D397-50-880 Issue C
Page 20
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Operation
4.6.5
Diagnostics description
The modules use extended diagnostics in the format below.
Max_Diag_Data_Len = 12
Note:
An appropriately configured software module will be shown as a parameterisation failure if that module
contains parameterisation data as the Profibus standard is for parameterisation to occur before
configuration. If there is more than one bad parameterisation or configuration entry, the module number
will be the first bad module in the order of configuration.
4.7
Details of DX Pump Software modules
Introduction
This section applies only to the DX pump Profibus module. The table below provides a summary of the modules.
Table 14 - DX pump module summary
Bytes
1-6
7
8 and 9
10 and 11
12
Description
Mandatory
No of bytes of
extended
diagnostics (6)
Module failed
parameterisation,
MSB in 8, LSB in 9
Module failed
configuration,
MSB in 10, LSB in
11
Serial comms
lost (0=OK,
1=lost).
Module No
Module description
Compatibility
No of output
bytes
No of input
bytes
No of
Parameter
bytes
852
DX pump control
75DX or 255DX
1
6
None
853
DX pump set-up
75DX only
None
1 (Dummy)
7
853
DX pump set-up
255DX only
None
1 (Dummy)
7
859
DX pump temperature
75DX or 255DX
None
2
None
860
DX pump power
75DX or 255DX
None
2
None
869
DX pump speed demand
75DX or 255DX
1
None
4
875
DX vent valve close
75DX or 255DX
1
None
None
902
DX Profibus module Software
Version
DX Profibus
Module
None
2
None
