Panasonic FP-E Programming Manual page 90

Relays, Memory Areas and Constants
Modification of relay numbers specified by basic instructions
Number = Base number + value in I0 through ID (K constant / H constant)
Example: Modifying X10
IAX10
Base number
Example 1: Modifying a trigger
R0
I0X0
The trigger of the F35 (+1) instruction is determined by the
DT0 value.
When the value of DT0 is K10, the F35 (+1) instruction is
executed when XA goes on.
I0
↓
K10
10
Example 2: Modifying an output destination
R0
X0
The value of DT2 determines the output destination when X0
goes on.
When the value of DT0 is HF and X0 goes on, Y1F goes on.
I0
↓
HF
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IA value
10 + H0
10 + HF
10 + H−10
19 + K7
19 + K−11
F0 MV, DT 0, I0
F35 +1, DT100
X0 XA
→
↓
+ 0 = 10 (decimal) → A (hexadecimal)
F0 MV, DT 2, I0
Y10 Y1F
→
↓
F + 10 = 1F
Target number
= X10
= X1F
= X0
= X20
= XE
I0 setting
I0 setting
I0Y10