6 - 12 Symbol PL4507 Decoder Integration Guide
Check Parity
Parameter # 97h
Select whether or not to check the parity of received characters. Use the Parity parameter to select the type of
parity.
Software Handshaking
Parameter # 9Fh
This parameter offers control of data transmission in addition to the control hardware handshaking offers.
Hardware handshaking is always enabled; you cannot disable it.
•
Disable ACK/NAK Handshaking
: When this option is selected, the decoder neither generates nor expects
ACK/NAK handshaking packets.
•
Enable ACK/NAK Handshaking
: When this option is selected, after transmitting data, the decoder expects
either an ACK or NAK response from the host. The decoder also ACKs or NAKs messages from the host.
The decoder waits up to the programmable Host Serial Response Time-out to receive an ACK or NAK. If the
decoder does not get a response in this time, it resends its data up to two times before discarding the data
and declaring a transmit error.
*Do Not Check Parity
(00h)
Check Parity
(01h)
Disable ACK/NAK
(00h)
*Enable ACK/NAK
(01h)
Summary of Contents for Symbol PL4507
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Page 3: ...Symbol PL4507 Decoder Integration Guide 72E 116649 02 Revision A April 2009 ...
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Page 43: ...Accessories 3 3 Figure 3 2 Symbol SE4500 to PL4507 21 Pin Flex p n 15 113896 01 ...
Page 45: ...Accessories 3 5 Figure 3 4 Symbol PL4507 30 Pin Mating Host Connector p n 50 12167 030 ...
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Page 289: ...Advanced Data Formatting 11 25 Numeric Keypad continued 7 8 9 Cancel ...
Page 334: ...11 70 Symbol PL4507 Decoder Integration Guide Send ALT Characters continued Send Alt Send Alt ...
Page 355: ...Advanced Data Formatting 11 91 Alphanumeric Keyboard Space Single Close Quote Dash ...
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