Symbol Technologies MicroBase MRC-921 - Manual (Page 23)

Communicating data
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After the MRC-921 has been connected to the host
and properly configured, communication usually
follows this general pattern:
1. All three units (PTC-921, MRC-921, and host) are
turned on.
The default message is usually an
asterisk (*). 2. The PTC-921 initiates communication with the
MRC-921. After a successful logon, a default
message displays on the PTC’s screen.
3. Data is entered (either by being scanned or typed
with the keyboard) into the PTC-921.
The data usually includes the PTC
unit ID, the data-entry type (scanned
or keyed), and the bar-code type. 4. The data is sent via the PTC-921’s MicroRadio to
the MRC-921.
5. The MRC-921 forwards the data to the host.
Refer to the MRC-921 Technical
Reference for a list of messages that
may display on the PTC’s screen. 6. If the data is received successfully, an asterisk
displays on the PTC-921’s screen.
If the data is not received successfully, an RF link
error displays on the PTC-921’s screen.
7. Communication continues with the PTC-921
sending data to the host through the MRC-921.
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