host does not acknowledge the message within the specified interval, the reader times
out and retransmits the message.
The receive timeout is initiated upon receipt of the start-of-message character (!). If the
end-of-message character (CR) is not received within the specified interval, the reader
discards the partially received message and resets its receiver.
Uppercase or lowercase characters are allowed for NN; for example, hex digits A
through F or a through f.
The value for NN specifies the timeout interval as follows:
ms
50 * NN for NN = 01 to FE (1–254)
FE
Factory default (12,700 ms or 12.7 seconds)
FF
Disables the ECP timeout
Reader response:
!Done
CAUTION
Ensure that the ECP timeout is sufficient for a given baud rate.
614N Select Software Flow Control Option
#614N
selects the Software Flow Control option for reader-to-host communications. The
factory default setting is software flow control (XON/XOFF) enabled. During data
mode and command mode operation, the following Software Flow Control options are
available. The N variable specifies Software Flow Control as shown in
.
Table 12 Software Flow Control Commands
Command
Software Flow Control Option
Response
6140
Disable flow control
!Done
6141
Enable software flow control
!Done
If the reader is configured for software flow control (XON/XOFF), it stops transmitting
if it receives an XOFF character (host software Command 13H). It does not resume
transmitting until it receives an XON character (host software Command 11H).
Note: TransCore recommends that XON/XOFF Software Flow Control be disabled while using the
ECP.
6170 Disable Echo Mode (Factory Default)
!
6170
disables the reader’s echo of received host commands. If operating in basic protocol,
the reader echoes by default. As the reader receives a host command, it echoes
each character of the command. Once the entire command has been received and
processed, the reader transmits its response. If echoing is disabled with command
!
6170
, the reader does not echo the command, but only transmits its response. The
reader never echoes while in ECP or download mode operation.
Reader response:
!Done
Chapter 6 Commands
TransCore Proprietary
6–43
