Siemens SIMATIC S5-115U User Manual page 77

Simatic s5 series cpu 941-7ub11 cpu 942-7ub11 cpu 943-7ub11 and cpu 943-7ub21 cpu 944-7ub11 and cpu 944-7ub21
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S5-115U Manual
Possible Configurations on Mounting Rack ER 701-2
Use expansion mounting rack ER 701-2 to install expansion unit EU 2. EU 2 is suitable for
connection to a centrally configured or remote CC 2/CC 3 central controller. The ER 701-2 has slots
for a power supply module (PS), digital and analog input or output modules, one central
controller interface module, and one IM 306 expansion unit interface module. The IM 306 lets you
connect up to three EU 1 expansion units to one EU 2 expansion unit. Interrupt-triggering
modules cannot be used.
Use the IM 310, IM 311, IM 314 and IM 318 interface modules to connect the EU 2 to the S5-135U,
S5-150U and S5-155U programmable controllers.
Mounting Rack
ER 701-2
Slots
Power Supply Module
1
Digital Modules
Analog Modules
2
IM 305/IM 306
AS 310/311/IM 314/317/318
3
ÜBW 313
CP 523
3
Only with adapter casing
1 The 434-7 input module cannot be plugged into these slots; digital modules of ES 902 design (S5-135/155U) can
only be plugged into slot 6
2 Only if an IM 306 is used. Not permissible with the AS 302/311. Analog modules of ES 902 design (S5-135/155U) can
only be plugged into slot 6
3 Not permissible with the AS 302/311
Figure 3-11. Possible Configurations on Mounting Rack ER 701-2
EWA 4NEB 811 6130-02b
PS
0
1
2
Installation Guidelines
3
4
5
6
7
IM
3-11

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