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(271)
LMT 0001 D00100 D00110
0000
00
327
Address
Instruction
Operands
00000
LD
000000
00001
LMT(271)
0001
D00100
D00110
4FFF
CIO 0001
41F5
D00110
41F5
E325
E325 < 41F5 < 4FFF
4FFF
CIO 0001
78CC
D00110
4FFF
E325
A50005 (>) ON
D00101 D00100
D00101 D00100
78CC > 4FFF
5-24-3 DEAD-BAND CONTROL: BAND(272)
(272)
BAND
S
C
D
Ladder Symbol
Variations
↑
BAND(272)
Operand Data Areas
D: Output word
CIO, G, A, T, C, DM, DR, IR
C: First limit word
CIO, G, A, T, C, DM
S: Input word
CIO, G, A, T, C, #, DM, DR, IR
Description
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
Lower limit data (dead band lower limit)
C+1
Upper limit data (dead band upper limit)
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.
Upper limit (C+1)
Output
Input
Lower limit (C)
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:
8000 –
0100
=
7F00
(–32,768)
10
(256)
10
(32,512)
10
PID and Related Instructions
Section 5-24
Summary of Contents for CVM1D
Page 462: ...SYSMAC CVM1D Duplex System Programmable Controllers Operation Manual Revised August 2001...
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