Siemens S7-300 - Interface Modules - Overview

&RQILJXULQJ
S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
A5E00203919-01
5-9
 $UUDQJLQJ0RGXOHVRQ0XOWLSOH5DFNV
([FHSWLRQV
With the CPU 312 IFM and the CPU 313, only one row is permitted on a rack.
8VLQJLQWHUIDFHPRGXOHV
If you are planning a structure distributed between multiple racks then you will
need interface modules (IM). An interface module routes the backplane bus of an
S7-300 to the next rack.
The CPU is always located on rack 0.
Table 5-4 Interface modules - Overview
&KDUDFWHULVWLFV 7ZRRUPRUHURZV /RZFRVWURZFRQILJXUDWLRQ
Send IM in rack 0 IM 360
Order No.: 6ES7 360-3AA01-0AA0
IM 365
Order No.: 6ES7 365-0AB00-0AA0
Receive IM in rack 1 to 3 IM 361
Order No.: 6ES7 361-3CA01-0AA0
IM 365 (hardwired to send IM 365)
Maximum number of
expansion modules
3 1
Length of the connecting
cables
1 m (6ES7 368-3BB01-0AA0)
2.5 m (6ES7 368-3BC51-0AA0)
5 m (6ES7 368-3BF01-0AA0)
10 m (6ES7 368-3CB01-0AA0)
1 m (hardwired)
Remarks - Rack 1 can only receive signal
modules; the total current
consumption is limited to 1.2 A (for
the 312 IFM: 0.8 A), whereby the
maximum for rack 1 is 0.8 A.
These restrictions do not apply to
operation with interface modules
IM 360/IM 361