HID Mercury LP1501 - Page 12

Reader port 1 - remote serial I/O devices using MSP1 protocol (2-wire RS485)
Refer to the appropriate remote serial I/O device installation manual for address and baud rate settings. Do
not terminate any of the devices on the RS-485 multi-drop communication bus. Each remote serial I/O device
must be configured with a unique communication address. A maximum of eight remote serial I/O devices can
be connected to reader port 1. Cable shield: only ground one end.
Reader port 1 - OSDP protocol devices (2-wire RS-485)
Refer to the appropriate OSDP device installation manual for address and baud rate settings. Do not
terminate any of the devices on the RS-485 multi-drop communication bus. Each OSDP device must be
configured with a unique communication address. A maximum of two OSDP devices can be connected to
reader port 1. Cable shield: only ground one end.
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PLT-05243, A.1 12 June 2021
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HIDMercury™ LP1501 Controller
Installation and Specifications