9560 Transaction Manager User's Manual - Intermec
9560 Transaction Manager User's Manual - Intermec
9560 Transaction Manager User's Manual - Intermec
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<strong>9560</strong> <strong>Transaction</strong> <strong>Manager</strong> User’s <strong>Manual</strong><br />
5-12<br />
EOM Characters (End of Message)<br />
The EOM character follows the data and indicates the end of a data block. The<br />
EOM character is a protocol character and is not part of the data format. The<br />
<strong>9560</strong> can transmit one or two EOM characters.<br />
If you use NUL for the first EOM character, the reader transmits the ASCII<br />
NUL character (00 Hex) and disables communications from the host. If you<br />
enter NUL for the second EOM character, the reader disables the second<br />
character and transmits nothing for the character. The characters cannot be the<br />
same, unless both are NUL.<br />
Error Checking<br />
In User-Defined protocol, the reader can add a Longitudinal Redundancy<br />
Check (LRC) character to data transmissions. The host must have software to<br />
handle the LRC.<br />
The LRC character is the exclusive “OR” of the seven (or eight) data bits in the<br />
data block. The LRC character is the last character sent, but it is not part of the<br />
data. For more detailed information, refer to the Data Communications Reference<br />
<strong>Manual</strong>.<br />
Displaying Data on the <strong>9560</strong><br />
The <strong>9560</strong> has either a 2-line by 40-character standard display or a 1-line by<br />
20-character oversize display. You can scroll the standard display back two<br />
lines. You can scroll the oversize display back three lines, one line at a time.<br />
Note: The keypad on the <strong>9560</strong> does not provide keys for scrolling. You must use an<br />
IRL program, scan bar code command labels, or use the arrow keys on the 1700<br />
keyboard to scroll the display.<br />
Types of Data Displayed<br />
The reader distinguishes between four data types for the display:<br />
Input data All data entered from the keyboard or an input device. This includes<br />
IRL program statements being entered and displayed in the editor.<br />
Host messages Any message received from the host at the reader modem port<br />
with the correct protocol. Host messages can interrupt the current display at<br />
any time.<br />
Reader prompts All messages to the operator, such as those that occur during<br />
Prompting Configuration, with the exception of those messages that describe<br />
errors. This also includes IRL prompt statements when an IRL program is<br />
running.
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