Siemens SIMATIC NET S7-300 User Manual

7 Programming FCs (Functions) and FBs for S7 Ethernet CPs
A-187
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
7.2.3 Status Information (output parameters)
For status evaluation, the following parameters must be evaluated in the user
program:
 DONE or NDR
These parameters (DONE with send jobs and NDR with receive jobs) signal
(successful) completion of the job.
 ERROR
This indicates that the job could not be executed error-free.
 STATUS
This parameter supplies detailed information about the execution of the job.
Status codes can be returned during execution of the job (DONE=0 and
ERROR=0).
Evaluating Status Codes
Remember that the status codes DONE, NDR, ERROR, STATUS are updated at
each block call.
Status Codes during CP Startup
With a complete restart or restart of the Ethernet CP (after activating a switch on
the module), the output parameters of the FC are reset as follows:
 DONE = 0
 NDR = 0
 ERROR = 0
 STATUS = 8180
H
for AG_RECV / AG_LRECV or 8181
H
for AG_SEND
/AG_LSEND

Siemens SIMATIC NET S7-300 Specifications

General

Product Type Designation	SIMATIC NET S7-300
Mounting	DIN rail mounting
Protection Class	IP20
CPU Models	Various models available (e.g., CPU 312, CPU 314)
Communication Interfaces	MPI, PROFIBUS DP
Power Supply	24 V DC power supply required. Different power supply modules available.
I/O Modules	Digital input modules, digital output modules, analog input modules, analog output modules
Programming	STEP 7 software
Supply Voltage	24V DC or 120/230V AC (depending on model)
Digital Inputs	Available via digital input modules
Digital Outputs	Available via digital output modules
Analog Inputs	Available via analog input modules
Analog Outputs	Available via analog output modules
Communication Functions	MPI, PROFIBUS DP, Ethernet (depending on model)
Protocols	MPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature	0°C to 60°C
Storage Temperature	70 °C
Memory	Depends on CPU model (e.g., 32 KB to 1.5 MB)