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PL3307 Decoder Integration Guide
Baud Rate, Stop Bits, Parity, Response Time-out, ACK/NAK Handshake
If you use PARAM_SEND to change these serial parameters, the ACK response to the PARAM_SEND uses
the previous values for these parameters. The new values then take effect for the next transaction.
Errors
The decoder issues a communication error when:
•
The CTS line is asserted when the decoder tries to transmit, and is still asserted on each of 2 successive
retries
•
Failure to receive an ACK or NAK after initial transmit and two resends.
Things to Remember When Using SSI Communication
When not using hardware handshaking, space messages sufficiently apart. The host must not communicate
with the decoder if the decoder is transmitting.
When using hardware handshaking, frame each message properly with the handshaking signals. Do not try to
send two commands within the same handshaking frame.
There is a permanent/temporary bit in the PARAM_SEND message. Removing power from the decoder
discards temporary changes. Permanent changes are written to non-volatile memory. Frequent changes
shorten the life of the non-volatile memory.
Summary of Contents for PL3307
Page 1: ...PL3307 DECODER INTEGRATION GUIDE ...
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Page 3: ...PL3307 INTEGRATION GUIDE 72E 149624 01 Revision 11 September 2011 ...
Page 6: ...iv PL3300 Decoder Integration Guide ...
Page 15: ...Table of Contents xiii Appendix E ASCII Character Sets Index ...
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Page 44: ...3 4 PL3307 Decoder Integration Guide Figure 3 3 Imager Engine to PL3307 21 Pin Flex ...
Page 47: ...Accessories 3 7 Figure 3 6 PL3307 30 Pin Host Connector Molex 52437 Series ...
Page 49: ...Accessories 3 9 Figure 3 8 PL3300 microUSB Host Connector Molex 47346 Series ...
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Page 299: ...APPENDIX C SAMPLE BAR CODES Code 39 UPC EAN UPC A 100 123ABC 0 12345 67890 5 ...
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