SIMATIC S7-1500 digital input/output module. DI 32x24VDC BA SNK / SRC. 32 channels in groups of 16. input delay typ. 3.2 ms input type 3 (IEC 61131). sinking/sourcing input. DQ 32XDC 24V/0.3A SNK BA 32 channels in groups of 16 2 A per group at 60 C sourcing output 35 mm wide cables and terminal blocks to be ordered separately as accessories