Datalogic Scanning DS4300 manual RS485 Half-Duplex, Multiplexer

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DATALOGIC

DS4300

RS485 Half-Duplex

The RS485 half-duplex (3 wires + shield) interface is used for polled communication protocols.

It can be used for Multidrop connections in a master/slave layout or with a Datalogic Multiplexer, (see par. 2.6.4 and 2.6.5).

The following pins of the 25-pin connector are used for RS485 half-duplex communications:

Pin	Name	Function

2	RTX485+	RS485 transmitted/received data +
4	RTX485-	RS485 transmitted/received data -
7	SGND Main	signal ground main interface
	DS4300	MULTIPLEXER

2RTX485+

4RTX485-

7SGND Main

RTX485+

RTX485-

RS485REF

Figure 2.16 - RS485 half-duplex connections

Installation - 2.13

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Contents Page Installation Manual DS4300Datalogic S.p.A DS4300-XXXX, Laser Scanner and all its modelsContents Maintenance Guide to Installation DS4300 General ViewFigure B Laser Safety Safety PrecautionsStandard Regulations Laser diode class label Power Supply General Features IntroductionStandard Application Program ProgrammabilityDescription Red, indicates the reader is connected to the power supply Available Models AccessoriesDS4300 Installation Package ContentsMechanical Installation Overall dimensionsJunction BOX Installation Junction Box MountingJunction box mounting Junction Box Electrical Connections System cable connections to the junction boxBOX pinout for DS4300 Pin Name Pin RS232 RS485 MA CL Full-duplexScanner cable connections to the junction box Pin D-sub connector pinout Name Function Electrical Connections for 25-PIN ModelsPower Supply DS4300Main Serial Interface RS232RS232 Pin Name Function13 RS232 main interface connections RS485 Full-Duplex 15 RS485 full-duplex connectionsRS485 Half-Duplex MultiplexerChassis MA Current Loop INT-24 Accessory Only ClinAuxiliary RS232 Interface InputsEXT TRIG+ 22 Input PNP command using external power Outputs 24 Open collector output connectionPositioning 25 Pitch angleTypical Layouts Point-to-PointPass Through DS4300 Host Main serial interface3 RS232 Master/Slave 30 RS232 Master/Slave layout4 RS485 Master/Slave HostMultiplexer 32 Multiplexer layoutThis page is intentionally left blank Installation Reading Features Advanced Code ReconstructionTilt Angle for Advanced Code Reconstruction Tilt angleStep Ladder Mode Decoding Capacity in Linear ModeSN = LH/LS * SS Picket Fence Mode SN = FW-LW/LS * SSPerformance Reading Diagrams DS4300-100X Code Resolution StandardDS4300-100X Code Resolution High Code Resolution HighThis page is intentionally left blank Reading Features Maintenance CleaningThis page is intentionally left blank Maintenance Technical Features Reading Features NoteSoftware Features