Override Operation
The command registers of the listed signal sources are scanned in the order that they are listed in
Table 5 to determine which input sources are in the Override mode. During each register scan cycle, the first item detected as having the Override function turned on is the selection that is used for Command or Frequency control input.
The Override control setting supersedes the setting of the Command mode setting (F003) and the Frequency mode setting (F004). However, the F003 and F004 settings will be used in the event that the register scan returns the condition that none of the listed items have the Override feature turned on (see Table 5).
Command and Frequency-Control Override Hierarchy
Table 5 lists the input conditions and the resulting output control source selections for Command and Frequency control Override operation. The G7 ASD reads the command registers of the listed control items from the left to the right. In the table the number 1 indicates that the Override feature is turned on for that control input source; X = Don’t are; and 0 = Override Off.
The first item to be read that has the Override feature turned on will be used for Command or Frequency control.
Table 5. Command and Frequency control hierarchy.
1 | 2 | 3 | 4 | 5 | 6 | Priority Level | |
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Communication | RS232/ | Common | Panel | Control Terminal | F003/F004 | Command/ | |
(LED | |||||||
Card | RS485 | Serial | (Binary/BCD Input) | Frequency Mode | |||
Keypad) |
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1 | X | X | X | X | X | Communication Card | |
0 | 1 | X | X | X | X | RS232/RS485 | |
0 | 0 | 1 | X | X | X | Common Serial | |
0 | 0 | 0 | 1 | X | X | Panel (LED Keypad) | |
0 | 0 | 0 | 0 | 1 | X | Control Terminal | |
0 | 0 | 0 | 0 | 0 | F003/F004 Setting | F003/F004 Setting |
Command Control Selections
The following is a listing and description of the
Command Mode (F003) selections (Program ⇒
Fundamental Parameters ⇒ Standard Mode Selection ⇒
Command Mode).
Settings:
Use Control Terminal Strip
Allows for Command control input via the
Use LED Keypad Option
The LED Keypad is unavailable at the time of this release.
Use Common (TTL)
Set the LCD Port Connection to Common Serial (TTL) to use this feature.
Use RS232/RS485
Set the LCD Port Connection to RS232/RS485 to use this feature.
Use Communication Card
Routes the control and monitoring I/O to CNU3 of the Control Board of the G7 ASD (Communication Card connector).
34 | G7 ASD Operation Manual |
