Renesas FLASH Development Toolkit 3.07 Instruction Manual Page 29

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Designing and Planning an M2150 System
Access Control Design Guide
23
Planning the Reader Locations
Specify the type, model and location of each reader, the door it is to control and the cable routing path
between the reader and door controller. Check the locations during a site survey.
Readers need to be located on the unhinged side of the door, and away from desks or other items that
could make access difficult. Specify the position and height of each reader. The normal height for standard
card readers is approximately 5' (1.55m), measured from floor level to the top of the reader. Fingerprint
readers should be mounted at a height of 3'7" to 3'11" (1.1m to 1.2m).
Using RS485 Readers
For sites not requiring UL compliance, supported RS485 readers can be used by fitting a Dual RS485
Reader Interface Module to a 2DC or 2DBC, or a Quad RS485 Reader Interface Module to a 4DBC, 4DCN
or 4DC. The readers connect to the module, rather than directly to the main board. RS485 Reader
Interface Modules are not available for 8DBCs or 8DCs.
If you are using RS485 readers, make sure that the correct number and type of RS485 Reader Interface
Modules are purchased. Only selected RS485 readers are supported; please ask for a list of supported
readers. General-purpose RS485 readers are not supported.
If you are using a mixture of reader types, the most cost-effective solution is to ensure that the RS485
readers connect to the minimum number of controllers.
Note:
Elevator nodes have integrated ports for RS485 readers (all readers must be the same type in an
elevator node).
If, for example, the reader is connected to the "Reader 2" port on the module, the door furniture must
connect to the "Door 2" port on the door controller.
If you fit an RS485 Reader Interface Module but do not use all RS485 reader ports, you can connect
20mA or Wiegand readers to the spare ports on the controller. However, you must ensure that the
RS485 readers use the highest-numbered ports. For example, if you wish to connect only one RS485
reader to a 4DC, you must connect it to reader port four on the module; you can then connect up to
three 20mA or Wiegand readers to reader ports one, two and three on the 4DC.
Using Two Readers at One Door
Two readers, one for entry and the other for exit, can be used at a single door. This may be used in higher-
security establishments or for zonal antipassback (page 20).
To use two readers at one door, an odd-numbered reader port must be used for the entry reader and the
next even-numbered reader port must be used for the exit reader. The odd-numbered door port is then
used for connection to the door furniture. For example, if you connect the entry reader to reader port one,
connect the exit reader to reader port two and the door furniture to door port one.
Connections are not required to the even-numbered door terminals, although it recommended to link the
door monitor terminals on the even-numbered door to prevent a "Door Forced" alarm during a data
download to the database unit.
Note: The Two Readers At one Door option must be selected for the odd-numbered reader in the
Install/Access Control/Reader screen of the SMS software.
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