
SRP-270
3-5-1(f) S/W Flow Control
When XON/XOFF flow control is selected, the printer transmits XON(ACSII 11h) or XOFF(ASCII 13h) signal through the TXD line. If the Printer is BUSY, the Printer transmits XOFF(ASCII 13h) to host through the TXD line. Then the host recognize that the Printer is BUSY. So, the host does not transmit a data to the Printer. If the Printer is released from BUSY, the Printer transmits XON(ASCII 11h) to host through the TXD line. Then the host recognize that the Printer is not BUSY. And the host transmit a data to the Printer.
※Note : Refer to the Operation Manual about XON/XOFF flow control.
3-5-2 RS-485 Serial Interface
3-5-2(a) Specification
| Item |
| Description | Remark |
| Data Transmission | • Serial |
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| Synchronization | • Asynchronous |
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| HandShaking |
| • H/W : DTR / CTS (Same as DSR) | XON: ASC Code 11h |
| (Flow Control) |
| • S/W : XON / XOFF | XOFF: ASC Code 13h |
| Signal Level |
| • Logic”1” : |
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| • Logic”0” : |
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| Baud Rate | • 19200 / 2400 / 4800 / 9600 Bps |
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| Data Word Length | • 7 Bit / 8 Bit |
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| Parity |
| • None / Even / Odd |
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| Connector | • DB25P Female (I/F PBA) |
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| Table |
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※Note : The HandShaking (Flow Control) / Data Word Length / Baud Rate / Parity functions depend on the DIP Switch settings. Refer to the User’s Manual.
Same as the appearance of
3-5-2(c) Cable Connection
PRINTER |
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Figure 3-8 RS-485 Cable Connection
Rev. 3.02 | - 24 - |