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AVEVA™ Communication Drivers

Supported data types

  • Last UpdatedSep 16, 2024
  • 1 minute read

The data type is specified as a suffix in the item syntax.This Communication Driver supports the following datatypes.

DataType

Suffix

Description

Range of Values

Boolean

by bit

Single bit.

0 or 1

Short

@Short, S

Signed, 16-bit decimal. Bit0 is the low bit. Bit14 is the high bit. Bit 15 is the sign bit.

-32768 to 32767

Word

@Word, U

Unsigned, 16-bit decimal. Bit0 is the low bit. Bit15 is the high bit.

0 to 65535

Long

@Long, L

Signed, 32-bit decimal. Bit0 is the low bit. Bit30 is the high bit. Bit 31 is the sign bit.

-2147483648 to 2147483647

DWord

@DWord

Unsigned, 32-bit decimal. Bit0 is the low bit. Bit31is the high bit.

0 to 4294967295

Float

@Float, F

32-bit real number.

N/A

BCD

@BCD, B

Two-byte packed BCD. Value range is 0–9999. Behavior is undefined for values beyond this range.

0 to 9999

LBCD

@LBCD, M

Four-byte packed BCD. Value range is 0–99999999. Behavior is undefined for values beyond this range.

0 to 99999999

String

C

Null terminated ASCII string.

2 to 80 characters per string

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