Festo CPX-AB Series Electronic Manual page 179

5. Analogue output module CPX−2AA−U−I
Channel parameters: Lower limit channel x / Upper limit channel x
Function no. Lower limits:
4828 + m * 64 + 9 (channel 0, low byte)
4828 + m * 64 + 10 (channel 0, high byte)
4828 + m * 64 + 11 (channel 1, low byte)
4828 + m * 64 + 12 (channel 1, high byte)
Upper limits:
4828 + m * 64 + 13 (channel 0, low byte)
4828 + m * 64 + 14 (channel 0, high byte)
4828 + m * 64 + 15 (channel 1, low byte)
4828 + m * 64 + 16 (channel 1, high byte)
Description A lower limit can be set for the individual channels of the analogue output
modules (see section 5.4.5).
Bit Bit 0...7: high byte or low byte of the limit value
Values Presettings:
Low byte:
High byte: 0...15
Remark The output signals which are output are always limited to the parametrized
values.
If the output value is less than the parametrized lower limit or exceeds the
parametrized upper limit, an appropriate fault is displayed (providing the
relevant channel parameter Monitoring channel x monitoring lower limit" or
Monitoring channel x monitoring upper limit" is active).
The upper limit must always be greater than the lower limit.
Modifications to the limits must be made in steps of 16 bits.
Permitted limits:
The limits are checked for validity during parametrizing. Invalid parametrizings
are not accepted the module uses the previous (last valid) parametrizings.
The permitted values depend on the parametrized data format (see section
5.4.5). If the module parameter Monitoring parametrizing faults" as well as the
relevant channel parameter Monitoring parametrizing faults" is set to active",
the relevant fault will be displayed.
Tab. 5/15: Lower and upper limits channel x
Festo P.BE−CPX−AX−EN en 0503b
Lower limit = 0 (low byte = 0; high byte: 0)
Upper limit = 4095 (low byte = 255; high byte: 15)
0...255
m = module number (0 ... 47)
5−23