Siebert SX202 Série Manuel D'utilisation page 34

Interface
The units must be parameterized before they can be controlled. Parameterization is
done in a menu (see 'Parameterization').
The interface has the following formats, depending on the unit version:
SX202-xx/xx/0x-001/0B-xx: RS485 and RS232
SX202-xx/xx/0x-001/0B-xx: TTY 20mA and RS232
Select in menu item 1 between the formats which are available in the unit.
In interface format RS485, you can select several settings in the menu item 1.
'Project planning information' describes which setting has to be selected.
Units with TTY interface supply terminal P with an auxiliary voltage galvanically iso-
lated from the power supply, for an active connection of the current loop (24 V ± 20%,
max. 50 mA, reference potential = COM).
Project planning information
This project planning information applies to the interface format RS485.
In interface format RS485, you can select settings 485, 4-4 and 4-2 in the menu
item 1. The selected setting depends on whether the protocol reply is to be sent by
the display:
34 BAL SX202 SER M 1.0