Bosch Access Easy Controller 2.1 User Manual

28 en | 4-Reader Board Access Easy Controller 2.1
2018.11 | 1.0.6 | F.01U.122.796 Hardware Installation Manual Robert Bosch (SEA) Pte Ltd
6.1.5 15 VDC Input Termination
Reference: Terminal Strip T1
Terminal strip T1 is used to provide up to 15 VDC power to the interface boards (e.g. 4-Reader
board and 8-IO board). It consists of four terminals. Two terminals provide the input power for
the board (DC 15V IN), and the next two terminals provide the input power for the next board
(DC 15V OUT), within the same casing. The diagram below shows the configuration of the
terminal strip T1. It receives 13 VDC from the PSU.
T1
+
-
+
-
DC 15V
IN
DC 15V
OUT
Figure6.3: 15 VDC Input Terminal
6.1.6 RS232
Reference: Terminal Strip T14
Terminal strip T14 is used as a communication channel between the interface board (e.g. 4-
Reader board and 8-IO board) and the CPU. The channel consists of four data cables, namely
RTS, TX, RX, and Gnd. The cables are connected to the serial COM port on the CPU. The
diagram below shows the configuration of the terminal strip T14.
T14
RS232
TX
RX
RTS
GND
Figure6.4: RS232
6.1.7 RS485
Reference: Terminal Strip T13
Terminal strip T13 is used as a communication channel between the interface boards (e.g. 4-
Reader board and 8-IO board). RS485 is a multi-drop communication channel. It enables the
CPU to disseminate and receive data to and from all the interface boards. It consists of four
24-AWG-CAT5 cables, namely EARTH, B, A and SHIELD. All the interface boards within the
system are connected using the RS485 terminal. The diagram below shows the connections on
the terminal strip T13.
T13
RS485
B
A
EARTH
SHIELD
Figure6.5: RS485

Bosch Access Easy Controller 2.1 Specifications

General

Brand	Bosch
Model	Access Easy Controller 2.1
Category	Controller
Language	English