Device Point Properties

On the Device tab in the Point Properties dialog box:

Update Criteria

The update criteria field determines how the data will be requested.

 

Select On Change or On Scan for points whose values should be polled by the Siemens TI driver at regular intervals.

 

Select On Demand On Scan or On Demand On Change for points whose values should be polled by the Siemens TI driver at regular intervals while users are viewing them.

Address

A Siemens TI device point address consists of a one to three character alphabetic field followed by an n-digit decimal-numeric field. The numeric field reflects the offset within an addressing domain of the particular point. The alphabetic fields map to domains according to the following table:

 

Enter the point address.

Valid data types, address formats, memory ranges and data types for point addresses are:

Data Memory Type

Address Format

Memory Range

Data Type

Discrete input registers

Xn

1 - 2048

Digital

Discrete output registers

Yn

1 - 2048

Digital

Word input registers

WXn

1 - 2048

Analog

Word output registers

WYn

1 - 2048

Analog

Constant Memory

Kn

1 - 2048

Analog

Variable Memory

Vn

1 - 32768

Analog

Internal Control Relays

Cn

1 - 4095

Digital

Timer/counter current values

TCCn

1 - 1024

Analog

Timer/counter preset values

TCPn

1 - 1024

Analog

Note: Since discrete inputs (X) and discrete outputs (Y) share the same memory type, do not use the same register number for a discrete input and a discrete output (for example X0001 and Y0001) or unexpected results may occur.

Since word inputs (WX) and word outputs (WY) share the same memory type, do not use the same register number for a word input and a word output (for example WXOOOI and WYOOOI) or unexpected results may occur.

Normally TCC and TCP memory types share the number. For example, TCC5 and TCP5 share the same address.

More information

Siemens TI Communications point configuration.