YOKOGAWA DPharp EJXC40A, Руководство пользователя

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<7. HART Communication>
7-23
IM 01C25W05-01EN
• Recalling a burst mode parameter
[Root menu] → Detailed setup → Output Condition →
HART Output → Burst Condition → Burst Message 1, 2,
or 3 → Burst Command
1. Set the send data.
Set the send data using burst command
parameters.
Burst Command Command parameter
Cmd1:PV Parameters to be sent
PV (fixed)
Cmd2:% range/
current
% range/current
(percent of range, Loop current;
fixed)
Cmd3:Dyn vars/
current
Process vars/current
(Loop current, PV, SV, TV, and
QV; fixed)
Cmd9:Device vars
w/Status
Device vars/%range/currentwith
status (user assigned
DeviceVariable, upto 8 values.)
Cmd33:Device
variables
Device vars/%range/current (user
assigned DeviceVariable, upto 4
values.)
excluding status
Cmd48:Read
Additional Device
Status
Self diagnosis information
(Self-diagnosis; fixed)
2. Set the burst variable.
If Burst Command is set to Cmd9:Device vars
w/Status, up to eight variables can be set.
If Burst Command is set to Cmd33: Device
variables, up to four variables can be set.
• Recalling burst variable parameters and
variables
Recall
parameters
Burst Condition → Burst Message1, 2,
or 3
→ Burst Variables → Burst Variable
Code
DP Select the differential pressure.
Pres 1 Select the module 1 side pressure.
Pres 2 Select the module 2 side pressure.
Temp 1 Select the module 1 side capsule
temperature.
Temp 2 Select the module 2 side capsule
temperature.
%rnge Select the percentage output.
Loop current Select the current.
PV Select the Primary Variable.
SV Select the Secondary Variable.
TV Select the Tertiary Variable.
QV Select the Quaternary Variable.
Not used Not selected.
In the case of a burst command with send
conditions, the first assigned device variable
becomes the trigger source.
3. Set the send period.
Set Update Period and Max Update Period.
NOTE
If a period shorter than the computation
period of each process value is specified, it is
automatically set so that it is greater than the
transmitter’s computation period. Update Period
for Burst Message 1 should be fixed at 0.5 s.
Set Update Period to a value smaller than Max
Update Period.
• Recalling send period parameters
Recall
parameters
Burst Condition → Burst Message1, 2
or 3
→ Set Burst Period (method)
Update
Period/Max
Update Period
0.5 s
1 s
2 s
4 s
8 s
16 s
32 s
1 min
5 min
10 min
15 min
30 min
45 min
60 min