Rockwell-automation 2707-NP DTAM Programming Software Instrukcja Użytkownika Pobierz pdf (Strona 147)

Chapter 18

DTAM Plus ASCII Bar Code Input

18–3

After creating the data entry screen and downloading the application to the

DTAM Plus, bar code data can be scanned into the data entry field.

1. Setup the bar code scanner to match the message format the DTAM Plus

is expecting:

• Prefix = STX

• Preamble = None

• Code ID = None

• Postamble = None

2. Configure the DTAM printer port and the bar code scanner’s

communication port to match:

• Baud Rate = 300, 600, 12000, 24000, 48000, 96000, 19200 with 9600

as both the scanner and the DTAM default.

• Data Bits = 8

• Stop Bits = 1

• Parity = Odd, Even, or None with None as the DTAM default.

3. Connect the DTAM to the bar code scanner as described in the DTAM

Plus user manual.

4. When the bar code entry screen is displayed, data can be scanned in.

Here are some items you should note when using a bar code scanner.

• Odd character counts from the scanner are rounded up to create even

byte counts. This facilitates word writes to the controller. The last

character written is a Null.

• When displaying a bar code input data entry display the following

DTAM keys are active:

MAIN

and the following keys are inactive:

EXP

and the key is not available for printing screens

• If keypad entry is enabled, the operator can enter the ASCII

character’s decimal equivalent value into the data entry field. The bar

code ASCII input is also enabled at the same time. This allows input

from both sources. For example, an operator can manually enter 3

characters and then scan a bar code containing 8 characters. The

DTAM then would write all 11 characters to the controller.

Entering Data with a

Bar Code Scanner

1 2 ... 142 143 144 145 146 147 148 149 150 151 152 ... 183 184

Brak uwag

Rockwell-automation 2707-NP DTAM Programming Software Instrukcja Użytkownika Strona 147