Loma IQ2 Service Manual page 48

Configuration and Set up Information
Most printers have a parallel interface as standard, which is not compatible, the
chosen printer must have an optional RS232 serial interface supporting
hardware handshaking fitted.
RS422 for devices no more than 1000 metres (1093 yards) from the
detector.
The link is a 4 wire system supporting software handshaking.
This link cannot support LomaNet.
If the link is to be used with a remote printer that can be sited in an office the
need for extra protection against a hostile environment is removed.
The link will only support simple dot matrix type printers such as the Epson LX
range, but can be used with single sheet feeder attachments.
As most printers have a parallel interface as standard, which is not compatible,
the chosen printer must have an optional RS422 serial interface supporting
software handshaking fitted.
20mA current loop
The link is a 4 wire system supporting software handshaking. The board has
user configurable links LK1 & 2 depending upon whether the detector is to be
the active or passive device, the recommended setting is to make the detector
"active" and the device "passive".
This link cannot support LomaNet.
If the link is to be used with a remote printer that can be sited in an office the
need for extra protection against a hostile environment is removed.
The link will only support simple dot matrix type printers such as the Epson LX
range, but can be used with single sheet feeder attachments.
As most printers have a parallel interface as standard, which is not compatible,
the chosen printer must have an optional 20mA serial interface supporting
software handshaking fitted.
Module 7026 5-26