Maple Systems MAPware-100 - Manual (Page 19)

correspond to a displayable ASCII character, then the OIT will continue to show the last
displayable ASCII character that was in the PLC register, or if there never was one, then a
space will be shown.
• ASCII String—This format is used to represent a single coil in the PLC 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. When this format is selected, the ASCII Text box in
Field Attributes becomes enabled. Use this field to select the ASCII string which will
represent value 0, and the ASCII string which will represent value 1. The ASCII Table
command button is used to create the ASCII strings (maximum of 30).
• Time (12 hour)—This format is used to represent the time of the built-in clock of the OIT
in 12-hour (a.m./p.m.) format. It does not require the use of a PLC register.
• Time (24 hour)—This format is used to represent the time of the built-in clock of the OIT
in 24-hour (military time) format. It does not require the use of a PLC register.
• Date (US)—This format is used to represent the date of the built-in clock of the OIT in
MM/DD/YY (US) format. It does not require the use of a PLC register.
• Date (Euro)—This format is used to represent the date of the built-in clock of the OIT in
DD/MM/YY (European) format. It does not require the use of a PLC register.
Note: The Time/Date formats are available for the MAP460D only. Each screen of the OIT is
capable of displaying a maximum of two time/date registers.
Field Attributes Group Box
The Field Attributes box is used to alter how the register monitor is displayed. All changes
made within this box are reflected in the Example box at the top of the window.
Access
The register monitor can be configured as a read-only register or a read/write register.
Read-only register monitors only allow the operator to view their contents. Read/write
register monitors allow the operator to alter the data within the PLC’s register or coil.
Attributes
The width of the register monitor is adjusted using the Number of Digits box. The actual
width may be directly typed in, or you may use the mouse to scroll through the available list
of options using the spin buttons (up and down arrows located adjacent to the data entry box).
It is important to note that this entry only controls the number of digits that are displayed
(including the sign), not the actual field width. If commas or a decimal are added, the field
width will be wider than Number of Digits. Field width is governed by the register monitor
format.
A decimal may be placed anywhere within the register monitor field. Adding a decimal
place to the register monitor formats the PLC register information prior to displaying it on
the OITs display. For example, if a register within the PLC contains 32768, this data may
be displayed as 327.68 or 3.2768 depending on what the register represents. The location
of the decimal point is completely controlled via the system programmer. Enter the correct
decimal location within the Decimal Location: box, select 0 to disable the decimal point
altogether. The decimal location value increases as the decimal point moves from right to
left (i.e. 1=3276.8, 2=327.68, 3=32.768, etc.).
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