Siemens SIMATIC NET S7-300 User Manual

7 Programming FCs (Functions) and FBs for S7 Ethernet CPs
A-251
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Substitute values if a problem occurs (only when operating as PROFINET IO
controller)
If there is a fault (device/submodule failed), you can find out which submodules
have failed by querying the status information IOCS / IOPS status. You then have
the option of setting substitute values.
7.8.6 FB 52 PNIO_RW_REC
FB52 is used both for the “read data record” and the “write data record” function in
PROFINET IO controller mode. FB52 can only execute one of the functions at any
one time. The “read data record” or “write data record” function is controlled by the
WRITE_REC parameter.
Example: The CP can be informed of the location ID and plant designation using
the “write data record” function. This is done using the maintenance data record
“IM1” with index AFF1
H
.
You will find details of the supported data records and their structure at the
following Internet address:
http://support.automation.siemens.com/WW/view/en/19289930
Call Interface
Call interface in FBD representation:
CPLADDR
PNIO_RW_REC
ERROR
STATUS
WORD
WORD
BOOL
DONE
BOOL
INDEX
WORD
RECORD
INT LEN
ANY
WRITE_REC
BOOL
ID
WORD

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)