Siemens SIMATIC S7-200 System Manual page 423

EM 221 Digital Input 8 x 24 VDC
(6ES7 221- -1BF22- -0XA0)
1M
2M .4
EM 221 Digital Input 8 x AC 120//230 V
(6ES7 221- -1EF22- -0XA0)
0N 0N .0 1N 1N .1 2N 2N .2
4N .4 5N 5N .5
EM 222 Digital Output 8 x 24 VDC
(6ES7 222- -1BF22- -0XA0)
1M 1L+ .0 .1 .2 .3
2M 2L+ .4 .5 .6 .7
Figure A-10 Wiring Diagrams for EM 221 and EM 222 Expansion Modules
.0 .1 .2 .3
.5 .6 .7
3N 3N .3
6N 6N .6 7N 7N .7
EM 222 Digital Output 8 x Relays
(6ES7 222 1HF22- -0XA0)
N(- -)
L(+)
M L+
(+)
24 VDC Coil
N
power
Technical Specifications
EM 221 Digital Input 16 x 24 VDC (6ES7 221- -1BH22- -0XA0)
1M .0 .1
3M .0 .1
EM 222 Digital Output 8 x AC 120/230 V
(6ES7 222- -1EF22- -0AX0)
N
L1
0L 0L .0 1L 1L
4L .4 5L
EM 222 Digital Output 4 x 24 VDC- -5A
(6ES7 222- -1BD22- -0XA0)
1L .0 .1 .2 .3
2L .4 .5 .6 .7
L
(- -)
Appendix A
.6
.2 .3 2M .4 .5 .7
.2 .3 4M .4 .5 .6 .7
.1 2L 2L .2 3L 3L .3
5L .5 6L 6L .6 7L 7L .7
0M 0L+ .0 1M 1L+ .1
2M 2L+ .2 3M 3L+ .3
409