4. Configuration
97
Figure 4-13. MODBUS Data Mappings Screen
Configuration
Description
Default
Options
Value Variable
Symbolic variable name
-
Name of a variable declared in a program
or GVL
Data Type
MODBUS data type
-
Write Coil (1 bit)
Read Coil (1 bit)
Write Holding Register (16 bits)
Read Holding Register (16 bits)
Holding Register
– AND Mask (16 bits)
Holding Register
– OR Mask (16 bits)
Input Register (16 bits)
Input Status (1 bit)
Data Start
Address
Initial address of the MODBUS data
-
1 to 65536
Data Size
Size of the MODBUS data
-
1 to 65536
Data Range
The address range of configured data
-
-
Quality variable
Variable name that will contain the
quality data of the MODBUS mapping
-
Variable name declared in a program or
GVL. The variable must be DWORD type.
Generate
Quality
Variables
Automatically generates in the
IOQualities GVL variables of type
QUALITY for each value variable
declared. For more information go to
chapter Quality Conversions.
-
-
Table 4-49. MODBUS Mappings Settings
Notes:
Data Type:
This field is used to specify a data type used in the MODBUS relation.