To support bidirectional communication, the following conditions must be met:
When connected with parallel cables
The computer must support bidirectional communication.
The interface cable must support bidirectional communication.
The machine must be connected to the computer using the standard parallel cables and parallel connectors.
When connected with the network
The Standard TCP/IP port must be used.
The TCP/IP protocol or the IPP protocol is used. (When using the IPP protocol, the IPP port name must include the IP address.)
When connected with USB
The machine must be connected to the computer's USB port using the USB interface cable.
The computer must support bidirectional communication.
[Enable bidirectional support] must be selected, and [Enable printer pooling] must not be selected on the [Ports] tab with the printer driver.
The PCL 6 and PostScript 3 printer drivers support bidirectional communication and automatic machine status updates.
To obtain machine information automatically using the bidirectional communication function of the PCL 6 or PostScript 3 printer driver, you must select the [Automatically Update Printer Information] check box on the [Accessories] tab in the printer driver's properties window.
The PCL 5e printer driver supports bidirectional communication. You can update the machine status manually.