Xchg (Exchange) - IDEC MICROSmart FC6A Series Ladder Programming Manual

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XCHG (Exchange)

Valid Devices

D1 (Destination 1)

D2 (Destination 2)

For valid device address ranges, see "Device Addresses" on page 2-1.

Special internal relays cannot be designated as D1 or D2.

Valid Data Types

D (double word)

Examples: XCHG

• Data Type: Word

When input I0 is turned on, data of data registers D21

and D24 assigned by devices D1 and D2 are exchanged

with each other.

• Data Type: Double Word

D31·D32 ↔ D37·D38

When input I1 is turned on, data of data registers

D31·D32 and D37·D38 assigned by devices D1 and D2

are exchanged with each other.

Double-word data:

When input is on, the 16- or 32-bit data in devices assigned by D1 and D2 are exchanged with

First device address to exchange

When a bit device such as Q (output), M (internal relay), or R (shift register) is assigned as the destination, 16

points (word data) or 32 points (double-word data) are used.

When a word device such as D (data register) is assigned as the destination, 1 point (word data) or 2 points

(double-word data) are used.

D1·D1+1 → D2, D2+1

Before Exchange

Before Exchange

After Exchange

After Exchange

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