Festo CPX-P-8DE-N Series, Description

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3. Input module CPX-P-8DE-N-...
3-41
Festo P.BE-CPX-P-EA-EN en 1209NH English
Example: At a gate time of 10 ms the upper and lower critical
frequency must be more than 2 x 100 Hz (200 Hz) apart.
Module parameters: Upper limit value (B, C, D) Handheld
This parameter is only available in the extended process image (miniature switch = ON).
Function no. 4828 + m * 64 + 26 (channel 0, low byte) m = module number (0 ... 47)
4828 + m * 64 + 27 (channel 0, high byte)
4828 + m * 64 + 28 (channel 1, low byte)
4828 + m * 64 +
29
(channel 1, high byte)
4828 + m * 64 + 30 (channel 2, low byte)
4828 + m * 64 + 31 (channel 2, high byte)
4828 + m * 64 + 32 (channel 3, low byte)
4828 + m * 64 + 33 (channel 3, high byte)
Description An upper limit value can be specified for each of the channels 0 ... 3 of the input
module.
– Operating mode B: Upon reaching the upper limit value, incremental counters
set the bit assigned to the relevant channel in byte 0 of the PII. Decremental
counters count starting from the upper limit value.
Permissible range of values: -32768 ... 32767.
– Operating mode C, D: If the value exceeds the upper limit value, this is
signaled by setting the corresponding bits in byte 0 of the PII ( Tab. 3/9).
Permissible range of values
Operating mode C: 1 … 1000 Hz for channel 0 …3 (f
max
- 20 %)
Operating mode D: 1 … 10000 Hz for channel 0 (f
max
- 20 %)
Bit Bit 0 ... 7: High byte or low byte of the value
for the respective channel
Values Upper limit value
(presetting channel 0 ... 3 = 1000)
Bit 0 ... 7:
Low byte (presetting = 0xE8)
Bit 0 ... 7: High byte (presetting = 0x03)
[Upper limit]
[Ch 0]
...
[Ch 3]
Comment An alteration of the parameter causes an initialisation of the respective channel.
– Operating mode B: For additional information
section 3.3.5.
– Operating mode C, D: For additional information section 3.3.6.
Tab. 3/33: Upper limit value (channel-specific, channel 0 … 3)