Siemens SIMATIC S5 CP 523 Manual page 50

CP 523
5 Address Assignment
This section describes
• how to set the module address ( 5.1)
• when the CP accepts data from the CPU ( 5.2)
• when the CP supplies current data for the CPU ( 5.2)
5.1 Setting the Start Address and the I/O Area
The CP incorporates an eight-byte transfer memory. All data between the CPU and the CP is
exchanged via this area, which can be read and written to by the CPU. You must set the following
with the DIP switches on the S1 switch bank:
• The desired start address with switches S1.1 to S1.5
• The desired I/O area with switches S1.6 to S1.8
Jumper header
Note:
The modules are factory-set to start address 128 set in the P (normal I/O) area. Make sure before
startup that there are not several modules reserving the same address space.
The byte and word numbers specified in this manual always refer to the start address that you
have set:
Example: You have set start address 128 using DIP switches S1.1 to S1.5
Word 0 has address 128 + 0 = 128, word 6 address 128 + 6 = 134.
EWA 4NEB 811 6044-02a
Figure 5-1. Address Switch Locations
Address Assignment
Jumper X7: closed
Jumper X9: open
Jumper X8: open
Jumper X6: closed
(beginning revision level 2)
1
8
Switch bank S1
OFF ON
for
address setting
5-1