Siemens SIMATIC CPU 410 User Manual

I/O configuration variants
6.7 Connection of two-channel I/O to the PROFIBUS DP interface
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
93
Additional conditions for specific modules
AI 8x12 bit 6ES7 331-7K..02-0AB0
● Use a 50 ohm or 250 ohm resistor to map the current on a voltage:
Resistor
50 ohms
250 ohms
Current measuring range
+/-20 mA
+/-20 mA *)
4...20 mA
Input range to be assigned +/-1 V +/-5 V 1...5 V
Measuring range cube position
"A"
"B"
Resolution
12 bits + sign
12 bits + sign
12 bits
S7 number format
x
x
Circuit-specific measuring error
- 2 parallel inputs
- 1 input
-
-
0.5%
0.25%
"Wire break" diagnostics
-
-
x *)
Load for 4-wire transmitters
50 ohms
250 ohms
Input voltage for 2-wire transmitters
> 1.2 V
> 6 V
*) The AI 8x12bit outputs diagnostic interrupt and measured value "7FFF" in the event of wire break.
The listed measuring error results solely from the interconnection of one or two voltage
inputs with a measure resistance. Allowance has neither been made here for the tolerance
nor for the basic/operational limits of the modules.
The measuring error for one or two inputs shows the difference in the measurement result
depending on whether two inputs or, in case of error, only one input acquires the current of
the transmitter.
AI 8x16 bit 6ES7 331-7NF00-0AB0
● Use a 250 ohm resistor to map the current on a voltage:
Resistor
250 ohms *)
Current measuring range
+/-20 mA
4...20 mA
Input range to be assigned
+/-5 V
1...5 V
Resolution
15 bits + sign
15 bits
S7 number format
x
Circuit-specific measuring error
- 2 parallel inputs
- 1 input
-
-
"Wire break" diagnostics
-
x
Load for 4-wire transmitters
250 ohms
Input voltage for 2-wire transmitters
> 6 V
*) It may be possible to use the freely connectible internal module 250 ohm resistors

Siemens SIMATIC CPU 410 Specifications

General

Brand	Siemens
Model	SIMATIC CPU 410
Category	Control Unit
Language	English