Siemens Simatic S7-300 CPU 31xC Series User Manual

Debugging functions, diagnostics and troubleshooting
10.7 Diagnostics of DP CPUs
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
10-27
10.7.4 Structure of slave diagnostic data when the CPU is operated as Intelligent Slave
Syntax of the diagnostics datagram for slave diagnostics
Station status 1 to 3
Master PROFIBUS address
Low byte
High byte
Vendor ID
to
Byte x-1
.
.
.
.
.
.
Byte x
to
Byte y-1
.
.
.
Byte y
to
Byte z
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
1
Exception: If the DP master is incorrectly configured,
the DP slave interprets 35 configured address ranges (46H in byte 6).
Interrupt status (module diagnostics)
(The length is dependent on the type of interrupt)
Module status (module diagnostics)
(The length is dependent on the number
of configured address areas)
ID-specific diagnostics
(The length is dependent on the number
of configured address areas of the
intermediate memory
1
)
Figure 10-2 Structure of slave diagnostic data

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)