18 en | The CPU Board Access Easy Controller 2.1
2018.11 | 1.0.6 | F.01U.122.796 Hardware Installation Manual Robert Bosch (SEA) Pte Ltd
5 The CPU Board
This chapter provides a brief overview of the AEC2.1 CPU board. This chapter also describes
the board layout and functions of various circuits. Some major components of the board are
explained and information concerning jumper option is provided.
The AEC2.1 CPU board is X86 processor based Single Board Computer (SBC) with one or two
100Base-T Ethernet. The serial port (RS232), communicates with the 4-Reader and/or 8-IO
boards.
The CPU board is designed to function as an embedded Web server and an AEC2.1 system.
Two communication ports are available on the CPU board. The first is an 100Base-T Ethernet
port used by the Web server to communicate with the customer's database management
computers. The Ethernet port terminates in an RJ-45 jack located on the CPU board. Standard
category 5 cable is used to connect from the RJ-45 jack to a hub or wall outlet on the
customer's network. Alternatively, a cross-over cable can be used to connect from the
Ethernet jack on the CPU board directly to the Ethernet connector on the customer's
computer.
The second communication port is a RS-232 port. This port is used to connect to an external
modem to allow dial-in connection to the controller.
Figure5.1: CPU Board
Specification for CPU
Input Voltage +5 VDC (4.75 VDC to 5.25 VDC)
Current Consumption 1.95 A @ 5 VDC
CPU speed 500 MHz
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