Yaskawa Remote Display Controller LAN Node PCB for use with Microtrac DSD LAN - Manual (Page 8)

8
The +/- key may also be used in the
number modification process. The function
of this key is to change the sign of the
displayed number. The actual sign change
will not be accepted until the number is
entered.
The CLEAR key can be pressed to
erase mistakes. When a wrong number is
entered, CLEAR may be pressed to show the
original number. If a bad key sequence has
been started and not completed, then the
CLEAR key may be pressed several times to
“back out” of the sequence.
Displaying Drive Name and Units
The NAME key may be pressed to
view the drive name, the source of the data,
and the units of the data. These items will
be shown in the alpha-numeric display of
the RDU. All of the unlocked RDUs
connected to the same RDC will also show
their drive name and units when the NAME
key is pressed.
Selecting the Next Menu Item
The NEXT key may be pressed to view
the next higher numbered menu item in the
RDU’s menu. If the highest numbered
menu item is currently being displayed,
then the lowest numbered menu item will be
shown next. Each press of the NEXT key
will scroll to the next higher numbered
menu item.
Selecting a Menu Item Directly
Entering the menu item number
followed by pressing the NEXT key will show
that menu item. If there is no menu item at
the entered menu item number, then “ERR-
ITEM #” will show in the RDU’s alpha-
numeric display, for 1.5 seconds, and then
the data that was displayed prior to the start
of the modification will be shown.
Modifying Numeric Information
Some data displayed on an RDU may
be modified. The desired number may be
entered by using any of the previously
described keypad number modification key
sequences. After the desired number is
displayed on the RDU, press the ENTER key
to enter the number. The entered number
will then be compared to the allowable input
limits (as programmed in the PAC diagram).
If within the limits, then the value will be
sent to the drive. If a limit is exceeded, then
the exceeded limit will be displayed and an
error message will display to state which
limit was exceeded. The exceeded limit
number can then be entered by pressing the
ENTER key (and be sent to the drive) or
modified as desired followed by pressing the
ENTER key once again.
Displaying/Temporarily Modifying Source of
Display Information
Pressing the DRIVE key on the key-
pad will display the Selected menu item’s
menu item data (the source of the displayed
information). The alphanumeric display will
show the following:
“DWW CXXX SYYY .Z”
where WW = Drive #
XXX = Channel #
YYY = Subchannel #
Z = Decimal position
Any of the displayed fields (Drive #,
Channel #, Subchannel #, or decimal
position) may be modified by using any of
the keyboard number modification
sequences. The number to be modified is
indicated by a flashing prompt (D, C, S, or .).
The number modification progresses from
left to right (from D to C to S to .), so if a
mistake is made and not noticed until after
the number has been entered, then the only
way to correct it is to start the whole
sequence over again. Pressing the CLEAR
key before modifying a number field will
abort any modifications and return to
showing the Selected menu item.
If any of the displayed fields were
RD 790-20