Siemens SIMATIC ET 200AL System Manual page 275

PROFIenergy
7.2 Behavior of the digital input module
7.2 Behavior of the digital input module
Display
The channel status LEDs are directly influenced by the signal level at the socket.
If the encoder supply is switched off, this causes the channel status LEDs to also switch off.
Response to error detection
All channels that are in pause mode on "PE_MODE_PROCEED" report their diagnostic
status as in productive mode.
The following applies for all channels which switch to a different pause mode:
● Encoder supply switch-off upon the start of "pause" does not result in the "Short-circuit"
alarms.
● During the "pause", error detection of "Short circuit" is not possible:
– Alarms for errors already pending before the "pause" are retained.
– After the "pause" is over, the error status is updated and incoming/outgoing errors are
Mode parameter
The following table shows the "Mode" parameter.
Table 7- 1
Element
Mode
As there is only one encoder supply U
1
"pause" if no channel is configured in PE_MODE_PROCEED.
24
reported correspondingly.
Mode parameter
Code
0 : PE_MODE_PROCEED
D
1 : PE_MODE_SHUTDOWN
D
3 : PE_MODE_LAST_VALUE
D
4 : PE_MODE_SUBST_VALUE
D
Explanation
Proceed at "pause"
Value status "GOOD"
•
Switch off at "pause"
Encoder supply U
•
Pause substitute value: 0
•
Value status "BAD"
•
Last value at "pause"
Encoder supply U
•
Pause substitute value: Last input value
•
Value status "BAD"
•
Substitute value at "pause"
Encoder supply U
•
Pause substitute value: Configured pause substi-
•
tute value
Value status "BAD"
•
for all channels, the supply can only be switched off at
S
Digital input module DI 8x24VDC 4xM12 (6ES7141-5AF00-0BA0)
switched off
1
S
B
switched off
1
S
switched off
1
S
Manual, 02/2016, A5E36680963-AA