USR IOT USR-M100 - Data Points Configuration

User Manual
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87
Table 23 Data types
Type
Function code
Objects count
Note
Bool
1-2
1+
Bool
int8
3-4
1+
Integer 8 bit
uint8
3-4
1+
Unsigned integer 8 bit
int16
3-4
1
Integer 16 bit. Big-endian.high byte first
uint16
3-4
1
Unsigned integer 16 bit. Big-endian.
int32(ABCD)
3-4
2
Integer 32 bit. Big-endian.
int32(CDAB)
3-4
2
Integer 32 bit. Little-Endian byte swap
uint32(ABCD)
3-4
2
Unsigned integer 32 bit. Big-endian.
uint32(CDAB)
3-4
2
Unsigned integer 32 bit. Little-Endian byte swap.
float32(ABCD)
3-4
2
Float 32 bit. Big-endian.
float32(CDAB)
3-4
2
Float 32 bit. Little-Endian byte swap.
float64
3-4
4
Float 64 bit.
Note that these could be referred to in different ways. for example a 4 Byte Signed Integer might be referred to as a 32 bit Integer in
equipment documentation. For binary values we also need to know what “bit” of the register to look at for the binary value. For this
reason a single 16 bit modbus register could represent up to 16 individual binary data points. Sometimes the Data Type is inferred by
listing the number of registers. For example 2 registers might mean a 4 byte value.
9.2.3. Data points configuration
First select the slave device, click add nodes to add a data point, click edit to configure the data point, click delete to delete a data
point.
Fig. 129 Add modbus data point