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75
ifm
Device Manual Supplement: Acyclic data records and Command interface (AC14 and AC4S)
2017 / 09
Command channels
>
Command response channel (device >>> fieldbus master)
11128
Offset
Word no.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
reflected user ID
2
reflected command number
3
reserved
Command status
(
4
command error code
5
reserved
reserved
PF1
PF2
SE
EF
PM
PS
6
Voltage ASi+ to ASi- in [mV]
7
Voltage FE to ASi- in [mV]
8
Symmetry (-100...100) in [%]
9 ... 120
The area is completely ignored.
It does not matter whether the data area exists or what data is contained.
Legend:
EF
earth fault
1 bit
0 = no earth fault is detected
1 = asymmetric supply voltage; classified as earth fault
PF1
p
ower
f
ail 22.5 V
1 bit
0 = no AS-i Power Fail (classic APF)
1 = AS-i voltage < 22.5 V
There is an AS-i power fail (classic APF)
PF2
p
ower
f
ail 19 V
1 bit
0 = no AS-i Power Fail (24V APF)
1 = AS-i voltage < 19 V
There is an AS-i power fail (24V APF)
PM
p
ower
m
odule
1 bit
0 = no data decoupling module is connected
1 = a data decoupling module is connected
PS
p
ower
s
ource
1 bit
0 = the device is supplied from AUX
1 = the device is supplied from AS-i
SE
s
tatus
e
arth fault
detection
1 bit
0 = no earth fault detection possible (e.g. no AS-i voltage)
1 = earth fault detection provides valid data
>
Possible command error codes
11101
There are no error messages for this command.