Festo CPX-4AE-4AA-H, Operating Instructions Manual

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Festo — CPX-4AE-4AA-H — 2021-06b
Commissioning
31
Channel parameter: monitoring of channel 0 … 3
Allocation
–
Bit 0: monitoring of lower critical limit
–
Bit 1: monitoring of upper critical limit
–
Bit 2: monitoring of wire break (idling)
–
Bit 3: monitoring of overflow/underflow
–
Bit 4 … 6: reserved
–
Bit 7: monitoring of parameterisation errors
Values
–
Bit 0 … 3:
–
0 = inactive (default)
–
1 = active
–
Bit 7:
–
0 = inactive
–
1 = active (default)
Tab. 19: Description of “Monitoring of channel 0 … 3"
Channel parameter: lower critical limit of channel 0 … 3
Function number 4828 + m* 64 + 11 (channel 0, low byte) 4828 + m* 64 + 12 (channel 0, high
byte)
4828 + m* 64 + 13 (channel 1, low byte) 4828 + m* 64 + 14 (channel 1, high
byte)
4828 + m* 64 + 15 (channel 2, low byte) 4828 + m* 64 + 16 (channel 2, high
byte)
4828 + m* 64 + 17 (channel 3, low byte) 4828 + m* 64 + 18 (channel 3, high
byte)
m = module number (0 … 47)
Description Setting of the lower critical limit for the individual channels of the analogue
input module
è 7.6 Scaling the range of values.
–
The lower critical limit must be smaller than the upper critical limit.
–
The permissible values depend on the set data format è Tab. 18 Description
of the “Data format, monitoring according to NAMUR NE43” module param-
eter.
–
With data format “linear scaling,” the critical limits have the function of
scaling end values.
Prerequisites for the monitoring of channel-specific parameterisation:
–
The “Monitoring of parameterisation errors” module parameter is active
è Further information.
–
The “Monitoring of parameterisation errors” channel parameter is active
è
Tab. 19 Description of “Monitoring of channel 0 … 3".
Active monitoring has the following effect:
–
Invalid values are not assumed. The last valid value is retained.