Rockwell-automation 2706-ND1 DL40 OFFLINE PROGRAMMING SFTWR.USER MANUA Uživatelský manuál stáhnout pdf (Strana 19)

Chapter 2

Introduction to the DL40

2–8

Data Mode Selection

When using the DL40 message display, you can select from two data modes

• binary

• Binary Coded Decimal (BCD) either signed or unsigned

Within any application, triggers and variable data can be in either form. For

example, message triggers can be in a binary format, while variable data can

be BCD.

Message Chaining

The DL40 allows you to create a chain of messages for display in sequence.

Only the first event in the chain need be triggered from outside. Then each

message in the chain can trigger the next until the complete sequence has

run.

Adjustable Parameters for Serial Communications

With the DL40 you can configure RS-232 or RS-485 port parameters as

needed for compatibility with printers, data recorders, slave displays, or

control computers. Configurable parameters include:

• Baud Rate. Available baud rates include:

300 4800

1200 9600

2400 19200

• Parity. You can transmit data with:

Odd parity

Even parity

No parity

• Handshake. You can choose from:

Software

Hardware

None

• Data Bits per Character. Either 7 or 8

• Null Count. From 0 to 255

• Page Width. Between 20 and 132 characters

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Rockwell-automation 2706-ND1 DL40 OFFLINE PROGRAMMING SFTWR.USER MANUA Uživatelský manuál Strana 19