Operating instructions
PTQ-MCM ♦ Quantum / Unity Platform  Diagnostics and Troubleshooting 
Modbus Communication Module 
Page 82 of 139  ProSoft Technology, Inc. 
April 29, 2008 
The remainder of this section shows you the menus available for this module, 
and briefly discusses the commands available to you. 
Keystrokes 
The keyboard commands on these menus are almost always non-case sensitive. 
You can enter most commands in lower case or capital letters. 
The menus use a few special characters ([?], [-], [+], [@]) that must be entered 
exactly as shown. Some of these characters will require you to use the [Shift], 
[Ctrl] or [Alt] keys to enter them correctly. For example, on US English 
keyboards, enter the [?] command as [Shift][/]. 
Also, take care to distinguish capital letter [I] from lower case letter [l] (L) and 
number [1]; likewise for capital letter [O] and number [0]. Although these 
characters look nearly the same on the screen, they perform different actions on 
the module. 
7.1.3 Main Menu 
When you first connect to the module from your computer, your terminal screen 
will be blank. To activate the main menu, press the [?] key on your computer's 
keyboard. If the module is connected properly, the following menu will appear on 
your terminal screen: 
Caution: Some of the commands available to you from this menu are designed for advanced 
debugging and system testing only, and can cause the module to stop communicating with the 
processor or with other devices, resulting in potential data loss or other failures. Only use these 
commands if you are specifically directed to do so by ProSoft Technology Technical Support staff. 
Some of these command keys are not listed on the menu, but are active nevertheless. Please be 
careful when pressing keys so that you do not accidentally execute an unwanted command. 
Viewing Version Information 
Press [V] to view Version information for the module. 
Use this command to view the current version of the software for the module, as 
well as other important values. You may be asked to provide this information 
when calling for technical support on the product. 










