Maple Systems OIT Family (ASCII) User Manual
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ASCII String: This format is used to represent a single coil in the OIT as a binary value with
user-definable strings that will indicate whether the coil is on or off. The strings can be up to
eight characters in length. Two ASCII strings are created to represent the OIT coil when it is
on or off. For example, the ASCII string Running may be created to represent the OIT coil
when it is on and the ASCII string Stopped may be created to represent the OIT coil when it
is off. A maximum of 30 ASCII strings may be programmed into the OIT, with each OIT coil
capable of using any two of the ASCII strings. All of the ASCII strings can be shorter than
eight characters in length. Therefore, the length of the monitor should be set to match which-
ever of the two ASCII strings referenced is longer.
Bar Graph (OIT5400 only): This format is used to represent a signed 16-bit register as a bar
graph. The bar graph can be setup as a horizontal or vertical bar graph. The width and height
of the bar graph can be defined, as well as adding a percentage sign that is displaced in the
middle of the bar graph. Low and high limits are established to set the range that the bar
graph will cover. (Example: If the register range always falls within -100 to +100, then the
low and high limits for the bar graph are set accordingly for maximum resolution.)
Register Monitor Attributes
Adjustable Register Monitor Width: When register monitors are embedded into a screen
within the OIT, the number of character positions that the monitor occupies is programmable. This
isusefulforshorteningthenumberofcharacterpositionsaregistermonitorrequireswhentherange
of data is known. For example, there is no reason to display five characters for the Decimal format
when the system programmer knows that the register monitor being displayed never exceeds 99. In
this case, the system programmer may opt to set the register monitor width to two to save space on
the display. If the data read from the OIT register requires more space than has been allocated to the
register monitor, the overload character ‘#’ will be displayed in each character position within the
register monitor’s data field until a number that is within range is read.
Note: Some of the register monitor field attributes (such as decimal point, commas, etc.) will
increase the number of character positions that the register monitor will occupy on the
screen. When commas are selected, the increase in character positions will be dependent
on the data format and existing field width.
FEATURES
37
1010-0088, REV02
2
3
4
6
5
7
8
MESSAGE ALARM
RUN
1
Sw1 Toggles->
Value: Closed
Arm: Up
Actuator: Right
Conveyor: Fast
S1
S2
S3
S4
S5
S6
S7
S8
Message
Alarm
Run