HART E018-P, Руководство пользователя, Страница: 29 / 64

E018-P User Manual
FW_E018-P_M_v0301-01_EN Page 29
5.5.9 MENU 9: HART COMMUNICATION
The E018-P can optionally be equipped with a communication interface that uses the HART protocol
(Type CR). See
Section C: Hart communication [»58]
for a more detailed explanation of the protocol,
data types, and available commands.
9 HART COMMUNICATION
9.1 ADDRESS This is the 0..63 HART bus address.
When an address other than 0 is selected, the loop current mode is not
updated to automatically work in multidrop mode.
If the unit is used in multidrop mode, the loop current mode must be
manually set to Disabled (See
SETUP 9.2: HART COMMUNICATION > LOOP
CURRENT [»29]
).
9.2 LOOP CURRENT This mode is used when the unit is used in a multidrop bus configuration.
By disabling the loop current, the output current is set to 4 mA and several
HART units can be connected to the same bus.
The following selections are available:
●
Enabled: Normal mode, output current follows flowrate.
●
Disabled: Fixed mode, output current is fixed at 4 mA.
If the unit is used in multidrop mode, make sure each HART device on the
bus is configured with a different bus address (See
SETUP 9.1: HART
COMMUNICATION > ADDRESS [»29]
).
9.3 LOOP TEST This test temporarily sets the output current to 4 mA or to 20 mA for
calibration purposes.
When leaving the SETUP level and returning to the operator level, this
setting is reset, and the output current functions as before.
The following selections are available:
●
Off: Output current set to normal.
●
Set 4 mA: Output current set to 4 mA.
●
Set 20 mA: Output current set to 20 mA.
The loop test function only works if
SETUP 9.2: HART COMMUNICATION > LOOP
CURRENT [»29]
has been set to ‘enabled’.
The loop test function is reset to ‘Off’ when leaving the SETUP level, or
when the unit is restarted.
5.5.10 MENU 10: OTHERS
10 OTHERS
10.1 MODEL Provides important information on your unit. This information may be
required for maintenance, support and upgrade purposes.
10.2 SOFTWARE
VERSION
Provides important information on your unit. This information may be
required for maintenance, support and upgrade purposes.
10.3 SERIAL NUMBER
Provides important information on your unit. This information may be
required for maintenance, support and upgrade purposes.
10.4 PASSWORD All SETUP values can be password protected.
A four-digit password can be programed, for example 1234.
To disable password protection, enter four zeros (0000).
10.5 KEY LOCK To prevent misuse of the optical keyboard it can be locked automatically
after 30 seconds by enabling this function.
In battery supplied applications, the backlight can come on each time the
keyboard is activated. As this can quickly degrade the battery, it is advised to
leave the keyboard lock function enabled so that the backlight only comes on
when an optical key is pressed for at least one second. The keyboard lock
function also uses less battery power.
10.6 TAG NUMBER For identification of the unit and communication purposes, a unique tag
number of maximum seven digits can be entered.