EZ EZ-220, Hardware Manual

Page: 41 / 150

37
EZ-TEXT-M-E
Text Panel Hardware Manual
has been triggered. This delay is to ensure that the message has been seen
by the operator. After the 3 seconds, press the
esc key and you will return to
Local Message mode. If you press the esc key again, the last PLC Message
will be redisplayed.
Static Message Operation
To display a Static PLC message, you simply put the message number (1–256)
in the appropriate PLC register. These messages are text only, no embedded
data.
Dynamic Message Operation
Dynamic messages are text messages that include embedded data. These
messages present the operator with important PLC data. You may program
message numbers 1–256 to be used as dynamic messages. Dynamic messages
may be displayed on either the top or bottom line. The maximum number of
digits that may be displayed is fi ve (if Binary data format or four if BCD). Use
the EZSeries Set Point Display Text Panel Programming Software to confi gure
Dynamic messages. See Section 7
, Confi guration, for more information.
Interactive Message Operation
An interactive message is a text display that allows operator data entry. Use these
messages to enter or change values that are stored in PLC registers. When the
interactive message is displayed, the operator can enter data. Check the PLC
product user manual to verify which data formats are supported. Depending on
the PLC, the data format will be either Binary or BCD ( Binary Coded Decimal).
Five digits may be entered in a 16-bit register using Binary data format. Four
digits may be entered in a 16-bit register using BCD data format.
Interactive messages are confi gured within the EZSeries Set Point Display Text
Panel Programming Software by embedding a DATA 1 value in a PLC message.
An interactive message requires that you defi ne the Format (Binary or BCD), and
Decimal Point Position. There are two types of decimal point placements — PLC
controlled and fi xed placement (decimal point entered between characters when
confi guring the message). A PLC controlled decimal is only allowed in DATA
1. DATA 2 and DATA 3 allow you to enter a fi xed point (manually inserted). Two
PLC registers are used to store PLC controlled decimal point values, one for the
data value and the other for decimal point control. When the decimal point is PLC
controlled it must be confi gured in your PLC logic program. For more information,
see Chapter 5,
Confi guration, or your PLC Confi guration Manual.
Arrow Adjustment Entry
Arrow adjust is often used when minimum and maximum setpoint ranges are
required or a setpoint value requires only minor adjustment. These arrow