Using two OSDP readers with Mercury EP1501, LP1501 or MR51e controllers - Synergis Cloud Link 2.0.4

Synergis™ Cloud Link Administrator Guide 2.0.4

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To use two OSDP readers on the same Mercury EP1501, LP1501, or MR51e controller, you must configure both readers to the first reader port of the controller.

What you should know

Mercury EP1501, LP1501, and MR51e controllers support up to two OSDP readers on port 1, which is terminal block TB2 for the EP1501 or LP1501, and TB3 for the MR51e. If you configure two OSDP readers on the first port, you cannot use the second port.

Mercury EP1501 and LP1501 must be enrolled without extension boards so the first reader port is available for the two OSDP readers.


  1. From the Config Tool home page, open the Access control task, and click the Roles and units view.
  2. From the entity tree, select the Synergis unit, and click the Peripherals tab.
  3. Double-click Reader 1, and configure the following settings:
    Type of reader
    Select OSDP 2.
    Baud rate
    Select a bit rate.
    Select the address you configured for the first reader.
  4. Repeat step 3 for Reader 2, using the address configured for the second reader.
    Selecting OSDP 2 for both readers automatically assigns both readers to the first port.
  5. (Optional, supported readers only) Ensure that the Secured option is set to ON.