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Data-Linc Group PlantLinc PLR5000 User Manual

Industrial frequency hopping spread spectrum radio modem
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U
G
SER
UIDE
PlantLinc
5000
™
PLR5000
Industrial Frequency Hopping
Spread Spectrum Radio Modem
It is essential that all instructions contained in the User Guide are followed precisely to ensure proper operation of equipment.

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Summary of Contents for Data-Linc Group PlantLinc PLR5000

  • Page 1 UIDE PlantLinc 5000 ™ PLR5000 Industrial Frequency Hopping Spread Spectrum Radio Modem It is essential that all instructions contained in the User Guide are followed precisely to ensure proper operation of equipment.
  • Page 2 Consult the dealer or an experienced radio/TV technician for help. Note: Whenever any Data-Linc Group PLR series modem is placed inside an enclosure a label must be placed on the outside of that enclosure which includes the modem’s FCC ID.

  • Page 3: Table Of Contents

    Main Menu Option (5): Edit Multipoint Parameters ............18 Using an External Antenna ......................21 Modem Front Panel LEDs......................22 Sample Data Communication Links...................23 Technical Specifications ......................25 Troubleshooting .........................26 Technical Support ........................28 Return Material Authorization ....................28 Contact Information........................28 Appendix A: PLR5000 Modem Enclosure Diagram ..............29 DATA-LINC Group P/N 161-09888-001...
  • Page 4 PlantLinc PLR5000 User’s Guide DATA-LINC Group P/N 161-09888-001...

  • Page 5: Introduction

    1200 to 38.4 Kbps. Full duplex operation at data rates up to 19.2 Kbps provide the fast response times needed for polling communications. The PLR5000 has a range of up to 4 miles (6.5 km) with line-of- sight and an omni directional antenna.
  • Page 6 LED “C” (carrier detect) should turn on for both the Remote and Master. If it is a point-to- multipoint system the “C” LED will turn on for the Remote only. Attach a Loop Back Test Jumper on the RS232 data DB9F connector of the PLR5000 remote. The jumper shorts pins 2 and 3 of the data connector.

  • Page 7: Plr5000 Modem Configuration

    Control When the setup program is invoked, the “O” LED on the PLR5000 front panel will flash once when the Configure button is pressed and the “C” LED will remain on for the entire time the radio modem is in setup mode.

  • Page 8: Main Menu Option (0): Set Operation Mode

    When item (0) is selected, the Operation Mode Menu appears as shown in Figure 2. The Operation Mode option is used to designate the method in which the particular PLR5000 will be used. The PLR5000 operates in a Master to remote configuration; therefore, any radio modems that are intended to operate together must be set up as such.
  • Page 9 Repeater. (5) Point-to-Point Repeater PLR5000 radio modems allow the use of up to two Repeaters in a communications link, significantly extending the operating range. When designated as a Repeater, a radio modem behaves as a pass-through link. All settings for the call book, baud rates, and radio transmission characteristics are disabled. A Repeater will connect with any Master that calls it (the Repeater must still be set up in the Master’s call...

  • Page 10: Main Menu Option (1): Set Baud Rate

    2. In the “Set Multi Point Parameters” menu, set Master Packet Repeat to (3). Note: When using the PLR5000 radios in ModBus RTU mode the Master Packet Repeat must be set to (3) regardless of whether the modems are being used in point-to-point or multipoint mode. If a setting that is higher than (3) is required, it can be done, but the throughput speed will be decreased.

  • Page 11: Main Menu Option (2): Edit Call Book

    Main Menu Option (2): Edit Call Book The Call Book is an innovative feature in the PLR5000 that offers both security and flexibility in use. The Call Book accomplishes this by allowing the user to determine with which other PLR5000s a given radio modem will communicate, based on the Call Book numbers for both the Master and remote.
  • Page 12 PlantLinc PLR5000 User’s Guide Figure 3: Call Book Menu Shown below are example settings. Please refer to the supplied configuration sheets for your modem’s configuration. Entering or Modifying Numbers in the Call Book Entering or modifying call book numbers in the Call Book is a straightforward process. When in the Call Book menu, select the entry number (0 –...
  • Page 13 PlantLinc PLR5000 User’s Guide Edit Call Book in Multipoint Systems In a multipoint system, the Remotes and Repeaters are not listed in the Master’s Call Book. When establishing such a system, it is necessary only to have the Master’s Call Book number in each Remote’s and Repeater’s Call Book, and to have each Repeater’s Call Book number in the Call Book of each Remote which...

