Siemens Simatic ET 200S Operating Instructions Manual page 238

Interface modules
10.6 Interface module IM151-1 FO STANDARD (6ES7151-1AB02-0AB0)
Pin assignment
The following table shows the terminal assignment of the IM151-1 STANDARD interface
module for the 24 VDC voltage supply and PROFIBUS DP with fiber-optic interface:
Table 10-8
Block diagram
Figure 10-3
10-16
Terminal assignment of the IM151-1 FO STANDARD interface module
View Signal name
1L+
2L+
1M
2M
Block diagram for the IM151-1 FO STANDARD interface module
Designation
24 VDC
24 VDC (for loop through)
Ground
Ground (for loop through)
Operating Instructions, 12/2005, A5E00515771-03
ET 200S