Digital Modules
4-26 S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts
•Hardware interrupt
•Diagnostic Interrupt
Parameters can be
assigned
Parameters can be
assigned
Diagnostic functions
•Monitoring of the power
supply voltage of the
electronics
Yes
•Load voltage monitor Green LED per group
•Group error display
– For internal fault
– For external fault
Red LED (INTF)
Red LED (EXTF)
•Channel error display (F) None
•Diagnostic information can
be displayed Yes
Monitoring for
•Wire break I < 1 mA
Substitute value can be applied Yes
Sensor Power Supply Outputs
Number of outputs 2
Output voltage
•with load Min. L+(–2.5 V)
Output current
•Rated value
•Permitted range
120 mA
0 to 150 mA
Additional (redundant) supply Possible
Short-circuit protection Yes, electronic
Data for Selecting a Sensor
Input voltage
•Rated value
•For signal “1”
•For signal “0”
24 VDC
11 V to 30 V
-30 V to 5 V
Input current
•At signal “1”
•At signal “0”
6 mA to 12 mA
< 6 mA
Input characteristic curve To IEC 61131;
type 2
Connection of two-wire BEROs
•Permitted bias current
Possible
Max. 3 mA
Time, Frequency
Internal preparation time for
•Only hardware interrupt
enable
– Input delay the same
for both channel
groups
Max. 70 s
– Input delay not the
same for both channel
groups
Max. 120 s
•Enable hardware and
diagnostic interrupts Max. 5 ms
Input delay
•Parameters can be
assigned Yes
•Rated value 0.1/0.5/3 ms
•Input frequency
(with a time delay of
0.1 ms)
< 2 kHz
Both values go into cycle and response times.
Sensor Circuit
Resistance circuit of the sensor
for wire break monitoring 10 to 18 kΩ