Siemens SIMATIC NET S7-300 User Manual

7 Programming FCs (Functions) and FBs for S7 Ethernet CPs
A-197
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Note
In principle, it is possible to call the FC more than once within the CPU cycle to
speed up the handling of the job. Do not forget, however, that this increases the
load during the CPU cycle (the load differs depending on the CPU type)!
Explanation of the Formal Parameters
The following table explains all the formal parameters for the AG_SEND
/AG_LSEND functions.
Parameter Declaratio
n
Type Possible
Values
Remarks
ACT INPUT BOOL 0,1 If an FC is called with ACT=1, LEN bytes are
sent from the ISO transport data area specified
with the SEND parameter.
If an FC is called with ACT = 0, the status
codes DONE, ERROR and STATUS are
updated.
ID INPUT INT 1,2...64
(S7-400)
1,2...16
(S7-300)
The connection number of the connection is
specified in the parameter ID. (See
Configuration Section 5.3.1)
LADDR INPUT WORD Module base address
When you configure the CP with STEP 7
hardware configuration, the module base
address is displayed in the configuration table.
Specify this address here.
SEND INPUT ANY Specifies the address and length.
The address of the data area refers to one of
the following:
- Bit memory
- Data block area
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)