Bosch DS7200V2-EXP - Door Access Control Module (DACM); Figure 58: DX4020 Ethernet;Serial Status Leds; Table 17: Ethernet;Serial Status LED Functions; Table 18: DACM Wire Lengths

DS7200V2-EXP | Installation Guide | 2. System Installation
and Setup
EN | 38
Bosch Security Systems, Inc. | 04/12 | F01U253045-02
2.9.6 DX4020 Ethernet/Serial Status LEDs
The DX4020 has four Ethernet/serial status LEDs.
Figure 58: DX4020 Ethernet/Serial Status
LEDs
1- DX4020 Ethernet/Serial Status LEDs
2- LED Enable Pins (P2)
3- Disabled position
4- Enabled position
Table 17: Ethernet/Serial Status LED
Functions
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.
2.9.7 DX4020 Supervision
The control panel supervises 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.
2.10 Door Access Control Module
(DACM)
2.10.1 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 105
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.
2.10.2 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.
Table 18: DACM Wire Lengths
Power
Source
0.8 mm
(#22 AWG)
1.2 mm
(#18
AWG)
DACM to
Control
Panel
Control Panel 305 m
(1007.7 ft)
610 m
(2001 ft)
External
Power Supply
See Figure 59, on page 39, and Figure 60, on page
39, for acceptable power wiring connections.
1
3
4
2