How do I switch paper bins on a LaserWriter Pro in HP emulation mode?

If you want to switch paper bins on a LaserWriter Pro in HP emulation mode, you must send an escape code sequence directly to the printer. One way to do this is to type the escape code sequence into to a text file. This is the HPCL escape code sequence to switch between paper bins:

ESC&l#H

where # is the bin selection value and the letter after the "&" is lowercase L.

0 is the bin selection value for the default paper tray.

1 " " for the upper tray.

2 " "for the manual feed tray.

4 " "for the lower tray.

6 " "for the envelope feeder.

For instance, to select the 500 page cassette (or lower tray), send "ESC&l4H" to the printer.

Frequency

Some telephone systems use guard tones to allow proper data transfer over the network. Guard tones are not used in the United States. The modem does not recognize the value of 1 (550Hz guard tone) and returns ERROR.

&G0 Disables guard tone (default in the United States).

&G1 Sends 1800 Hz guard tone (default outside of the United States).

&G2 Same as &G1.

&Kn Local flow control

This command specifies which kind of local flow control is used between the communications application and the Express Modem software. Since flow control mechanisms are built in, this command has no effect and remains for scripting compatibility. Flow control characters generated by the communications application are always passed to the line. See the section "Flow Control" in this chapter. The &K command setting will not be stored or displayed in the profile. &K0*&K5 respond OK, and no action is taken. Other values generate ERROR.

&Ln Switched / leased line

This command affects the modem's behavior during the call-setup and the carrier-handshake phases at the beginning of a connection.

&L0 Selects switched (dial-up) line. All timeouts are active according to the definition of the handshake protocols. Default.

&L1 Selects leased line. All timeouts are ignored during the handshake process. Calling and answer tones are not exchanged while executing D and A command (that is, the carrier handshake is started immediately).

&Mn Asynchronous / synchronous operation

This command has no effect and remains for compatibility.

&M0 returns OK; all other values return ERROR. See also &Q.

&Pn Pulse mode make / break ratio

&P0 Make = 39%, break = 61% Default

&P1 Make = 33%, break = 67%

Note: Pulse mode specifications vary from country to country, as set by national regulatory bodies, and are not available for change. Correct settings for each country are made automatically by the Express Modem firmware.

&Qn Connection mode

The &Q command setting has precedence over the \N command setting and registers S36 and S48.

&Q0 Asynchronous mode (no error control, disables V.42 and MNP). Returns OK.

&Q1*4 Synchronous mode (data transparent synchronous mode). Returns ERROR.

&Q5 Error-control mode (enables V.42 and MNP); coupled with the register values set in S36 and S48. Returns OK. Default.

&Q6 Same as Q0. Returns OK.

&Rn CTS / RTS

This command has no effect and remains for compatibility. &R0 and &R1 return OK; all other values return ERROR.

&Sn DSR

This command has no effect and remains for compatibility. Values0, 1, and 2 return OK; all other values return ERROR.

&Tn Self-Tests

The following diagnostic tests are available only when no error protocol is engaged. The duration of each test is controlled by register S18.

&T0 Terminate the self-test; terminates (escapes) a test in progress and returns the modem to command state, if S18 = 0.

&T1 Local analog loopback; initiates a local analog loopback test. The escape sequence must be entered to terminate this test. This mode tests the Express Modem and the host Macintosh computer. The modem responds with the CONNECT message when the loopback connection has been established.

&T3 Local digital loopback; initiates a local digital loopback test. The Express Modem echoes characters back to the remote modem exactly as received.

&T4 Enable remote digital loopback; enables the Express Modem to respond to a remote modem that is attempting to place it in a digital loopback test. If the remote modem places the Express Modem in remote digital loopback mode, the Express Modem echoes characters back to the remote modem exactly as received.

&T5 Disable remote digital loopback; disables the Express Modem from responding to a remote modem that is attempting to place it in the digital loopback mode.

&T6 Initiates remote digital loopback; tests both the Express Modem and the remote modem as well as the telephone circuits. Characters sent to the remote modem are echoed back to the Express Modem exactly as they were received.

&T7 Remote digital loopback with self-test; initiates a remote digital loopback (like &T6) with self-test data pattern generation and error checking.

&T8 Local analog loopback with self-test; initiates a local analog loopback (like &T1) with self-test data pattern generation and error checking. The modem responds with the CONNECT message when the loopback connection has been established. The tests terminate when the host issues an AT&T0 command or the register S18 time delay expires. The self-test data pattern is an internally generated $511 sequence. In the self-test modes, an error counter counts the number of errors and sends the final result to the host at the end of the test. The maximum number of errors that can be counted is 255

Note: &T1 takes an optional, single-character parameter to indicate whether the analog loopback must be done in originate mode (O or o, the default) or answer mode (A or a).

&Un Trellis coding

This command enables and disables Trellis code modulation in V.32.

&U0 Enable Trellis coding. Default.

&U1 Disables Trellis coding.

&V Display profiles

This command displays the active profile, stored profile 0, stored profile 1, and stored telephone numbers (see AT&Z). The MNP settings are not displayed by this command.

&Wn Profile saving

This command saves the current active profile.

&W0 Saves the active profile into profile 0.

&W1 Saves the active profile into profile 1.

&Xn Synchronous clock source

This command, included for compatibility, is ignored and not saved in any profile. It always returns OK.

&Yn Start-up profile

This command sets the profile to be used at start up.

&Y0 Specifies profile 0 as the start-up configuration. Default.

&Y1 Specifies profile 1 as the start-up configuration.

&Zn=s Store telephone number

This command stores the dial string s (a maximum of 64 characters) in location n (equal to 0, 1, or 2). Note that the dial string s is constructed in the same fashion as for the ATD command: it must be the last command on the command line and have no other characters following the dial string. The dial string is not validated before being saved.