ADOS S.R.L. Buccinasco (MI)
417-MTA200I1
Rev. 9
Page 51 of 77
3.3.6 Primary serial port connection
The primary transmission line can be used in the R232 or RS485 mode (refer to section
“CONFIGURATION” for the operating modalities).
Connections must be done with a shielded cable (RS232 lines) or with a twisted pair (RS 485 lines).
In the RS485 modality, put a 50
Ω
resistor in parallel (where necessary) to the signal of the unit that
is farthest from the HOST to correct for possible signal reflections.
TERMINAL
BOARD
PIN
FUNCTIONS
M3
1
TX232 - 1
M3 3
RX232
M3 4
CTS232
M3 5
SGROUND
M3 6
M3 7
RTX485-
M3 8
SGROUND
3.3.7 Auxiliary serial port connection
The auxiliary transmission line can be used in the R232 mode (refer to section
“CONFIGURATION” for the operating modalities).
The auxiliary line is used for connection to a repeater or for any interfacing to a printer.
Complete the connections with a shielded cable or with a twisted pair.
TERMINAL
BOARD
PIN
FUNCTIONS
M3
2
TX232 - AUX
M3 8
SGROUND