Stored Messages
The MAP460D can store up to 500
user-defined messages. These stored messages were designed to convey
information to the OIT operator and to provide the OIT operator with a means of
changing the operating parameters of the control system.
The MAP460D is line-based, meaning
that each message occupies a single line, not the entire screen. This unique
capability allows the MAP460D to display two different sets of messages at the
same time. When configuring the messages, each message must be assigned to a
specific display line.
Each message can be displayed in
several ways:
 by a request from the PLC
by the OIT operator pressing one of the
function keys on the MAP460D
by another message chaining to it
or by being
designated the "startup" message.
Each message can display:
up to 10
register monitors as read only or read/write
date and time
information from the OIT's real time clock
and characters
from the extended character set.
In addition, each character in a
message (including words, register monitors, etc.) can have the blink attribute
enabled or disabled. If the blink attribute is enabled, the character will
blink once per second for as long as the message is displayed.
Message Chaining
Messages can be chained or linked
together to form multiple line messages. This allows one message request to
display many messages. For example, Messages #5, #10 and #56 are each assigned
to line1. In addition, Message #5 is chained to Message #10 which is chained to
Message #56. When Message #5 is displayed, the OIT operator can press the Right
Arrow keys to display Message #10 and then again to display Message
#56.
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Message chaining can also be
used to display a full screen of information with only one message request. For
example, Message #16 is assigned to line 1 and chained to Message #9 which is
assigned to line 2. When Message #16 is requested, Message #9 is also
displayed.
By chaining the last message in
a chain to the first message, a message loop is created that allows the OIT
operator to scroll through the chained messages until another message is
requested. |
Message Loop |
The ability to chain messages in any
order provides maximum flexibility and speed when setting up the MAP460D for
your application. The configuration process is simple and adjustments can
easily be made later, since you only need to change the order of the messages
instead of changing the messages themselves.
Alarms
The MAP460D has an audible
alert that can be sounded by the PLC when an alarm condition occurs. There are
9 alert types available ranging from a 1 second beep to continuous 2Hz
beeps. |
| Alert
Types |
1 second beep
2 second beep
3 second beep
4 second beep
5 second beep
3 beeps @ 1Hz
5 beeps @ 2Hz
continuous 1Hz beeps
continuous 2Hz
beeps |
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Function Keys
The MAP460D has 12 global function
keys. Each global function key can be programmed as:
Momentary
When the function
key is pressed, the function key coil is set. The coil remains activated for as
long as the function key is held down.
Push On/Off
When the
function key is pressed, the function key coil is set; when the function key is
pressed again, the coil is cleared.
Latch
When the function key
is pressed, the function key coil is set. Only the PLC can clear the
coil.
Message Display
When the
function key is pressed the assigned message is displayed.
Disabled
The function key
is completely disabled; pressing it produces no action.
Special Keys
The Arrow keys move the cursor
between read/write register monitors in a message or move through a group of
chained messages.
The Clear key clears the
current register monitor's contents and activates data entry mode or places the
MAP460D into setup mode when powering up.
The Delete key performs a
destructive backspace at the cursors current position in a register
monitor.
The Enter key accepts the data
entered by the operator and updates the current register.
The Number keys change the
value in a read/write register monitor.
The Toggle key immediately
changes the value in a binary read/write register monitor.
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