Pepperl+Fuchs KFD HM 16 Series Manual page 59

HART Multiplexer System KFD*-HM*-16
Appendix
Command Action
Read dynamic data of up to 7
transmitters.
135

Read SCAN status of up to 31
136 transmitters.

Write SCAN status of up to 31
137 transmitters.

Read cumulative responses of up to
138

27 transmitters.
Reset cumulative responses of up to
139

35 transmitters.
Read transmitter counts of tries and
140 failures of up to 16 transmitters.

Reset transmitter counts of tries and
141

failures of up to 16 transmitters.
Read counts of host
142

communications.
Reset counts of host
143

communications.
144 Read retry limits.

Write retry limits.
145

146 Read the selected SCAN command.

147 Select SCAN command.

148 Read SCAN status.

Write SCAN status.
149

150 Read Master type (gender).

151 Write Master type (gender).

152 Read loop search type.

Write search type.
153

154 "Rebuild" up to 83 loops.

Pass through host command to
155 transmitter and transmitter response

to host.
Meaning
For the given long frame addresses the function returns the
following transmitter data:
• The selected SCAN command
• Long frame address
• HART data
For the given long frame addresses, this command returns
the SCAN status of the transmitters (0 = SCAN disabled, 1 =
SCAN enabled).
For the given long frame addresses, this command sets the
SCAN status of the transmitters (0 = disable SCAN,
1 = enable SCAN).
This command returns the OR-combination of
communication errors and status response bits.
This command resets the cumulative responses.
Communication statistic that contains the number of
commands sent to the transmitter and the number of
commands that failed.
Reset the communication statistic.
Communication statistic concerning the Multiplexer.
Reset the communication statistic.
Retries in case of "Busy": 0 ... 11 (default is 0),
Retries in case of communication errors: 0 ... 11
(default is 2).
During SCAN the HART commands 1, 2 or 3 (see above)
can be executed.
With these commands the status of the SCAN function is set
or read, respectively (see section 8.4).
0: SCAN function disabled (default after power-up)
1: Normal SCAN function activated
2: Special SCAN function activated (see 158, 159)
1 = Primary Master (default),
0 = Secondary Master.
The loop search type defines the polling address(es) for a
transmitter that did not respond during several requests
(disappeared) is searched (see also command 129).
0: Single transmitter, 4 mA ... 20 mA (single analogue)
(only polling address 0) (default)
1: Single transmitter, unknown (single unknown)
(first one of the polling addresses 0 to 15)
Note: The search procedure without any connected
transmitters is 16 times longer because all 16 polling
addresses are checked!
2: Reserved for multidrop
see section 7.1.5.
By this any command can be passed to a field device and
the response can be evaluated - without any modification by
the Multiplexer.
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