ALTUS Nexto Series

5. CONFIGURATION
Figure 63: MODBUS Function
In table below, the number of factory default settings and the values for the column Options, may vary according to the
data type and MODBUS function (FC).
Configuration Description Default Value Options
Function MODBUS function type Read
Read
Write
Read/Write
Mask Write
Polling (ms) Communication period (ms) 100 0 to 3600000
Mapping Diagnostics Area
Initial address of the MOD-
BUS relation diagnostics
(%Q)
- 0 to 2147483640
Read Data Start Address
Initial address of the MOD-
BUS read data
1 1 to 65536
Read Data Size
Number of MODBUS read
data
-
Depends on the function
used
Read IEC Variable
Initial address of the read
variables (%I)
- 0 to 2147483646
Write Data Start Address
Initial address of the MOD-
BUS write data
1 1 to 65536
Write Data Size
Number of MODBUS write
data
-
Depends on the function
used
Write IEC Variable
Initial address of the write
variables (%Q)
- 0 to 2147483647
Mask Write IEC Variables
Initial address of the vari-
ables for the write mask
(%Q)
- 0 to 2147483644
Table 95: Device Mapping
Notes:
Function: the available data types are detailed in the Table 114 and MODBUS functions (FC) are available in the Table
112.
117