Dead-Band Control: Band(272) - Omron CVM1D Operation Manual

PID and Related Instructions
0000
00
(271)
LMT 0001 D00100 D00110

5-24-3 DEAD-BAND CONTROL: BAND(272)

Ladder Symbol
(272)
BAND
Variations
↑BAND(272)
Description
CIO 0001 D00101 D00100
41F5 4FFF
D00110
41F5
Operand Data Areas
S: Input word
S C D
C: First limit word
D: Output word
When the execution condition is OFF, BAND(272) is not executed. When the ex-
ecution condition is ON, BAND(272) controls output data according to whether
or not the specified input data (signed 16-bit binary) is within the upper and lower
limits (dead band). The contents of words C and C+1 are as follows:
C
C+1
If the input data (S) is less than the lower limit (C), the difference between the
input data minus the lower limit data will be output to D and the Less Than Flag
(A50007) will turn ON.
If the input data (S) is greater than the upper limit (C+1), the difference between
the input data minus the upper limit data will be output to D and the Greater Than
Flag (A50005) will turn ON.
If the input data (S) is greater than or equal to the lower limit (C) and less than or
equal to the upper limit (C+1), 0000 will be output to D and the Equals Flag
(A50006) will turn ON.
If the output data is less than 8000 or greater than 7FFF, the sign will reverse. For
example, if the lower limit is 0100 and the input data is 8000, the output data will
be as follows:
E325
E325 < 41F5 < 4FFF
CIO, G, A, T, C, #, DM, DR, IR
Lower limit data (dead band lower limit)
Upper limit data (dead band upper limit)
Output
Lower limit (C)
Upper limit (C+1)
8000 – 0100 = 7F00
(–32,768) (256)
10 10
Section 5-24
Address Instruction
00000 LD
00001 LMT(271)
CIO 0001 D00101 D00100
78CC 4FFF
78CC > 4FFF
D00110
4FFF
A50005 (>) ON
CIO, G, A, T, C, DM
CIO, G, A, T, C, DM, DR, IR
Input
(32,512)
10
Operands
000000
0001
D00100
D00110
E325
327