Fujitsu PRN607-S manual Serial Input/Output

MAN607-S

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r. Burn strobe light

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Settings will be effective upon turn off and on.

2.6Serial Input/Output

If BUSY control is selected:

When 236 bytes of data have been stored in the input buffer, the SBUSY signal becomes high to request that the computer temporarily stop sending data. When the amount of data stored in the input buffer becomes 235 bytes or less, the SBUSY signal changes to low to request that the host device continue data transfer. Up to 16 bytes of input data are guaranteed after the SBUSY signal has become high. When an error occurs, the SBUSY signal becomes high. Data input is prohibited until the error is cancelled.

If Xon/Xoff control is selected:

When 188 bytes of data has been stored in the input buffer, Xoff (1316) is output through the TxD terminal to request that the host device temporarily stops sending data. When the amount of data stored in the input buffer becomes 124 bytes or less, Xon (1116) is output to request that the computer continues data transfer. Up to 64 bytes of the input data are guaranteed after

Xoff has been output. When an error occurs, the Xoff signal is output to prohibit the data input.

When the error is cancelled, Xon is output.

2.6.1 Serial data transfer

The PRN607-S transfers various data other than the Xon and Xoff codes which are output when controlling Xon and Xoff.

Regardless of whether the input mode is serial or parallel, the following data is transferred through the TxD terminal.

(a) Error codes when a hardware error occurs at initialisation

28-03-2003 Page 2-11 of 53