Safety Bus Manual — P/N LS10177-000HI-E:B 02/21/2019 22SB-SIM Module System Components3.2.3 ConnectionsThe SB-SIM module features the following connectors:Terminal Block TB1This terminal block supplies power to the module.Terminal Block TB2This terminal block connects the two ring communication links.Terminal Block TB3This terminal block is used to connect channels 1, 2, 3, and 4.Terminal Block TB4This terminal block is used to connect channels 5, 6, 7, and 8.Grounding the ModuleThe module must be connected to the system ground using the screw located on the front panel.Pin Tag Function1 +V 24VDC Power supply positive2 +V 24VDC Power supply positive3 -V 24VDC Power supply negative4 -V 24VDC Power supply negativePin Tag Function1 -LK1 Link-1 Negative2 +LK1 Link-1 Positive3 SLK1 Link-1 Screen4 -LK2 Link-2 Negative5 +LK2 Link-2 Positive6 SLK2 Link-2 ScreenPin Tag Function1 +L1 CH-1 line input positive2 -L1 CH-1 line input negative3 +L2 CH-2 line input positive4 -L2 CH-2 line input negative5 +L3 CH-3 line input positive6 -L3 CH-3 line input negative7 +L4 CH-4 line input positive8 -L4 CH-4 line input negativePin Tag Function1 +L5 CH-5 line input positive2 -L5 CH-5 line input negative3 +L6 CH-6 line input positive4 -L6 CH-6 line input negative5 +L7 CH-7 line input positive6 -L7 CH-7 line input negative7 +L8 CH-8 line input positive8 -L8 CH-8 line input negative