Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual page 683

Hint
• The setting in bit 1 of C+5 is supported only by CJ2, CJ1, CS1-H, CJ1-H CPU Units and CS1 CPU
Units with lot numbers of 001201@@@@ or later (manufactured December 1, 2000 or later).
• The number of valid input data bits for the measured value is designated by the input range setting in
C+6, bits 08 to 11, and the number of valid output data bits for the manipulated variable output is
designated by the output range setting in C+6, bits 0 to 3. These ranges are shown in the following
table.
C+6, bits 08 to 11 or
C+6, bits 00 to 03
0
1
2
3
4
5
6
7
8
If the range of data handled by an Analog Input Unit or Analog Output Unit cannot be set accurately
by setting the number of valid bits, APR(069) (ARITHMETIC PROCESS) can be used to convert to
the proper ranges before and after PID(190).
The following program section shows an example for a DRT1-AD04 Analog Input Unit and DRT1-
DA02 Analog Output Unit operating as DeviceNet slaves. The data ranges for these two Units is 0000
to 1770 hex, which cannot be specified merely by setting the valid number of digits. APR(069) is thus
used to convert the 0000 to 1770 hex range of the Analog Input Unit to 0000 to FFFF hex for input to
PID(190) and then the manipulated variable output from PID(190) is converted back to the range
0000 to 1770 hex, again using APR(069), for output from the Analog Output Unit.
From Analog Input Unit
Execution
condition
To Analog Output Unit
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Number of valid bits
8
9
10
11
12
13
14
15
16
Control Data
APR
C (D1000):
D1000
C+1 (D1001):
C+2 (D1002):
Analog input value
C+3 (D1003):
C+4 (D1004):
D2000
PID
Control Data
D2000
C+6 (D2506):
@8@8
D2500
Valid number of bits: 16 (0000 to FFFF Hex)
D3000
Valid number of bits: 16 (0000 to FFFF Hex)
Control Data
APR
C (D1500):
D1500
C+1 (D1501):
C+2 (D1502):
D3000
C+3 (D1503):
Analog output value
C+4 (D1504):
0000 Hex (binary with one table)
1770 Hex (Xm)
0000 Hex (Yo)
1770 Hex (X1)
FFFF Hex (Y1)
0000 Hex (binary with one table)
FFFF Hex (Xm)
0000 Hex (Yo)
FFFF Hex (X1)
1770 Hex (Y1)
3. Instructions
Range
0000 to 00FF hex
0000 to 01FF hex
0000 to 03FF hex
0000 to 07FF hex
0000 to 0FFF hex
0000 to 1FFF hex
0000 to 3FFF hex
0000 to 7FFF hex
0000 to FFFF hex
Y (hex)
Y1: #FFFF
Y0: #0000
X
#0000 X1: #1770
(hex)
(Xm)
Y (hex)
Y1: #1770
Y0: #0000
#0000 X1: #FFFF
(Xm)
3
X
(hex)
647