TI505 Driver Addressing

VTScada provides an Address Select dialog (Address Assist / Address Select) to help you build I/O addresses that work with your TI505 Device driver.

 

TI505 addresses take the form, MemoryClass followed by an Address number. For example, WX100 for Word Input at address 100.

Memory Class

Available memory classes include:

Memory Class Name	Memory Class
V Memory	V
Memory	K
Discrete Input Packed	X
Discrete Output Packed	Y
Control Register Packed	C
Word Input	WX
Word Output	WY
Timer/Counter Preset	TCP
Timer/Counter Current	TCC
Drum Step Preset	DSP
Drum Step Current	DSC
Drum Count Preset	DCP
System Status Word	STW
Drum Current Word	DCC

 

PID Loop Variables

Support is provided for the following dot variables:

• LKC.
• LPV.
• LSP.
• LMN.
• LERR.
• LMX.

 

Bit Number

A bit number can be enabled for reading inputs, but do not use for writing.

Note that the maker of the TI505 device uses a very different bit numbering convention for its hardware than the VTScada standard:

• 16-bit data is numbered 1..16 instead of 0..15.
  Bit 1 is the most-significant bit, and Bit 16 is the least significant bit

• 32-bit data is numbered 1..32.
  Bit 1 is the most-significant bit of the most-significant byte.

To accommodate this, I/O addresses for the TI505 accept both bit conventions:

• Traditional VTScada bit numbers are preceded by the '/' character.
  Example: V200/0
• SIEMENS bit numbers are preceded by the "." character.
  Example: V200.16

The Address Assist module has been modified to account for this. The "Enable Bit Number" option is now a radio button control that offers three options:

• Disable Bit Number
• VTScada Bit Number
• SIEMENS Bit Number