Omron SYSMAC CS1W-LCB01 Operation Manual page 54

Outline
Example 1
Example 2
Example 3
Example 1
Example 2
Note
20
Field Terminal
block
Operation block
Analog
input
Field Terminal
block
Analog
input
• The Loop Controller handles analog I/O signals not in engineering units
but in percentage units.
At analog input, the converted values 0000 to 0FA0 (FF38 to 1068) Hex from
the Analog Input Unit for input 4 to 20 mA (3.2 to 20.8 mA) are converted to
0.00 to 100.00% (−5.00 to 105.00%) before they are processed by the Loop
Controller.
At analog input, the converted values F830 to 07D0 (F768 to 0898) Hex from
the Analog Input Unit for input −10 to +10 mV (−11 to +11 V) are converted to
0.00 to 100.00% (−5.00 to 105.00%) before they are processed by the Loop
Controller.
At analog output, the values 0.00 to 100.00% (−5.00 to 105.00%) are con-
verted to setting values 0000 to 0FA0 (FF38 to 1068) Hex before 4 to 20 mA
(3.2 to 20.8 mA) is output from the Analog Output Unit.
Note Converted values (in the case of analog input) for 0 to 100% on the
Loop Controller and setting values (in the case of analog output) for
0 to 100% on the Loop Controller are fixed to the same values as
the user ranges. However, in the case of Isolated-type Analog Input
Units (CS1W-PTS01/02/03, PTW01, PDC01, PPS01, PTR01), the
Analog Input Unit itself has a range setting function. So, any values
can be specified as the converted values (on condition that the
same setting as the range setting is made).
• Likewise, data exchange with the CPU Unit is handled not in engineering
units but in percentage units. Values in I/O memory words are converted
to percentage units based upon the specified range before they are input
to the Loop Controller. Alternatively, percentage values are converted to
Hex values based upon the specified range before they are output to CPU
Unit I/O memory.
At input from the CPU Unit, the values of 0000 to 0FA0 Hex in the I/O memory
words are converted to 0.00 to 100.00% before they are input to the Loop
Controller when the range 0 to 4000 (0000 to 0FA0 Hex) is specified.
At output to the CPU Unit, the values of 0.00 to 100.00% are converted to
0000 to 0FA0 Hex before they are output to the Control Unit when the range 0
to 4000 (0000 to 0FA0 Hex) is specified.
1. In data exchange with the CPU Unit, data can be actually exchanged within
the range −320.00 to +320.00% and not within the range 0.00 to 100.00%.
So, in the above example, the conversion range for 0 to 4000 (0000 to
0FA0 Hex) is 0.00 to +100.00. However, in actual operation, 8300 to FFFF
Software wiring
Control block
PID
Addition/
Subtraction
Section 1-1
Field Terminal block
Analog
output
Parameters
ITEM Data
000
001
002
:
: