RS-232 Port Combiner Model 232PTC Introduction Electronics'

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RS-232 Port Combiner Model 232PTC Introduction Electronics'

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Documentation Number 232PTC3401
RS-232 Port Combiner
Model 232PTC
Introduction Electronics' Model 232PTC permits more serial devices share serial port host computer. When devices either slave ports transmits data, captures data path master port locks other slave port. When data transmission finished, either slave port gets access master port being first start sending data. line also used control data flow master port. 232PTC cascaded combine many devices needed into host port. typical application would share host port with several terminals, scanners, scales, other devices that only need access host port occasionally shown Figure Operation Data flow from master port slave ports data that sent line, master port, broadcast both slave ports under conditions. This data appears each slave port. Data flow from slave ports master port Data that sent line (pin slave ports must compete path master port. There methods capturing path master port, automatic data sensing. first slave port either raise line transmit data captures path master port. path will locked that slave port until either lowers line, milliseconds after transmission. Note that 232PTC does buffer data, data sent opposite slave port during this period will lost. 50ms timeout period modified, contact B&B's technical support further information.
Slave Port Host Computer
Master Port 232PTC Slave Port
Code Scanner Terminal
Handshake Signals Figure Application Example signal each slave port indicates slave devices path master port available. slave port's line high, data received that port will transmitted master port. low, opposite slave port captured path master data inactive slave port will lost. example, both slave ports inactive have low, will high both slave ports, indicating that path available. soon slave port captures path either beginning transmission raising line, signal opposite slave port will drop state. output master port follows signal level found active slave port. Pinouts ports 232PTC configured RS-232 ports, using DB25 female connectors. Note that null-modem type connection will required connect 232PTC other configured ports. Tables Figure show configuration each port.
Table Master Port Pinouts Signal Direction Input Output Output -12VDC -Table Slave Port Pinouts Signal Direction Input Output Input Output -12VDC -5VDC
1996 Electronics Revised September 2001
This product designed manufactured domestic imported parts
Documentation Number 232PTC3401
Port
12VDC 5VDC Ground
Master Port
Port
Control Circuitry
232PTC Port Diagram addition standard RS-232 signals, power available power devices connected 232PTC. unregulated 12VDC power brought three connectors. addition, regulated 5VDC brought slave ports. total 225mA drawn from supply. total 325mA drawn from supply. total current drawn from unit must less than 325mA.
Important: connect your RS-232 cables power being used. Cascading Port Combiners Port combiners cascaded connecting master port each successive unit slave ports preceding unit. Each additional port combiner adds slave port system. Specifications Dimensions: Connectors: Power Supply: Current Draw: 5VDC Outputs: 12VDC Outputs: Operating Temp: Signals:
3.01" 3.40"x 0.58" (76.45mm 86.36mm 14.74mm) DB-25 female, RS-232 configuration 12VDC 500mA wall transformer (included) 175mA Slave ports 225mA max. total output Unregulated, ports DECLARATION CONFORMITY 325mA max. total output Manufacturer's Name: Electronics Manufacturing Company 0-50 Manufacturer's Address: P.O. 1040 Dayton Road (slave master only) Ottawa, 61350 indicates open channel (slave only) Model Numbers: 232PTC
Description: Type: Application Council Directive: Standards: RS-232 Port Combiner Light industrial equipment 89/336/EEC 50082-1:1998 50082-1 801(-3, 61000 (-2,
Michael Fahrion, Director Engineering
1996 Electronics Revised September 2001
This product designed manufactured domestic imported parts

RS-232 Port Combiner Model 232PTC Introduction Electronics'

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