversions 485DSS-0308 Manual Appendix BHexadecimal to Decimal Conversion Decimal to Hexadecimal ConversionRS-232 DTE Port DB25 Connector Direction Appendix C Cable ChartsChart 1. IBM PC DB25 Connector to 485DSS RS-232 DTE Port RS-232 DTE PortChart 6. RS-485 2-Wire Device to 485DSS RS-485/422 Port RS-485/422Device Direction Terminal Blocks
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