Siemens Simatic S7-400 - Manual (Page 77)

Racks
2-7
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
2.4 The Rack CR2; (6ES7401-2TA01-0AA0)
Introduction
The CR2 rack is used for assembling segmented central racks. The CR2 has both
an I/O bus and a communication bus. The I/O bus is split into two local bus
segments with 10 or 8 slots.
Suitable Modules for the CR2
You can use the following modules in the CR2 rack:
• All S7-400 modules with the exception of receive IMs
Structure of the CR2
465 mm
482.5 mm
290 mm 190 mm
40 mm
1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Segment 1 Segment 2
I/O bus
Segment 1 I/O bus
Segment 2
Communication bus
Figure 2-4 CR2 Rack
Technical Specifications of the CR2 Rack
Rack CR2
Number of single-width slots 18
Dimensions W x H x D (in mm) 482.5 x 290 x 27.5
Weight 3 kg
4.1 as of version 03
Busses Segmented I/O bus,
continuous communication bus
Only one power supply module required