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User Guide
Notes
•
IRT Type, Time Function Type and Current O/P Parameters are NOT
available as cyclic data
•
Any configuration MUST include the Temperature and Status module
•
Only one of any type of module is allowed
•
It is common for there to be mismatches in the order of bytes within I/P
and O/P words. Should this happen, use the CyclicDataByteOrder User
Parameter to reverse the order of the bytes within a word from the LMP.
•
The user MUST NOT configure cyclic data for inactive parameters i.e:
1) Emissivity is only configurable if a single colour IRT (M type)
has been selected in the User Parameters; 2) Non Greyness is only
configurable if a two colour ratio IRT (R type) has been selected in the
User Parameters; 3) Peak Picker parameters are only configurable if Peak
Picker has been selected in the Time Function Select User Parameter; 4)
Averager Response Time parameter is only configurable if Averager has
been selected in the Time Function Select User Parameter
•
If the LMP rejects the configuration, check that the configured modules
are compatible with the User Parameters
•
Try to keep the number of cyclic parameters to a minimum - over use
wastes Profibus bandwidth
•
Once into data exchange, if a cyclic data output from the master is
outside the limits for that parameter value, the status parameter is used
to signal this to the master i.e:
If one parameter is outside the limits,
Bits 12-15 of the status will read:
If no parameters are outside the limits,
Bits 12-15 of the status will read:
If three parameters are outside the limits,
Bits12-15 of the status will read:
4.4 Extended Diagnostics
The LMP does not use any extended diagnostics over and above the standard
diagnostics required for a Profibus DP system.
The user must monitor the Status Parameter to derive diagnostic information.
Landmark for Profibus
15
14
13
0
0
0
0
0
0
0
0
1
12
1
0
1
etc.
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