Structure Of The S5 Memory Area After Fct = Wo, Ro Or Ri - Siemens SIMATIC S5 Manual
Distributed i/o system
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IM 308-C – addressing, diagnostics and use of the FB IM308C
S5 memory area
with WO, RO, RI
S5 memory area
with CS
9-30
This table shows how the S5 memory area is structured subsequent to
FCT = WO, RO or RI:
Table 9-16 Structure of the S5 memory area after FCT = WO, RO or RI
DB/DX
M/S
DL n
Byte n
DR n
Byte (n + 1)
DL (n + 1)
Byte (n + 2)
DR (n + 1)
Byte (n + 3)
...
...
DL (n + 121)
Byte (n + 242)
DR (n + 121)
Byte (n + 243)
This table shows how the S5 memory area must be structured for FCT = CS
(change station number):
Table 9-17 Structure of the S5 memory area for FCT = CS
DB/DX
M/S
DL n
Byte n
DR n
Byte (n + 1)
DL (n + 1)
Byte (n + 2)
DR (n + 1)
Byte (n + 3)
DL (n + 2)
Byte (n + 4)
DR (n + 2)
Byte (n + 5)
...
...
DL (n + 121)
Byte (n + 242)
DR (n + 121)
Byte (n + 243)
1
This parameter indicates whether the station number can be changed again at a
subsequent time. If you select FF
the DP slave is removed from the system in the interim.
Content
Input/output byte 0
Input/output byte 1
Input/output byte 2
Input/output byte 3
...
Input/output byte 242
Input/output byte 243
Content
New station number
free
free
00
: Permit station number change
H
User-specific data (byte 0)
User-specific data (byte 1)
User-specific data (byte 238)
User-specific data (byte 239)
, the station number cannot be changed again unless
H
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
1
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