Toshiba HX7+ ASD - Command and Frequency Control Selections; Override Hierarchy

48 HX7+ ASD Installation and Operation Manual
Command and Frequency Control Selections
Using F003 and F004, the user may select a Command source and a source for Frequency control. The
default settings for Command and Frequency control are Terminal Board and RR, respectively.
To be placed into the Override mode, there need only be a valid signal received from one of the signal
sources. If the valid signal is received via a signal source with a higher priority, it will supersede the
command or frequency command received from another source.
The signal sources are continuously scanned to determine if any of the listed items are actively
providing an input signal.
If no activity is detected on any of the listed signal sources, the settings of F003 and F004 will be used
for Command and Frequency control, respectively.
Any or all of the Command and Frequency control input sources may be placed in the Override
mode.
Placing the HX7+ ASD in the Local mode (Local|Remote LED on) via the keypad places the RS232/
RS485 or the TTL control selections in the Override mode for Command and Frequency input. This
selection is further defined by the setting of Program  Communication  Communication Settings 
LCD Port Connection.
The Local|Remote control Override feature for Command and Frequency (or either) may be enabled/
disabled at Program Utility Parameters Prohibition Local|Remote Key Command or
Frequency Override.
Communications may be used to place the remaining Command and eligible Frequency control input
sources in the Override mode. Once placed in the Override mode the setting is valid until it is
cancelled, the power supply is turned off, or the ASD is reset.
Command and Frequency-Control Override Hierarchy
Table 12 lists the input conditions and the resulting output control source selections for Command and
Frequency control Override operation. The HX7+ ASD reads the command registers of the listed
control items from the left to the right. In the table the number 1 indicates that a valid input signal is
being active for that input source; X = Don’t care; 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 12. Command and Frequency Control Hierarchy.
Priority Level 1 2 3 4 5
Command/
Frequency Mode
Communication
Card
RS232/
RS485
TTL
Terminal Board
(Binary/BCD Input)
F003/F004
Communication Card 1 X X X X
RS232/RS485 0 1 X X X
TTL 0 0 1 X X
Terminal Board 0 0 0 1 X
F003/F004 Setting 0 0 0 0
F003/ F004 Setting