SIMATIC S7-1500
DIGITAL IN-/OUTPUT MODULE, DI16x 24VDC BA,
16 CHANNELS IN GROUPS OF 16,
INPUT DELAY TYP. 3.2MS; INPUT TYPE 3 (IEC 61131), DQ 16X24VDC/0.5A BA;
16 CHANNELS  IN GROUPS OF 8;
4A PER GROUP