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Interrupt Functions Section 5-1
X/XA CPU Units Input Terminal Arrangement
Input Function Settings in the PLC Setup
The CPU Unit’s built-in inputs can be set for high-speed counter inputs in the
PLC Setup’s Built-in Input Tab. (When an input is set for use as a high-speed
counter input, the corresponding words and bits cannot be used for general-
purpose (normal) inputs, input interrupts, or quick-response inputs.)
Input terminal
block
Bit function when the high-speed counter is enabled by
selecting “Use high-speed counter
@” in the PLC Setup
Word Bit
CIO 0 00 ---
01 High-speed counter 2 (Phase Z or reset input)
02 High-speed counter 1 (Phase Z or reset input)
03 High-speed counter 0 (Phase Z or reset input)
04 High-speed counter 2 (Phase A, Increment, or Count input)
05 High-speed counter 2 (Phase B, Decrement, or Direction input)
06 High-speed counter 1 (Phase A, Increment, or Count input)
07 High-speed counter 1 (Phase B, Decrement, or Direction input)
08 High-speed counter 0 (Phase A, Increment, or Count input)
09 High-speed counter 0 (Phase B, Decrement, or Direction input)
10 High-speed counter 3 (Phase A, Increment, or Count input)
11 High-speed counter 3 (Phase B, Decrement, or Direction input)
CIO 1 00 High-speed counter 3 (Phase Z or reset input)
01 to 11 ---
00
02 04 06 08 10 00 02 04 06 08 10
L1 L2/N COM 01 03 05 07 09 11 01 03 05 07 09 11
LG
Inputs (CIO 0)
Inputs (CIO 1)
High-speed counter 1
(Phase B, Decrement,
or Direction input)
Upper Terminal Block
(Example: AC Power
Supply Modules)
High-speed counter 1
(Phase Z or Reset input)
High-speed counter 1
(Phase A, Increment, or
Count input)
High-speed counter 3
(Phase B, Decrement, or
Direction input)
High-speed counter 3
(Phase Z or Reset input)
High-speed counter 3
(Phase A, Increment, or
Count input)
High-speed counter 0
(Phase A, Increment, or
Count input)
High-speed counter 2
(Phase A, Increment, or
Count input)
High-speed counter 2
(Phase Z or Reset input)
High-speed counter 2
(Phase B, Decrement,
or Direction input)
High-speed counter 0
(Phase B, Decrement,
or Direction input)
High-speed counter 0
(Phase Z or Reset input)