Siemens SIMATIC S7 System Manual page 693

Model
Number of outputs on simultaneously
Cable length (meters)
Table A- 63 Wiring diagrams for the 8-point digital output SMs
SM 1222 DQ 8 x Relay (6ES7 222-1HF30-0XB0)
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
SM1222
DQ 16 x Relay
16
500 m shielded, 150 m unshielded
SM 1222 DQ 8 x 24 VDC (6ES7 222-1BF30-0XB0)
553BTechnical specifications
A.5 Digital signal modules (SMs)
SM1222
DQ 16 x 24 VDC
16
500 m shielded, 150 m unshielded
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