User Manual

Chapter 4: Module Data, Status, and Configuration
U ser 's M a n u a l 0 300 21 5- 03 R ev. A
6-7
NOTE Default settings for a particular function are indicated by zero(s). For example,
the default filter f req uency is 60Hz. Publication
Handle Ti meout
There is a handle timeout associated with the final reply message. After the module
obtains the requested information from the HART d evice, it will start t he Handle Timeout
timer. The reply message will be kept in memory during the Handle Timeout period.
After the timeout occurs or after the message is retrieved by the pass-through response
query command, the storage buffer will be discarded, and another pass through message
will be serviced without being rejected. Handle Timeout is in the range of 0 to 25 5
seconds.
Note: A handle timeout of zero is valid. When set to zero the handle timeout will
default to 10 seconds.
Channel HART Enable (Bits 8, 9, 10, 11)
These bits allow the user to enable HART on channels 0 through 3, respectively.
Pass-Thro ugh Scheme
The pass-through scheme determines how o ften a pass through command is service d.
• Two Channel Scans: Pass-through serviced once every two channel scans
• Once Per Module Scan: Pass-through serviced once per module scan
• Every Channel Scan: Pass-through serviced once every channel scan
Note: The pass-through scheme can increase the HART packet update time if pass-
through messages are serviced every channel scan. Refer to Chapter 7 fo r more
details.
ETS (Enable Time Stamp)
Allows module time stamping function to be enabled. See section 6.3.2 for more details.
6.4.3 Filter Frequency and General Settings (Words 2, 8, 14, 20)
This section of the configuratio n allows the user to configure filter frequencies, enable o r
disable the associated channel, etc.