Specifications
DSX-LAN (M) 
LAN Communications Interface
DSX Access Systems, Inc. 10731 Rockwall Road Dallas, Texas 75238 / 888-419-8353 / 214-553-6140 / www.dsxinc.com
11/2012
  Powered from DSX Controller 
  Auto-sensing 10/100 / Auto-Duplexing 
  RS-232/RS485 Controller Communication 
  UL 294 / UL 1076 
  Dial-Up Modem Backup – Optional 
  Static or Dynamic IP Communications 
 
Password Protected Programming
General Application 
The DSX-LAN(M) module is typically used to connect a 
Master Controller to the Host or Comm Server PC over a 
Local or Wide Area Network. The WinDSX software is 
inherently TCP/IP capable and redirects communications that 
would normally be transmitted out a serial port, over a 
LAN/WAN to a particular IP address. The DSX-LAN(M) 
module receives that communication and converts it to RS-232 
or RS-485 that connects directly to the Master Controller. This 
adds another avenue of flexibility to WinDSX by utilizing 
TCP/IP communications as well as dial-up modem and direct 
serial port connectivity. All three means of communication can 
be used at the same time in the same system. The DSX-
LAN(M) is powered from the DSX Controller which can 
provide battery backup. 
The DSX-LAN(M) module is sold in two different 
configurations. The DSX-LAN has IP as the only method of 
connectivity. The DSXLAN(M) has dial up modem backup. 
The DSX-LAN module must be ordered with the (M) option 
along with the DSX modem to support the dial-up backup 
feature. 
Other Applications 
The DSX-LAN can also be used at Slave Controllers with the 
use of the PC Master Software. PC Master is a DSX software 
application that emulates a Master Controller. It gets its 
download from the Comm Server PC and communicates with 
all of the Slaves just like a Master Controller does. What is 
different about the PC Master software is its ability to 
communicate with each Slave Controller via TCP/IP or with a 
serial port connection. This allows Slave Controllers to be 
placed on the LAN and each one or each group of controllers 
to have a LAN connection using a LAN module. Modem 
backup is not available for slave controller communication. 
Dial-up Modem Backup 
The DSX-LAN(M) module has a 9 pin serial port that is used 
to connect a DSX modem for communications redundancy. 
When the LAN(M) module determines a loss of network 
connectivity it switches to “Modem Mode” which allows the 
controller to call the Comm Server or Host PC via the modem 
when necessary. When the Network connection is re-
established the Controller reconnects over the LAN. The 
modem and the LAN(M) module are powered from the 
Controller and are connected to each other via the supplied 
serial cable. 
Power 
The DSX-LAN(M) is powered from one of the Controllers 
12VDC outputs requiring a mere 300ma. Powering the module 
from the DSX Controller provides a good stable battery 
backed up source. 
Mounting 
The DSX-LAN(M) is designed to fit in the same Equipment 
Cabinet as the DSX-1048 and DSX-1022 Controllers. It can 
mount on the inside or rest in the bottom of the enclosure. It 
has three mounting holes and removable terminal blocks. 
Size 
DSX-LAN(M) 5.5" W x 3.5" H x 1.0" D 
Weight 
DSX-LAN 12.0 oz. 
Temperature/Humidity 
Operating 0 to 70 C 
Power Requirements 
DC Input Voltage 12VDC @ 300ma 










