3.1 Mounting and Connections
387
7SA522 Manual
C53000-G1176-C155-3
3.1.2.4 Interface Modules
Exchanging Inter-
face Modules
The interface modules are located on the C-CPU-1 board. Figure 3-8 shows the PCB
with the arranged modules.
Figure 3-8 C-CPU-1 board with interface modules
Please note the following:
• The interface modules can only be exchanged in devices in flush-mounted housing.
Interface modules for devices with surface mounting housing must be retrofitted in
our manufacturing centre.
• Use only interface modules that can be ordered ex-factory via the ordering code
(see also Appendix, Section A.1).
• You may have to ensure the termination of the interfaces featuring bus capability
according to the margin heading “RS485 Interface”.
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