Screen "noise" is very little - there is no sequential buffer and there are no effects associated with overflown buffer. Partial line writes can be enabled or disabled with the switch. Enabling partial line writes reduces the traffic while the noise is somewhat increased. The overhead of handling clock and status lines is reduced. Disabling partial writes causes the opposite.
In this mode the extraction of the messages on the emulator end is unreliable and it is not recommended.
In order to deliver messages for the automation please use EPIS 1.x series card in "Message line extraction mode" or "Printer Data transmission mode".