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

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26 Festo — CPX-4AE-4AA-H — 2021-06b
Commissioning
Depending on the higher-order control system, low byte and high byte may be organised differently.
–
If an invalid value has been determined, 0xFFFF is transmitted.
–
Determination of the HART variables to be transferred during parameterisation è 7.4 Parameterisa-
tion.
7.4 Parameterisation
The terminal CPX and the module described here can be parameterised with the operator unit (CPX-
MMI), the Festo Maintenance Tool (CPX-FMT) software or the higher-level system.
7.4.1 Recommended parameterisation sequence
Changed parameters are not valid until a complete check and saving procedure have been performed
(max. 30 ms). Until saving and in case of invalid values, the previous settings apply.
To prevent parameterisation errors, observe the following sequence when changing the parameterisa-
tion:
1. Activate the “Module CPX monitoring, parameterisation of error control” module parameter
è Further information.
2. Activate the “Channel 0 … 3 monitoring” for the channel to be changed è Further information.
3. Set the data format è Tab. 18 Description of the “Data format, monitoring according to
NAMUR NE43” module parameter.
4. Set the critical limits for each channel è Tab. 20 Description of “Lower critical limit of channel 0 …
3", è Tab. 21 Description of “Upper critical limit of channel 0 … 3".
–
When the upper critical limit is positive, set the upper critical limit before setting the lower
critical limit.
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If the upper critical limit is negative, set the lower critical limit before setting the upper critical
limit.
Further information on parameterisation
è
Description of system CPX and description of the bus
node.
7.4.2 Overview of parameters
Tab. 15 shows an overview of the parameters contained in the analogue module. Detailed parameter
description
è
7.4.3 Description of the module and channel parameters.
Function number Bit Parameter Default Details
4828 + m* 64 + 0 0 Monitoring of short circuit/overload Active Tab. 16
1 … 6 Reserved –
7 Monitoring of parameterisation
errors Active
4828 + m* 64 + 1 0 Behaviour after short circuit/over-
load Automatic
return Tab. 17
1 … 7 Reserved –