Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-71
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
M
L+
Backplane
bus
DAC
R
L
Q
I
M
ANA
M
internal
L+
M
Ground bus
CPU
Logic
Figure 4-31 Connecting Loads to a Current Output of a Non-Isolated AO
4.16 Diagnostics of the Analog Modules
Programmable and Non-Programmable Diagnostic Messages
In diagnostics, we make a distinction between programmable and
non-programmable diagnostic messages.
You obtain programmable diagnostic messages only if you have enabled
diagnostics by parameter assignment. You perform parameter assignment in the
“Diagnostics” parameter field in STEP 7 (refer to Section 4.7).
Non-programmable diagnostic messages are always made available by the analog
module irrespective of diagnostics being enabled.
Actions following diagnostic message in STEP 7
Each diagnostic message leads to the following actions:
• The diagnostic message is entered in the diagnosis of the analog module and
forwarded to the CPU.
• The error LED on the analog module lights.
• If you have programmed “Enable Diagnostic Interrupt” with STEP 7, a
diagnostic interrupt is triggered and OB 82 is called (refer to Section 4.17).

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)