DS7200V2-UK Installer's Guide
Copyright
2007 Bosch Security Systems, Inc.
P/N: 4998152533-02 Page 31
PART II: SYSTEM INSTALLATION AND SETUP
21.6
DX4020 Ethernet/Serial Status LEDs
The DX4020 has four Ethernet/serial status LEDs.
LED Enable Pins (P2)
Ethernet/Serial
Status LEDs
Disabled
Enabled
Figure 53: DX4020 Ethernet/Serial Status LEDs
LED
Color
Function
BUS-XMIT
Red
Flashes when the data bus
sends a message.
BUS-RCV
Red
Flashes when the data bus
receives a message.
SER-RX
Green
Flashes every time a message
is received from the Ethernet
port.
SER-TX
Green
Flashes every time a message
is sent to the Ethernet port.
Table 16: DX4020 Ethernet/Serial Status LED Functions
21.7 DX4020
Supervision
The control panel supervises proper communication
to the DX4020 when it is used for network
communication. If it fails to communicate with the
DX4020, the control panel sends a “Dbus Missing”
{125} report, or a “Dbus Missing Alarm” {187} report.
22.0 Door Access Control Module (DACM)
22.1 DACM
Overview
The control panel supports up to 8 DACMs.
However, each DACM added to the system
replaces one keypad. If 8 DACMs are added,
you cannot add a keypad. For full system
control, make sure at least one text keypad is
included in the system.
See DACM Configuration on page 116 for
programming instructions.
The DACM grants or restricts access to a door using
a keypad/credential reader, a Request to Exit (REX)
input, and/or a door contact. Each DACM supervises
one door.
The DACM’s door contact input reports the door’s
status to the control panel depending on the DACM’s
programming. When the door is closed, the door
contact reports as normal. When the door is opened,
the door contact reports as faulted or shorted.
For complete installation, programming,
addressing, and operation instructions, see
the documentation supplied with the DACM.
22.2 DACM
Wiring
Distance from the control panel is determined by the
total combined wire length of all devices (including
keypads) connected to the control panel’s data bus
terminals.
Power
Source
0.8 mm
(#22 AWG)
1.2 mm
(#18 AWG)
Control
Panel
DACM to
Control
Panel
External
Power
Supply
305 m
(1007.7 ft.)
610 m
(2001 ft.)
Table 17: DACM Wire Lengths
See Figure 54 and Figure 55 for acceptable power
wiring connections.