MJ-5 Communications Module 
    11 
Displays current IP address 
192.168.1.200 or xxx.xxx.xxx.xxx 
Displays current Network Mask 
255.255.255.0 or 
xxx.xxx.xxx.xxx 
192.168.1.1 or xxx.xxx.xxx.xxx 
DNP Communication Port Number 
20,000 or NN,NNN (not advisable to 
change) 
Displays the DNP  Software version in use 
IP Address for future network based firmware upgrades 
ALTERNATE USE: IP address for slave 1 in Master Slave Configuration 
IP Address for future network based firmware upgrades 
ALTERNATE USE: IP address for slave 2 in Master Slave Configuration 
Enables/Disables Heartbeat feature  
Controls time of Heartbeat 
 
5.5.1  Communications Menu Item Descriptions 
Data Stat, DatPortBaud, Data Parity, and DataPortAddr 
These menu items apply only to the Data Port located on the front of the MJ-5 Control Panel, and do not require 
modification. 
Reg Id (Regulator Identification) 
This item allows you to uniquely identify each regulator in the system. The Regulator Id is accessible as a data item 
via the communications module for most of the protocol selections. 
Protocol 
This item defines the protocol selection for the MJ-5 Communications Module. The selections are listed in Table 
7-4.  
2200NOA is a variation of the 2200 protocol with the address field suppressed. It is provided for testing the MJ-5 
Communications Module with the MJXplorer software. The SPECIAL item allows a new protocol handler to be 
included in the Communications Module code without forcing a modification to the Main Processor code (for the 
protocol selection front panel screen). 
Comm Baud 
This menu item defines the data rate for the MJ-5 Communications Module. The standard asynchronous 
communications data rates are available for selection. For proper communications, the Comm Baud setting must 
match the baud setting of the other communicating device(s) in the network. 
Comm Parity 
This configuration item defines the parity selection for the communications module. For proper communications, the 
Comm Parity setting must match the parity setting of the other communicating device(s) in the system. 
This parity selection will override any default or inherent parity defined in the selected protocol. [For example, the 
2200 protocol specification document defines the parity as even. The Comm Parity configuration item allows even 
parity to be selected, but it also permits the system designer/installer to use an alternate parity selection if desired.] 
Comm Address