SSI Interface
7 - 5
ACK/NAK Disabled and Unpacketed ASCII Data
Data captured by the decoder is sent to the host.
Communication Summary
RTS/CTS Lines
All communication must use RTS/CTS handshaking as described in the
Simple Serial Interface Programmer’s
Guide
, p/n 72-40451-xx. If hardware handshaking is disabled or bypassed, the WAKEUP command must be
sent prior to all other communications, or the first byte of a communication message may be lost during the
decoder wakeup sequence.
ACK/NAK Option
Enable or disable ACK/NAK handshaking. This handshaking is enabled by default and Motorola recommends
leaving it enabled. Disabling this handshaking can cause communication problems, as handshaking is the only
acknowledgment that a message was received, and if it was received correctly. ACK/NAK is not used with
unpacketed decode data regardless of whether or not it is enabled.
Number of Data Bits
All communication with the decoder must use 8-bit data.
Serial Response Time-out
The Serial Response Time-out parameter determines how long to wait for a handshaking response before
trying again, or aborting any further attempts. Set the same value for both the host and decoder.
Retries
When sending data, the host should resend twice after the initial send if the decoder does not respond with an
ACK or NAK (if ACK/NAK handshaking is enabled), or response data (e.g., PARAM_SEND,
REPLY_REVISION). If the decoder replies with a NAK RESEND, the host resends the data. All resent
messages must have the resend bit set in the Status byte.
The decoder resends data two times after the initial send if the host fails to reply with an ACK or NAK (if
ACK/NAK handshaking is enabled).
Decoder
Data is captured
by decoder
Host
(1)
ASCII data sent
NOTE
You can temporarily change the Serial Response Time-out when the host takes longer to process an ACK
or longer data string. Motorola does not recommend frequent permanent changes due to limited write
cycles of non-volatile memory.
Содержание PL3307
Страница 1: ...PL3307 DECODER INTEGRATION GUIDE ...
Страница 2: ......
Страница 3: ...PL3307 INTEGRATION GUIDE 72E 149624 01 Revision 11 September 2011 ...
Страница 6: ...iv PL3300 Decoder Integration Guide ...
Страница 15: ...Table of Contents xiii Appendix E ASCII Character Sets Index ...
Страница 16: ...xiv PL3307 Decoder Integration Guide ...
Страница 20: ...xviii PL3307 Decoder Integration Guide ...
Страница 42: ...3 2 PL3307 Decoder Integration Guide Figure 3 1 21 Pin ZIF Connector PL3307 Decoder to Flex Molex 54809 Series ...
Страница 43: ...Accessories 3 3 Figure 3 2 21 Pin ZIF Connector PL3307 Decoder to Flex Molex 54809 Series continued ...
Страница 44: ...3 4 PL3307 Decoder Integration Guide Figure 3 3 Imager Engine to PL3307 21 Pin Flex ...
Страница 47: ...Accessories 3 7 Figure 3 6 PL3307 30 Pin Host Connector Molex 52437 Series ...
Страница 48: ...3 8 PL3307 Decoder Integration Guide Figure 3 7 PL3307 30 Pin Host Connector Molex 52437 Series continued ...
Страница 49: ...Accessories 3 9 Figure 3 8 PL3300 microUSB Host Connector Molex 47346 Series ...
Страница 50: ...3 10 PL3307 Decoder Integration Guide Figure 3 9 30 Pin Vertical ZIF Connector on Host Molex 52559 Series ...
Страница 51: ...Accessories 3 11 Figure 3 10 30 Pin Vertical ZIF Connector on Host Molex 52559 Series continued ...
Страница 52: ...3 12 PL3307 Decoder Integration Guide ...
Страница 93: ...Imaging Preferences 5 9 Frame Rate continued 45 fps 07h 40 fps 08h 30 fps 02h 20 fps 09h 15 fps 03h 10 fps 04h ...
Страница 112: ...5 28 PL3307 Decoder Integration Guide ...
Страница 128: ...6 16 PL3307 Decoder Integration Guide USB Polling Interval continued 5 msec 6 msec 7 msec 8 msec 9 msec ...
Страница 168: ...8 8 PL3307 Decoder Integration Guide Baud Rate continued Baud Rate 460 800 Baud Rate 921 600 ...
Страница 175: ...Serial Interface 8 15 Software Handshaking continued None ACK NAK ENQ ACK NAK with ENQ XON XOFF ...
Страница 255: ...Symbologies 9 71 GS1 DataBar Limited Parameter F0h 53h Enable GS1 DataBar Limited 01h Disable GS1 DataBar Limited 00h ...
Страница 276: ...9 92 PL3307 Decoder Integration Guide ...
Страница 278: ...10 2 PL3307 Decoder Integration Guide ...
Страница 280: ...11 2 PL3307 Decoder Integration Guide ...
Страница 298: ...B 8 PL3307 Decoder Integration Guide ...
Страница 299: ...APPENDIX C SAMPLE BAR CODES Code 39 UPC EAN UPC A 100 123ABC 0 12345 67890 5 ...
Страница 302: ...C 4 PL3307 Decoder Integration Guide QR Code US Postnet UK Postal ...
Страница 334: ......
Страница 335: ......