Softing dataFEED Series User Manual page 38

dataFEED Gateway - User Manual
<StartAddress>
The start address defines the point at which reading and writing starts.
Example:
ER120: Input Register 120
If the start address is a specific bit, the bit number is also required.
<.BitNumber>
The bit number must be provided whenever the data type is BOOL.
Example:
HRX5.2: bit 2 of Holding Register 5
[.ArraySize]
Arrays merge several units of one data type.
Example:
HRD50.3
[Strings]
For a Modbus controller to support strings we interpret consecutive Modbus registers as a character string with 8
bit US-ASCII coding.
Example:
RS100.8 allows an interpretation of Modbus registers 100 to 108 as a string of 8 character of 8 bits each.
[Suffix]
By using a suffix a value can be presented in another format.
Suffix
Syntax
BitArray BA
BCD BCD
34
Use
No. of bits:
Byte Size in bytes times 8
Word Size in words times 16
Int Size in Int times 16
DWord Size in DWord times 32
Dint Size in Dint times 32
Byte Byte:
Word Word:
Int Int:
DWord DWord:
Dint Dint:
Area Data type
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
BOOLEAN
0 to 99 SHORT
0 to 9999 SHORT
0 to 9999
0 to 9999999
0 to 9999999
Comments
With the BA suffix,
the data saved in the PLC
is shown as an array of
bits.
With the BCD suffix,
the data saved in the PLC
is shown as non-signed,
binary-coded values.
For example, the decimal
value 65535
is shown as 9999.
© Softing Industrial Automation GmbH