Acroprint Data Collection Terminal (ADCT) - Manual (Page 16)

16
Local Area Network: RS-485 serial port
The RS-485 serial port is located on the lower left corner of the
terminal. It is a 6 position 4-pin female port which will accept a
male RJ-11 modular connector.
The terminal can use RS-485 2-wire serial communication,
allowing up to 32 terminals to be connected to one host port. An
RS-232 port on the host is typically used in conjunction with an
RS-232/RS-485 converter to complete the connection.
Through software, the host can communicate with individual
terminals even though they are wired in parallel. RS-485 commu-
nication uses a differential bus which provides good protection
from interference over long runs of up to 4000 feet.
NOTE: When wiring a network, always follow the electric wiring
codes in your area. Typically, a teflon coated wire is required for
wiring through the ceiling. The junction box to junction box wire
shown on the opposite page is a teflon jacketed cable.
W W AND AND
RS RS
485 485
RS RS
232 232
9V 9V
Ports and connections