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Confidential
If an application program is written in Visual C or some other language that uses the WIN API
directly, you can set the flow control settings in either of the following ways:
When JP32 on the POS board is SHORTED
TM Printer control:
CustomerDisplay control:
Note:
When JP32 on the POS board is OPEN
TM Printer control:
CustomerDisplay control:
Notes:
CustomerDisplay control cannot be guaranteed with XON/XOFF.
Windows Settings
The recommended setting for the Windows FIFO buffer is disabled. This prevents timing delays
caused by the data being held in the buffer. If customers want the setting to be enabled, the
manufacturer recommends that the transmission buffer size be less than 16 bytes.
Device Settings When Software Requires XON/XOFF Handshaking with Jumper
JP32 Open
To set XON/XOFF handshaking, check that the IR-320 and TM Printer use the following
settings:
Handshaking for the TM-xxR Printer should be set to XON/XOFF.
Set DIP switch 1-3 of the TM-xxR Printer to ON. (The default setting is OFF.)
Set Jumper JP32 on the POS board to OPEN. (The default setting is SHORTED.)
The recommended setting for the Windows FIFO buffer is disabled. This prevents timing
delays caused by the data being held in the buffer. If customers want the setting to be
enabled, the manufacturer recommends that the transmission buffer size be less than 16
bytes.
The Customer Display is still controlled by hardware handshaking (DTR/DSR).
Notes:
You cannot use RTS/CTS handshaking to control the TM printer.
The Customer Display is set to DTR/DSR to keep it from going BUSY.
Appendix C-2 Serial Handshaking
Either DTR/DSR or XON/XOFF
RTS/CTS
CustomerDisplay control cannot be guaranteed with XON/XOFF.
Either XON/XOFF or RTS/CTS
DTR/DSR
Rev. C
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