Siemens SIMATIC S5 User Manual

S5-115F Manual Configuring with COM 115F
where
r
max. value
= Relative deviation referred to the maximum value
r
min. value
= Relative deviation referred to the minimum value
r
mean value
= Relative deviation referred to the mean value
A = Read value in subunit A
B = Read value in subunit B
Example:
The read value of the signal in subunit A is 100 units and, in subunit B, 70 units.
Therefore:
r
max. value
=
A - B
A
=
100 - 70
100
ˆ= 30 %
r
min. value
=
A - B
B
=
100 - 70
70
ˆ= 42.9 %
r
mean value
=
A - B
(A+B)
=
100 - 70
(100+70)
ˆ= 35.3 %
• Valid value
Enter here how the unit value is to be generated from the values read into subunit A and B.
Note
If you have initialized software wire-break detection in FB 250 ANEI ( 6.1.3), you
must enter ”1” here.
• CH DQ byte/Half-byte (H/L): This assignment defines four bits for switching the analog input
module between sensor and check output module.
• Lower/Upper check value: Enter the lower and upper check values from the raw value range
of your analog signal here. The check values must be between 0 and 1535 ( Vol. 1, 10.11.4 of
the Manual).
Note
The check values have safety characteristics. You must check the configured values
against a printout generated with COM 115F DOCUMENT.
EWA 4NEB 811 6149-02 1-47

Siemens SIMATIC S5 Specifications

General

Product type designation	SIMATIC S5
Programming language	STEP 5
Digital inputs	Varies by model
Digital outputs	Varies by model
Analog inputs	Varies by model
Analog outputs	Varies by model
Supply voltage	24V DC
CPU Type	Varies by model
Memory	Varies by model
Digital I/O	Varies by model
Analog I/O	Varies by model
Communication	PROFIBUS
Operating Temperature	0°C to 60°C
Relative Humidity	5% to 95% (non-condensing)