Fig. 2.4) STG/OUT16-S module
2.4.1 STG/8REL relay expansion board
The STG/8REL 8-relay expansion board converts the O/C outputs of the STG/OUT16-S
output module into voltage-free exchange contacts. 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 former.