ICP DAS USA ICP CON GW-7557, Руководство пользователя

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GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 27
configuration tool. The common parameters are described below.
●
HART Frame Format
：
Transparent/Compact
●
Error Retry Count
：
0~5
●
HART Command Interval (ms)
：
75~65535
●
Timeout Value (ms)
：
305~65535
●
HART Master Type(CH-0)
：
Primary/Secondary
●
HART Master Type(CH-1)
：
Primary/Secondary
●
HART Master Type(CH-2)
：
Primary/Secondary
●
HART Master Type(CH-3)
：
Primary/Secondary
●
HART Network Type(CH-0)
：
Point to Point/Multi Drop
●
HART Network Type(CH-0)
：
Point to Point/Multi Drop
●
HART Network Type(CH-0)
：
Point to Point/Multi Drop
●
HART Network Type(CH-0)
：
Point to Point/Multi Drop
PS
：
a. Transparent: The user has to fill in HART frame data completely in PROFIBUS
output data area and send HART frame to HART slave
devices !manually.
Compact: The user has to choose HART command modules which HART
slave devices desired. Device configuration of HART slave devices
can configure by utility tool.(About how to configure HART slave
devices, please refer to section 5.2 for detail)
b. Error Retry Count: If the HART communication has error, GW-7557 will retry.
About the times it is according to this parameter.
c. HART Command Interval (ms): This parameter will decide the polling
interval of HART command.
EX: HART command 1 query
→
HART command 1 response
→
wait
(cmd interval)
→
HART command 2 query
→
HART command 2
response
→
wait (cmd interval)
→ …
d. Timeout Value (ms): This parameter is about the timeout value of HART
command.
e. HART Master Type: The user can set the master type of HART slave devices.
This parameter will decide the HART frame and minimum timeout value. We
suggest setting the master type to Primary Master in the general situation.
f. HART Network Type: The user can set the Network type of HART slave
devices. If the network type is “Point to Point”, it means it has only one HART
slave device at HART bus. If the network type is “Multi-Drop”, it means it has
more than one HART slave device at HART bus.