GE D.20 RIO Hardware User Manual

Contents

30 GE Information D.20 RIO - HARDWARE USER’S MANUALD.20 LINK CHAPTER 3: CONNECTING TO DEVICES AND NETWORKS• On D.20 cables (GE part number 977-0089), the shielded cable end can be locatedopposite to the cable end labeled with the GE part number.• D-type connector covers must provide EMC shielding (e.g. metallized plastic or die castmetal covers).• Maximum D.20 cable length 1000 ft (300 m)D.20 LinkCommunications between the D.20 RIO and the D20 peripheral I/O modules are carriedover a high-speed, high-level data link control (HDLC) protocol called the D.20 Link. TheD.20 Link has the following features:• RS-485 serial link, half duplex, 250 kbps• D.20 frame using HDLC protocol format with Manchester encoding• Supports up to 30 D20 I/O peripheral modules in a standard configuration• Repeater/extension modules (GE part number 520-0118, 520-0117, and 520-0148)can be used to extend the distance between peripheral modulesD.20 RIO supports all peripherals equipped with PCommon 3.X series. Replacement of thePCommon chips is required for interfacing with existing peripherals equipped with 2.Xseries of PCommon.Table 6: D.20 link port pin outConnection scenariosThere are four ways to connect the D.20 RIO to peripheral devices:• “Single D.20 RIO terminated” on page 31• “Single D.20 RIO looped” on page 31• “Redundant D.20 RIO looped” on page 32• “Redundant D.20 RIO redundant link” on page 32Refer to the section: “Configuring Single and Redundant D.20 RIOs” on page 54 forinformation on configuring D.20 RIOs for the single and redundant connection scenarios.D.20 Port A D.20 Port BName Pin Name PinNo connection 1 Shield 1 1Link channel 1+ 2 Link channel 2+ (SW3 ON) 2 2Link channel 1− 3 Link channel 2− (SW3 ON) 2 3+DC 1 (JP1 1-2) 3 4 +DC 1 (JP1 1-2) 3 4DC 1 Return (JP1 3-4) 3 5 DC 1 Return (JP1 3-4) 3 5Link channel 2+ 6 Link channel 1+ (SW1 ON) 4 6Link channel 2− 7 Link channel 1− (SW1 ON) 4 7+DC 2 (JP1 5-6) 3 8 +DC 2 (JP1 5-6) 3 8DC 2 Return (JP1 7-8) 9 DC 2 Return (JP1 7-8) 9Note 1: Shield is connected to D.20 RIO chassis groundNote 2: Refer to “SW3: D.20 channel 2 to D.20 link port B” on page 22.Note 3: Refer to “JP1: Power supply to D.20 connectors” on page 23.Note 4: Refer to “SW1: D.20 channel 1 to D.20 link port B” on page 22.