turck BL20 Series - 8.9.4 Process data mapping

Analog Input Modules
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8.9.4 Process data mapping
n = offset of input data; depending on extension of station and the corresponding fieldbus.
Representation of HART-variables without unit according to ANSI/IEEE 754-1985 ”Standard for
Binary Floating-Point Arithmetic for microprocessor systems”.
Data Byte Byte
DP/PN
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Input n n + 1 AI1 LSB
n + 1 n AI1 MSB
n + 2 n + 3 AI2 LSB
n + 3 n + 2 AI2 MSB
n + 4 n + 7
Parameterizable HART-variable A
without unit
n + 5 n + 6
n + 6 n + 5
n + 7 n + 4
n + 8 n + 11
Parameterizable HART-variable B
without unit
n + 9 n + 10
n + 10 n + 9
n + 11 n + 8
n + 12 n + 15
Parameterizable HART-variable C
without unit
n + 13 n + 14
n + 14 n + 13
n + 15 n + 12
n + 16 n + 19
Parameterizable HART-variable D
without unit
n + 17 n + 18
n + 18 n + 17
n + 19 n + 16
NOTE
With PROFIBUS, PROFINET and CANopen, the I/O data of this module is localized within
the process data of the whole station via the hardware configuration tool of the fieldbus
master.
For DeviceNet, EtherNet/IP and Modbus TCP a detailed mapping table can be created with
the TURCK BL20 DTM in PACTware.
Process data Meaning
AI1 LSB low byte of the analog value
AIx MSB high byte of the analog value