Dtcb (Data Combine) - IDEC MICROSmart FC6A Series Ladder Programming Manual

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DTCB (Data Combine)

Valid Devices

S1 (Source 1)

D1 (Destination 1)

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

Special internal relays cannot be designated as D1.

When T (timer) or C (counter) is used as D1, the data is written in as a preset value (TP or CP) which can be 0 through 65,535.

Source device S1 uses 2 data registers starting with the device assigned by S1.

Since the DTCB instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction should be used.

Valid Data Types

D (double word)

Example: DTCB

S1, S1+1 → D1

When input is on, the lower-byte data is displayed from 2 consecutive sources starting with device

assigned by S1 and combined to make 16-bit data. The lower byte data from the first source device

is moved to the upper byte of the destination assigned by device D1, and the lower byte data from

the next source device is moved to the lower byte of the destination.

Binary data to combine

Destination to store results

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

destination, 16 points (word data) are used.

When a word device such as T (timer), C (counter), or D (data register) is assigned as the source or destination,

1 point (word data) is used.

Before Execution

After Execution

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