Battery-Powered RS-232 RS-422/485 Converter Model 485BAT3 Mo

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Battery-Powered RS-232 RS-422/485 Converter Model 485BAT3 Mo

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Documentation Number 485BAT32601
Battery-Powered RS-232 RS-422/485 Converter
Model 485BAT3
Model 485BAT3 features power versatility, making perfect field testing solutions. converts unbalanced RS-232 signals balanced RS-422 RS-485 signals. RS-485 enhanced version RS-422 standard, allowing multiple drivers receivers two-wire system. Power 485BAT3 powered three ways: batteries, port powered, power supply. battery power option when have power RS-232 port (found many laptops today) handshake lines when inconvenient power supply. Install batteries (not included) Battery On/Off switch position. 485BAT3 will draw much power possible from RS-232 port additional current necessary from batteries. have full power port your handshake lines, turn your battery switch. This allows fully port powered saves your batteries emergencies. your convenience there option stripped tinned +12VDC power supply. Simply attach terminal blocks plug Note: Battery On-Off switch 485BAT3 used conserving battery life. does turn power unit. Switches addition Battery On/Off switch described Power section above there 2-position dipswitch 485BAT3. position these switches determines whether signals terminal blocks RS-422 RS485. With both switches "Off" position unit will full duplex RS-232 RS-422 converter. With both switches "On" position, unit acts half-duplex R-232 RS-485 converter capable multidropping RS-485 side. When RS-422/RS-485 switch "RS-485" position, 485BAT3 uses bit-wise enable method control RS-485 driver. This means that RS-485 driver enabled with each high transmitted. This method requires handshake control activate deactivate driver. When RS-422/RS-485 switch "RS-422" position driver constantly enabled. Echo On/Off switch controls RS-485 receiver. When "On" position receiver constantly enabled. When this switch "Off" position receiver enabled only when RS-485 driver disabled 2-wire mode prevent transmitted data from echoing back RS-232 side. Connections RS-232 port female connector with pins (RD), (TD), (Signal Ground) supported. Pins (RTS) (CTS) tied together, pins (DSR), (CD), (DTR) also tied together. incoming data lines either high state used port power 485BAT3. more handshake lines available, longer battery life, more likely unit totally port powered. Table shows RS-232 pinouts. RS-485 port uses terminal blocks easy field wiring. A(-), B(+), A(-), B(+), Signal Ground lines supported. Figure shows interconnect RS-485 converters using wires. Figure shows interconnect RS-422 converters using four wires. Terminating resistors optional. They should used only long length runs high baud rates. These resistors should match impedance cable being used, which normally about ohms. receivers driven RS-485 driver, allowing together large systems with many drop points. using termination resistors, they should located opposite ends system.
Table RS-232 Pinouts Pinouts Description
Electronics Revised January 2002
This product designed manufactured domestic imported parts
Documentation Number 485BAT32601
485BAT3
Wire Device
AData AData
Wire Device
Rec.
Enable
Rec.
Enable
Figure Typical RS-485 Wire Setup Specifications
(9.0 115.2 kbps RS-232: DB-9 female (DCE) RS-485: terminal blocks Power Supply Options: Port powered 100mA batteries (not included) hours fully loaded with port power available hours typical Battery Life: Two-channel device (transmit receive only) Dimensions: Data Rate: Connectors:
Figure Typical RS-422/485 Four Wire Setup
DECLARATION CONFORMITY
Manufacturer's Name: Manufacturer's Address: Electronics Manufacturing Company P.O. 1040 Dayton Road Ottawa, 61350 485BAT3 RS-232 RS-422/485 Converter Light industrial equipment 89/336/EEC 50082-1:1998 61000 (-4-2, -4-3, -4-4, -4-6)
Model Numbers: Description: Type: Application Council Directive: Standards:
William Franklin III, Director Engineering
Figure 485BAT3 Functional Schematic
Electronics Revised January 2002
This product designed manufactured domestic imported parts

Battery-Powered RS-232 RS-422/485 Converter Model 485BAT3 Mo

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