Honeywell Experion PKS User Manual page 165

Attention
If the Number of Channels (NUMCHANNEL) is not correctly entered or if the NETTAGNAME is wrongly
configured, then the DSB will be in configuration error state.
Configuring AIH40Ex/AIH41 Ex module for HART data
The following table lists the IO modules and the respective PDC type and the number of channels to be
configured for reading HART data.
Module Name
AIH40Ex/AIH41Ex
AIH40Ex/AIH41Ex
AIH40Ex/AIH41Ex
The first 4 channels (0 to 3) always represent process data and the remaining channels (from 4 up to 11)
represent HART data. For channels containing HART data, you must enter the physical channel numbers
(CHNNUMBER parameter present in the lower grid) for all the secondary variables to which they are
associated.
For example, assume that the module is configured for 4 secondary variables out of which 2 are read from the
first channel and other 2 are from the fourth channel. In this case, the CHNNUMBER parameter for the
channels 4 through 7 should contain data as follows:
Channels
Channel 4 and 5
Channel 6 and 7
Configuring AOH40Ex module for HART data
This module can also be configured for 1H, 4H, and 8H in the network configuration tool. You must configure
two net tag names for this module, one for the output process data and one for the input HART data. Therefore,
you must configure two PDCs; one output PDC for the usual process data and one input PDC for the HART
input data. In addition, you must configure the NUMCHANNEL parameter correctly. If the module is
configured for 1H / 4H / 8H, then the number of channels should be correctly configured as 1 / 4 / 8
respectively. The CHNNUMBER parameter for all the channels should contain the actual physical channel
numbers from which the HART data is read.
For example, assume that the module is configured for 8 secondary variables, reading 3 from first channel, 2
each from second and third channel, and 1 from fourth channel. In this case, the CHNNUMBER parameter for
the channels 0 to 7 should contain data as follows:
Channels
Channel 0, 1, and 2
Channel 3 and 4
Channel 5 and 6
Channel 7
Number of secondary
variables configured for the
IO module
1H
4H
8H
Channel Number (CHNNUMBER)
0, 0
3, 3
Channel Number (CHNNUMBER)
0
1
2
3
7 DEVICE SUPPORT BLOCK (DSB)
PDC type to be configured
AnalogInput-AIH40Ex/
AIH41Ex
AnalogInput-AIH40Ex/
AIH41Ex
AnalogInput-AIH40Ex/
AIH41Ex
Number of Channels
5 (4 + 1)
8 (4 + 4)
12 (4 + 8)
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