GE P485 instruction manual Main window

FRAME AND COMMAND EDITORS

It is not possible to alter the contents of columns 1, 2 and 4, as these are pre-defined commands. However, on column 3 there are two possible actions: Insert Column and Delete Column. These actions are available in the Columns menu.

Column 3 in the Command Editor is where objects can be added for custom commands. Supported objects are Byte, Word, DWord, Data and Error Check. In this Modbus example it makes no sense to add an Error Check object since it is already incorporated in the standard frame but all other objects could be added in any way.

The “response” field (E) is defined much in the same way as the “query”, with the difference that a “response” can depend on what is entered in the “query”

Query		Column
	1: Slave Address.	2: Modbus Function Code	3: See below	4: Error Check field.
DisplayName	Slave Address	Function	Data	Checksum
	See Query	See Query	See Query	See Query
Object Type	Byte	Byte	Data	Checksum
	See Query	See Query	See Query	See Query
Value	[SlaveAddress]	ID	User	Depend
	See Query	See Query	See Query	Object has same setting
				as the corresponding
				Query object . It also will
				appear as non-editable in
				the parameter window
				(see below)

If ‘Depend’ is selected then this object in the “response” will get the same setting as the corresponding object in the “query”, furthermore the object will appear as non-editable in the parameter window (see below).

Figure 6-5: Main window

6–4 P485 MODBUS TO PROFIBUS CONVERTER – USER GUIDE