Siemens Simatic S7-300 - Structure of the Module Status

Testing functions, Diagnostics and Fault Elimination
S7-300 Programmable Controller Hardware and Installation
10-26 A5E00105492-01
Module status
Module status returns the status of configured address areas and provides details
on the configuration of module diagnostics. Module status starts with module
diagnostics and consists of a maximum of 13 bytes.
Byte x
Byte x+1
Byte x+2
0
H
0
H
Byte x+3
Status type: Module status
always “0”
always “0”
Byte x+4
7
1.configured address area
6
Byte x+5
70
1
2. configured address area
3. configured address area
4. configured address area
5. configured address area
23456
module ok.;
valid data
module error;
invalid data
(defective module)
wrong module;
invalid data
no module;
invalid data
7
0123
4
5
6
00
Length of module status incl. Byte x (max. 13 Byte)
Code for device-related diagnosis
70
1
23456
00110000
2 = Module status
H
Code for Status message
Byte x+6Byte x+6
Byte y-1
7
7
0
0
1
1
6. configured address area
30. configured address area
7.configured address area
31. configured address area
8.configured address area
32. configured address area
2
2
3
3
4
4
5
5
6
6
00 00
00B:
01B:
10B:
11B:
CPU slot
9.configured address area
0
0
.
.
.
.
.
.
.
.
Figure 10-9 Structure of the module status