Yaskawa Remote Display Controller LAN Node PCB for use with Microtrac DSD LAN User Manual

Page 7

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4. “ERR-MSG CONFLICT”. This message

will be displayed to indicate that more

than one drive attempted to assign a

menu item to the same menu item

number of the same default menu as

another drive. For example, Drive A

sends a default menu item to RDU 1,

menu item 3. Some time later, Drive

B sends a default menu item also to

RDU 1, menu item 3. When menu item

3 of RDU 1 is selected to be displayed,

the RDC will display “ERR-MSG

CONFLICT” on the RDU’s display to

warn of this error condition. This

error condition may be cleared by

removing the mistake in the PAC

programs and then reinitializing the

system. Another way to clear it is to

use the PCDU to create a menu item to

override the default menu item which is

in conflict.

RDU KEYPAD FUNCTIONS

General

A keypad connected to any RDU may

start a keypad sequence. However, once a

keypad sequence is started, it must be

completed before a keypress from a keypad

connected to a different RDU, or any push

button input, is recognized.

7

Up to 60 seconds are allowed

between keypresses. If a keypad sequence

has started and 60 seconds have elapsed

since the last keypress, then the keypad

sequence will be aborted. Furthermore, the

RDUs will revert to showing the messages

that were displayed previous to the start of

the sequence.

There is an auto-repeat function on

the keypresses. A keypad key will auto-

repeat at a rate of 6 presses/second if a key

is pressed for more than 0.5 second.

The keypad sequences allow for

number modification. On the first press of

a digit or a decimal point, the digit display

will blank and echo the keypress. Pressing

more digits will continue to echo the

pressed digit into the least significant

location while the previously entered digits

are shifted one significant digit to the left.

This may continue until the digit limit is

reached, and then no further digits will be

accepted until the number is entered or the

CLEAR key is pressed. The entered

number will be checked for errors (i.e.

number within range, number may be

modified, etc.) and then the appropriate

action will be taken. If CLEAR is pressed,

then the number that was displayed prior

to the start of the modification will be

shown.

The up and down arrows may be

used to increment or decrement a number.

Pressing the up or down arrow key on an

unmodified number will start a number

modification key sequence. The sequence

may be ended by entering the number or

pressing the CLEAR key. Pressing the up

or down arrow keys after a number has

started to be entered will stop the number

entry mode and increment or decrement

the displayed number. If a digit or a

decimal point key are pressed after

pressing the up or down arrow keys, then

the digit display will blank and echo the

keypress once again.

RD 790-20

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