Causes of runtime errors for a piloted control list selector

At runtime, the application logs errors to diagnostics about the piloted control list selector under these circumstances:

Operator input to a remotely controlled list

If the list is remotely controlled, and the operator tries to use a key button or keyboard cursor key on it, the application logs an error.

Value connection unassigned

If the list is operator controlled and Write on enter on the General tab is not selected:

If the user selects a state whose access on the

States

tab is set to

Operator

or to

Operator and Remote

, and the Value connection is unassigned:

If the list is operator controlled and Write on enter on the General tab is selected:

If the user presses an

Enter

key or button, and the selected state's access on the

States

tab is set to

Operator

or to

Operator and Remote

, and the Value connection is unassigned:

Invalid values

If a state’s value is too large for the data type of the tag assigned to the Value connection, or if the value is outside the assigned tag’s minimum and maximum values:

For example, the state value is too large for the tag’s data type if your data source is a

PLC-5

, the state value is 2,147,483,647, and the assigned tag is an integer tag using the address N7:0. Integer tags have a range of -32,768 to 32,767 only.

If Enter key handshaking is set up and "Write on enter" is selected on the

General

tab, the Enter connection is not set to 1, and the handshake timers do not begin timing.

Enter key handshaking in effect

If the control list selector’s

Enter

key handshaking is still in effect when the operator presses the

Enter

button: