Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Testing functions, Diagnostics and Fault Elimination
S7-300 Programmable Controller Hardware and Installation
10-8 A5E00105492-01
Status and error displays of all CPUs
Table 10-2 Status and error displays
LED Description
SF 5 VDC FRCE RUN
mode
STOP
LED
off
LED
off
LED
off
LED off LED off CPU power supply missing.
Remedy:
Check whether the power supply module is connected to
mains and switched on.
Check whether the CPU is connected to the power supply
module and switched on.
LED
off
On X (see
the
descri
ption)
LED off On The CPU is in STOP mode.
Remedy: Start the CPU.
On On X LED off On The CPU is in STOP mode as a result of error.
Remedy: refer to the tables below, evaluate the SF LED
X On X LED off Flashes
(0.5 Hz)
The CPU requests memory reset.
X On X LED off Flashes
(2 Hz)
The CPU executes memory reset.
X On X Flashes
(2 Hz)
On The CPU is in Startup mode.
X On X Flashes
(0.5 Hz)
On The CPU was halted by a programmed break point.
For details refer to the Programming Manual Programming
with STEP 7 .
On On X X X Hardware or software error
Remedy: refer to the tables below, evaluate the SF LED
X X On X X You have activated the Force function
For details refer to the Programming Manual Programming
with STEP 7 .
Description of status X:
This status is irrelevant for the current CPU function.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)