  • Page 14: Main Menu Option (3): Edit Radio Transmission Characteristics

    Selection (0) in the Radio Parameters menu allows the user to modify the hopping patterns of the radio modems to minimize the interference with other PLR5000 radio modems in operation in the area. For instance, if there were 10 pairs of PLR5000s in operation within a factory or refinery, changing the Frequency Key would ensure that they would not jump onto the same frequencies at the same time for the same length of time.
  • Page 15 PlantLinc PLR5000 User’s Guide Table 3: Minimum Packet Size Settings (bytes) Setting Min Packet Size Setting Min Packet Size RF Data Rate =2 RF Data Rate =3 Table 4: Maximum Packet Size Settings where RF Data Rate=3 Maximum Setting DATA-LINC Group...
  • Page 16 (4) RF Data Rate The PLR5000 has two settings for the RF Data Rate (not to be confused with the RS232 Baud Rate). Setting 2 (50.1 Kbps) should be used when the radio modems are close together and data throughput is to be optimized.
  • Page 17 10 different PLR5000s. However, it is important to note that when Remote Security is set to 1, the radio modem will accept calls from any other PLR5000, and additional system security measures should be taken to prevent unauthorized access.

  • Page 18: Main Menu Option (4): Show Radio Statistics

    15 to 30. Average noise levels significantly higher than this are an indication of a high level of interference that may degrade the performance of the link. High noise levels can often be improved with bandpass filters, antenna placement or antenna polarization. Please contact Data-Linc Group for more information. Average Signal Level The average signal level indicates the level of received signal at this modem and at each of the modems used as Repeaters in the link.
  • Page 19 Remote and/or Repeater is linked to the Master Radio Temperature The radio temperature value is the current operating temperature of the radio in degrees C (Celsius.) For proper operation, PLR5000 radio modems must be in the range of –4 to 75 Multipoint Operation In a multipoint system, a radio modem designated as a Master is able to simultaneously be in communication with numerous Remotes.

  • Page 20: Main Menu Option (5): Edit Multipoint Parameters

    Remotes. In point-to-point operation, the PLR5000 radio modems acknowledge every data packet transmitted. In a multipoint network, the Remotes do not acknowledge transmissions from a Master to the Remotes. This is to prevent system overload.
  • Page 21 Remote and a Repeater. When in this mode, a PLR5000 will repeat any packets sent from a Master as well as send them out the RS232 port. This allows a PLR5000 set as a Repeater to act as a Remote at the same time. 0 disables this mode, 1 enables it.
  • Page 22 SubNet ID The PLR5000 series modems offer a SubNet ID system for use in multipoint networks using Network ID. This feature allows the users to dictate what path a given Repeater or remote will use to achieve a link to the network Master.

  • Page 23: Using An External Antenna

    PlantLinc PLR5000 User’s Guide PLR5000 Location Placement of your PLR5000 is likely to have a significant impact on its performance. In general, the rule of thumb with the PLR5000 is that the higher the placement of the antenna, the better the communication. In practice, you should also place the radio modem itself away from computers, telephones, answering machines, and other similar equipment.

  • Page 24: Modem Front Panel Leds

    PlantLinc PLR5000 User’s Guide PLR5000 Front Panel LEDs The LEDs on the PLR5000’s front panel provide important information the of the radio modems. Compare the status of a radio modem’s LEDs with the tables below to aid you in the troubleshooting process...

  • Page 25: Sample Data Communication Links

    Sample Data Communication Links The PLR5000’s versatility allows data communication links to be established using a variety of different configurations. This, in turn, makes it possible to extend the range of the PLR5000 and communicate around obstacles. Diagram 2 shows the most common and straightforward link, a Master communicating to a Remote in a dedicated link.
  • Page 26 PlantLinc PLR5000 User’s Guide Diagram 3 depicts how a link might be set up using a Repeater. The Repeater may be sitting on a hilltop or other elevated structure to link the Master to the Remote. In this setup, it may be desirable to use an external omni directional antenna on the Repeater;...

  • Page 27: Technical Specifications

    PlantLinc PLR5000 User’s Guide Technical Specifications Range* Rated*: 4 miles (6.5 km) RS232 Data Throughput 1200 Baud - 38.4 Kbaud (uncompressed)** RS232 Interface Asynchronous, full-duplex System Gain 129 dB Minimum Receiver Decode Level -106 dBm @ 10 raw BER 902-928 MHz...

  • Page 28: Troubleshooting

    “I am able to link to a Remote unit within line of sight when the PLR5000 I have is outside. However, as soon as I walk inside with it I lose the link, even if I place the radio modem by the window which faces the Remote unit.”...
  • Page 29 PLR5000 in the field. The PLR5000 essentially functions as a null modem cable. If the application will not work with a hard wire connection then it will not work with the PLR5000, and the problem lies within the application or other hardware (such as the computer or PLC serial ports).

  • Page 30: Technical Support

    Return Material Authorization If a part needs to be sent to the factory for repair, contact Data-Linc Group’s corporate office to request a Return Material Authorization (RMA) number. The RMA number identifies the part and the owner and must be included with the part when shipped to the factory.

  • Page 31: Appendix A: Plr5000 Modem Enclosure Diagram

    PlantLinc PLR5000 User’s Guide Appendix A PlantLinc PLR5000 Enclosure Dimensions DATA-LINC Group P/N 161-09888-001...

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