Siemens SIMATIC NET S7-300 User Manual

7 Programming FCs (Functions) and FBs for S7 Ethernet CPs
A-198
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Parameter RemarksPossible
Values
TypeDeclaratio
n
LEN INPUT INT On ISO
Transport and
ISO-on-TCP /
TCP:
1 2 t 32767
Number of bytes to be sent from the data area
with this job. The possible values range from 1
to length specified for the SEND parameter.
 Note the block type:
1,2, to 32767
(or up to “length
specified for
SEND
parameter”)
On UDP:
1,2,...2048 (or
- S7-300
With older versions of FC AG_SEND
(up to V3.0), the data area is always
restricted to a maximum of 240 bytes.
The current versions allow up to 8192
bytes (2048 bytes for UDP).
1
,
2
,...
2048 (or
up to “length
specified for
SEND
parameter”)
- S7-400
With FC AG_SEND, the data area is
restricted to a maximum of 240 bytes.
 Note on the S7-400:
Data transfer may be restricted to
LEN<=240 bytes with older versions of the
CP firmware!
For further information, see /2/
 Improved performance with shorter data
records:
Transfer of data records up to 240 bytes
results in better performance regardless of
the block type used.
DONE OUTPUT BOOL 0: Job active
1: done
This parameter indicates whether or not the job
was completed without errors.
As long as DONE = 0, no further job can be
triggered. DONE is set to 0 by the CP when it
accepts a new job.
For the meaning of this parameter in
conjunction with the ERROR and STATUS
parameters, refer to the following table.
ERROR OUTPUT BOOL 0: -
1: error
For the meaning of this parameter in
conjunction with the DONE and STATUS
parameters, refer to the following table.
STATUS OUTPUT WORD see following
table
Status code
The following table shows the condition codes
formed by the DONE and ERROR parameters.
Condition Codes
The following table shows the condition codes formed by the DONE, ERROR and
STATUS parameters that must be evaluated by the user program.
FC5 AG_SEND / FC50 AG_LSEND - continued

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)