Reference Manual Rev 1.13 
Page 138  004R-646-113 
23.  Appendix 6: M4221 Ethernet Module 
23.1.  Overview 
The  M4221  Ethernet  module  provides  IP  (internet  protocol)  connectivity  to  the 
indicator. The information in this appendix only applies to indicators fitted with this 
module.  
23.2.  Network Configuration 
After  installing  the  module,  and  connecting  it  to  the  network  it  is  necessary  to 
configure the network settings for the module. These settings may be automatically 
configured from your network via DHCP (Dynamic Host Configuration Protocol), or 
may  need  to  be  set  manually.  Contact  your  network  administrator for settings 
appropriate to your network. The DHCP setting, IP address, network mask, default 
gateway and DNS servers are configured from the indicator via the ETH.HW menu 
(Section  12.2.3  on  page  61).  Additionally  a  host  name &  DHCP  client  ID  may be 
optionally configured from the Module web page. 
23.3.  Viewing the Current Configuration 
The Acc menu provides access to the current IP configuration of the module. Refer 
to Section 5.15 on page 35. 
23.4.  Services 
The M4221 provides a number of services via the network, including a configuration 
web page and two TCP ports providing access to the indicators’ serial ports SER.3A 
and SER.3B.  
23.4.1.  TCP Sockets 
SER.3A can be accessed via TCP port 2222 on the module. This port allows only 
one simultaneous connection as it is bi-directional 
SER.3B can be accessed via TCP port 2223 on the module. This port allows up to 
10 simultaneous connections, as it is transmit only (data is sent from the indicator to 
the PC). 
As  with  other  serial  modules,  it  is  necessary  to  configure  a  function  (networking, 
printing or auto-outputs) on the indicator to communicate via SER.3A or SER.3B. 
The  Viewer  software  can  be  used  to  test  the  connection  to  the  indicator.  This 
requires  Viewer  version  1.44+.  Select  a  TCP  connection  from  the  connection 
settings  dialog,  and  enter  the  indicator  IP  address  or  hostname.  The  TCP  port 
should be set to 2222. 
23.4.2.  Web Interface 
There is a Web page provided by the module. This can be accessed by determining 
the IP  address  from  the Acc  menu, and then entering  the  following into your  web 
browser:  http://<module_ip_address>/.  The  default  username  for  the  module  web 
page is “admin”, and the default password is “PASS”.