Relays, Memory Areas and Constants
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Items requiring particular attention
For the external input relay (X), external output relay (Y), and internal relay (R), when
using index modification on relay numbers, be aware that the last digit of the relay
number is hexadecimal and the first digits are decimal.
Example: For external input relay (X)
Decimal
1, 2, 3 ............12
Hexadecimal
0, 1, 2, 3 ........ 9 A,B ........ F
X0,X1 XF.....................
X 10, X 11 X 1F.....................
X 20, X 21 X 2F.....................
×
Example using I0X0
Value of I0 Target address
K H
0 0 X0
1 1 X1
: : :
9 9 X9
10 A XA
: : :
15 F XF
16 10 X10
: : :
31 1F X1F
: : :
159 9F X9F
160 A0 X100
161 A1 X101
: : :
255 FF X15F
256 100 X160
257 101 X161
: : :
265 10A X169
267 10B X16A
: : :
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