
ADOS S.R.L. Buccinasco (MI)
492-MTU10006
Rev. 4
Page 15 of 49
3.11 SERIAL INTERFACE MANAGEMENT
3.11.1
Primary serial interface
The primary serial line is available in both the RS232 and RS485 mode.
The factory configuration is RS232 (see Figure 1).
1
RS485
2
3
RS232
JP2 JP1
JP1 e JP2 closed in position 1-2
RS485 mode
JP1 e JP2 closed in position 2-3
RS232 mode
If the instrument is used in the RS485 modality, an integrated circuit MAX483E must be mounted in the
socket U4 (see Figure 1).
The primary serial line can be configured in one of the following operating modes:
?
Off
?
Continuous transmission
?
Bi-directional (eventually with address for 485)
?
Print On request from keyboard command or external button
The transmission parameters of the primary and auxiliary line are :
?
8 bit - No Parity - 1 Stop
The primary line speed can be configured as follows:
?
9600
?
4800
?
2400
?
1200
3.11.2
RS485 interface
The instrument can control an RS485 line as an alternative to the main line RS232.
The physical interface is on two balanced wires.
The logic protocol is half duplex master/slave and the instrument responds as a slave.
?
?
?
?
?
?