ABB 800xA Operation page 192

Direct I/O Area
TLL Tag
Value
Unit
Before changing an output value from this display, the loop must first be turned
off or the value will be overwritten when the loop is processed.
192
A TLL point may also interact with the channel. If both a CCF tag
and a TLL tag are configured, only the CCF Tag will show and the
TLL tag will display a ?.
When a TLL tag is present (Digital I/O only), select the TLL Tag
target area or use the context menu to get the IO Point Faceplate.
Current value of the channel expressed as one of the following:
0 or 1 for digital
A real number for analog inputs and outputs
If the channel type is input, the Value field is not editable.
If the channel type is output, the Value field is editable
(TRIOCONTROL is used for special access rights as described in
800xA for MOD 300 Configuration (3BUR002417*)
Normally, writing an output causes the value to show red until the
value is actually updated. However, writing a forced I/O point in
manual may stay red because no value is ever written back. Use
refresh to update the display.
For Analog I/O Only. The value in the Unit field is always volts (V)
for analog input channels and milliamperes (MA) for analog output
channels.
Section 7 I/O Displays
).
3BUR002418-600 A