MT3401E.doc rev.0 21/05/13 Pagina 19 di 86
2.1.1) STG/8REL relay expansion board
The STG/8REL 8-relay expansion board converts STG/OUT16-S O/C outputs into voltage free
changeover contact. Up to two relay boards can be connected to each output module. A relay
board is directly connected to the output module (J1 connector) and a second relay board is
connected to the first.
Esempio collegamento
/ Connection example
Fig. 2.4.1) Relay board connection to the output module
2.1.2) STG/IN8-S and STG/OUT16-S module addressing
STG/IN8-S and STG/OUT16-S modules are addressed using the two rotary switches in
RSW 1 and 2 hexadecimals. Rotary switches permit hexadecimal settings (base 16).
Each switch as 16 positions (0-F) and the pointer is positioned on the number chosen
using a screwdriver to create a decimal value between 1 and 255 (see table 1).
For the maximum number of modules, see the table at chapter. 1- Introduction.
Each module must have univocal address in the system. Dual addresses are not
permitted even if modules are on different serial buses.
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