Siemens Simatic S7 Series Manual page 29

Available Expansion.
C P U 221
C P U 222
C P U 224
C P U 224XP
C P U 224XP si
C P U 226
E xpansion M odules
D iscrete Input
D iscrete O utput
D iscrete C om bination
A nalog Input
A nalog O utput
A nalog C om bination
C om m unication M odules
O ther M odules
Most.S7-200.expansion.modules.are.designed.to.provide.
additional.I/O..However,.several.expansion.modules.are.available.
to.support.communication.options,.positioning,.and.weighing.
(SIWAREX.MS).
CPU.22.comes.with.6.discrete.inputs.and.4.discrete.outputs.
and.does.not.accept.expansion.modules.
CPU.222.comes.with.8.discrete.inputs.and.6.discrete.outputs.
and.accepts.up.to.2.expansion.modules.
CPU.224,.CPU.224XP ,.and.CPU.224XPsi.come.with.4.discrete.
inputs.and.0.discrete.outputs.and.accept.up.to.7.expansion.
modules..Note:.The.digital.outputs.for.the.CPU.224XPsi.are.
current.sinking.
CPU.226..comes.with.24.discrete.inputs.and.6.discrete.
outputs.and.accepts.up.to.7.expansion.modules.
6 Inputs, 4 O utputs
N o E xpansion M odules (E M )
8 Inputs, 6 O utputs
E M E M
U p to 2 E xpansion M odules
E M E M E M
E M E M E M
E M E M E M
8 x 24 V D C
4 x 24 V D C
4 x 24 V D C In/4 x 24 V D C out
16 x 24 V D C In/16 x 24 V D C O ut
4 x 24 V D C In/4 x R elay
16 x 24 V D C In/16 x R elay
4 x A nalog
8 x A nalog
2 x A nalog
4 x A nalog In/1x A nalog O ut
M odem
G S M /G P R S M odem
P osition
E M E M E M
E M E M E M
E M E M E M
8 x 120/230 V A C 16 x 24 V D C
8 x 24 V D C 8 x 120/230 V A C
8 x 24 V D C In/8 x 24 V D C O ut
32 x 24 V D C In/32 x 24 V D C O
8 x 24 V D C In/8 x R elay
32 x 24 V D C In/32 x R elay
4 x T herm ocouple 2 x R T D
8 x T herm ocouple 4 x R T D
4 x A nalog
A S -Interface P R O F IB U S -D P
S IW A R E X M S
28
14 Inputs, 10 O utputs
E M
U p to 7 E xpansion M odules
14 Inputs, 10 O utputs
E M
2 A nalog In, 1 A nalog O ut
U p to 7 E xpansion M odules
24 Inputs, 16 O utputs
E M
U p to 7 E xpansion M odules
4 x R elay 8 x R elay
E thernet E thernet IT