Emerson DL8000 - Page 108

DL8000 Preset Instruction Manual
B-16 Modbus Communications Revised February-2016
Point Indexing
Example
When using Point Indexing the configuration of
Starting
Register
Ending
Register
Device
Parameter(s)
Indexing Conversion
100 103 AIN, 4-1, EU Point 0
specifies four registers (100, 101, 102, and 103) that are mapped to a
group of analog input (AIN) values in engineering units (EU) starting at
the analog input in the fourth module location, first position (4-1):
 Register 100 = EU of AIN point in location 4-1.
 Register 101 = EU of AIN point in location 4-2.
 Register 102 = EU of AIN point in location 4-3.
 Register 103 = EU of AIN point in location 4-4.
Parameter Indexing
Example
When using Parameter Indexing the configuration of
Starting
Register
Ending
Register
Device
Parameter(s)
Indexing Conversion
109 114 FST 1, R1 Parameter 1
specifies six registers (109, 110, 111, 112, 113, and 114) that are
mapped to a group of FST 1 parameters starting at FST Register 1:
 Register 109 = Register 1 of FST Point Number 1.
 Register 110 = Register 2 of FST Point Number 1.
 Register 111 = Register 3 of FST Point Number 1.
 Register 112 = Register 4 of FST Point Number 1.
 Register 113 = Register 5 of FST Point Number 1.
 Register 114 = Register 6 of FST Point Number 1.
Conversion Code 1 (Float to Integer, Float Scale 1) converts the floating
point value to an integer before returning the response message to the
host.
Field
Description
Conversion
Indicates the type of data conversion (if any) required
before the data is either sent to the host or written to
the DL8000. Conversions accommodate differences
in data types between slave and master devices. See
Table B-6.
Note: Conversion codes affect Function Codes 3, 4,
6, 8, and 16.
Comm Port
Indicates the communication port associated with this
entry. Click the field to display all valid options.