Siemens SIMATIC S7-1500 System Manual page 24

Application planning
3.1 Hardware configuration
Applicable modules
The following table shows which modules may be used in the various slots:
Table 3- 1
Module type
Load current supply (PM)
System power supply (PS)
CPU
Analog and digital I/O modules
Communications modules
•
•
Technology modules
No connection to the backplane bus
1
24
Assignment of slot numbers
1
Point-to-point
PROFINET/Ethernet, PROFIBUS
When a CPU 1511-1 PN is used
When a CPU 1513-1 PN is used
When a CPU 1515-2 PN is used
When a CPU 1516-3 PN is used
When a CPU 1517-3 PN/DP is used
When a CPU 1518-4 PN/DP is used
Permissible slots Maximum number of modules
0 Unlimited / only 1 PM can be
configured in STEP 7
0; 2 - 31 3
1 1
2 - 31 30
2 - 31 30
2 - 31 4
2 - 31 6
2 - 31 6
2 - 31 8
2 - 31 8
2 - 31 8
2 - 31 30
System Manual, 12/2014, A5E03461182-AC
Automation system