Siemens SIMATIC S7-300 Module data User Manual

Representation of the analog values of analog modules
5.6 Settling and response times of analog output channels
S7-300 Automation System Module data
5-30 Manual, 08/2006, A5E00105505-04
5.6 5.6 Settling and response times of analog output channels
Settling time
The settling time (t
2
to t
3
), i.e. the time expiring until a converted value has gained a specified
level at an analog output, is load-dependent. We therefore distinguish between resistive,
capacitive and inductive load.
For information on settling times as a function of load at the various analog output modules,
refer to the technical data of the relevant module.
Response time
The worst case response time (t
1
to t
3
), i.e. the time expiring between the input of digital
output values to internal memory, and the signal settling time at the analog output, may be
equivalent to the total of cycle time plus settling time.
The worst case scenario is given, when the analog channel has been converted immediately
before a new output value is transferred, and is not converted again until all other channels
have been converted (cycle time.)
Overview of the settling time and response time of analog output modules
W
$
W
=
W
(
W
W

W

t
A
Response time
t
C
tC = cycle time, corresponds to n x conversion time (n = activated channels)
t
S
Settling time
t
1
a new digitized output value is available
t
2
Output value accepted and converted
t
3
the specified job value will be reached

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)