ICP DAS USA WISE-2841M Series User Manual page 267

ICP DAS WISE User Manual
(7) I/O Data Table for "Active I/O sending" function
WISE equips the "Active I/O sending" function. This "I/O Data Table" area is used
to store the I/O channel data and Internal Register data which user defines in the
"Active I/O Sending" of "Advanced Setting" of WISE. "Active I/O sending"
function allows to rearrange the I/O channels data from different I/O modules and
puts them into a continuous Modbus address memory block, and then SCADA
software can retrieve all I/O channels data from different modules by using one
single Modbus command. Comparing to traditional polling mechanism, it will
greatly save time and polling attempts.
Based on different setting, the data which is stored in this area is also different.
Please refer to the following example.
In this example, we store following I/O channel data in the I/O Data Table.
 I/O channel value of XV Board
 I/O channel value of the module which is connected to COM3 of WISE. Its
module index number is 1.
 I/O channel value of the module which is connected to COM3 of WISE. Its
module index number is 6.
 The Internal Register with index number 1. Its data type is 16-bit Signed
Integer
In the I/O Data Table, the "Local Address" in the left side is the address for saving
I/O Data Table in the WISE Modbus Address Table.
Parameter Name
Coils Output, Unit : Coil(8 Bits)
X
(XV-Board)
DI0
C3N1
(COM3 Module1)
DI0
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Modbus
Length
Address
030000 1
030001 1
Data
Range
Type
Byte 0=OFF, 1=ON
Byte 0=OFF, 1=ON
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