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Standard Items

See Device Standard Items.

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ItemData TypeDescription

DB[BlockNum]:B[0ffset]

UI1

Data block Byte. Reads a single Byte starting with the offset specified. 

Example: DB1:B1, Read the Data Block Byte starting at offset 1 of Data Block number 1.

DB[BlockNum]:X[Offset].[0-7]

BOOLEAN

Data block boolean. Reads a single bit index from the offset specified. 

Example: DB1:X1.0, Read the Data block bit in the first (0) position starting at offset 1 of Data Block  number 1.

DB[BlockNum]:W[Offset]

UI2

Data block WORD. Reads two consecutive bytes as a WORD starting from the offset specified. 

Example: DB1:W2, Read the two-byte WORD starting at offset 2 of Data Block number 1.

DB[BlockNum]:D[Offset]

UI4

Data block DWORD. Reads four consecutive bytes as a DWORD starting from the offset specified. 

Example: DB1:D2, Read the four-byte DWORD starting at offset 2 of Data Block number 1.

DB[BlockNum]:R[Offset]

R4

 Data block REAL. Reads four consecutive bytes as a REAL number starting from the offset specified.  Example: DB1:R2, Read the four-byte REAL starting at offset 2 of Data Block number 1.

PLC Counters and Timers

*Support for these data types are still in development. Not available for S7 1200/1500 model PLC's. 

ItemData TypeDescription

C[Number]

UI2

Counter. 

Example: C1, Read the Counter WORD at position 1

T[Number]

UI2

Timer

Example: T1, Read the Timer WORD at position 1

Extended Items

*Support for these functions are still in development. Time Sync not available for S7 1200/1500 model PLC's. 

ItemData TypeDescription

LastTimeSync

Date

Timestamp of the last time sync.

LastTimeSyncResult

I4

Result code for the last time sync: 0 for no error or alarm.  Error and alarm result code values are set in the Time Sync object

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TimeSync

I2

Synchronize Time