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pro bel Freeway RS422 Technical Manual

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The RS422 Port Router
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Removal and replacement of module
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Setting the level switch
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Setting the Higher Dest Decode switch
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Resetting the module
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Rear panel connections for RS422
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Breakout cable connections
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Summary of Contents for pro bel Freeway RS422

  • Page 1: Table Of Contents

    RS422 signal routing Parking Manual and Auto parking The RS422 Broadcast Router The RS422 Port Router Removal and replacement of module Expanding from 32 ports to 128 ports Setting the level switch Setting the Higher Dest Decode switch LED indications The Freeway control card Resetting the module Rear panel connections for RS422...

  • Page 3: N T R O D U C T I O N

    This manual covers the theory of operation and installation of the Freeway RS422 router card. The addition of this module to the Freeway product range gives considerable flexibility to new and existing router systems, giving the ability to route control signals with the associated video and audio signals within a single matrix frame.
  • Page 4 If used for controlling Pro-Bel panels and UMD’s, all daisy chained devices must be connected to one port and the controller to another. The terms Controller and Machine are used to determine which wires are used to receive (RX) and transmit (TX) signals. RS422 connections usually use 9 pin D type connectors, as follows: <<...

  • Page 5: Parking

    In such a situation it must be ensured that the data flow is not electrically contentious, i.e. data may be sent to all machines, but must only receive it from one. The Freeway RS422 router allows this mode of operation in an option called RS422 Broadcast Router.
  • Page 6 Operationally, it is the first route made between a machine and a controller that connects all four wires, and thereby provides the necessary responses. All subsequent machines connected to the controller will only connect two wires such that they receive commands but have no response connection: Controller as a source Router Machines as destinations...
  • Page 7 · a level configured as a broadcast router cannot be associated (married to) other level types within the system database. Special source/destination associations need to be set up so that the broadcast level types can be controlled independently from other level types ·...
  • Page 8 When the RS422 router card is selected to Non-Distributive operation in the Freeway database, only point to point routes are permitted between any single machine and any one controller. The RS422 router card software will configure any port selected as a Destination to be a controller and any Source as a machine.
  • Page 9 The module can be removed from the frame or replaced, powered or un-powered, using the following procedure. When removing the bottom card it is necessary to remove the door before continuing. For removal purposes it is advisable to remove the ribbon cables first and then the cards. ·...

  • Page 10: Expanding From 32 Ports To 128 Ports

    The following diagrams show the cable connections required for expanding the router from a single card 32 port router up to a four card 128 port router:...
  • Page 12 The card edge controls and indicators on the router card are limited to the Level and Higher Destination Decode switches and a 3 LED array, both of which are described in part one of the Freeway Series User guide. For separate routers to be controlled independently, each must have a different level address set.
  • Page 13 View from front of card: switch up for Off switch down for On Higher Dest Decode Level Control card Hello Green LEDs...

  • Page 14: Led Indications

    The switch marked ‘HIGHER DEST DECODE’ tells each card what range of ports it’s assigned to. This switch must be set correctly for each card according to the configuration of the system and how the rear connectors are used. The range is assigned as follows: SW 1 SW 2...

  • Page 15: The Freeway Control Card

    Section 6 of the Freeway Technical Manual. The Freeway RS422 card may or may not therefore host a control card. If it does, then a card reset may be performed as described in the following section.
  • Page 16 The rear panel has four 50 way ‘D’ type fixed sockets, providing connections for 32 ports, each with an A and B circuit pair. A and B configure themselves to be receive (RX) or transmit (TX) circuits according to user selection (see Section 2.2). The pinout details for ports 1 to 32 are as follows: Ports 9-16 Ports 1-8...
  • Page 17 Ports 25-32 Ports 17-24 Function Function Function Function Chassis Chassis Chassis Chassis A25 Gnd A29 Gnd A17 Gnd A21 Gnd A25 + A29 + A17 + A21 + A25- A29- A17- A21- B25 Gnd B29 Gnd B17 Gnd B21 Gnd B25+ B29+ B17+...
  • Page 18 RS422 connections are usually wired using 9 pin ‘D’ type connectors. A breakout cable using one 50 way male D type connector and eight 9 way female D type connectors is available, part number 1748, to provide direct interfacing between the Freeway rear panel and other equipment.
  • Page 19 There is no power on the card. · check that there is power from the PSUs · check cable interconnections · ensure that the card is properly seated in the frame No command has been received by the board. · check the power ·...
  • Page 21 The following specification refers to a single, 32 port, router module. Number and type: 32: balanced 4 wire (bi-directional) to EIA standard RS422A Input Impedance: Input sensitivity: 150mV ±12V max Input Common Mode Rejection: Max Output current: 40mA Connectors: Four 50 way D type sockets Maximum current: 1.4A Range:...