Technical Manual
|
Dräger Polytron
®
8000 Series
75
Interface settings
2. Select the current line for editing the current and confirm.
3. Set the current and confirm.
The setting for the beam block current is displayed.
4. Select
Confirm
and confirm with OK.
13.2 HART
®
interface
13.2.1 Setting
Polling
Adress
The polling address configures the instrument for analog operation (4 to 20 mA) or
multidrop operation. Setting the polling address to 0 activates analog operation (4
to 20 mA). Setting the polling address to a value between 1 and 15 activates
multidrop operation. In multidrop operation the analog interface is deactivated and
set to a constant current of approximately 1 mA.To allow the central controller to
request the Unique Identifier (unique HART address) with HART command #0, all
the devices on a line must be configured with different polling addresses. It is
advised to choose a sequence starting with 1 and continuous increments. This
function corresponds to HART command #6 (Write Polling Address).
1. Select
Settings
>
Communication
>
Hart Schnittst.
>
Polling Adresse
.
2.
Set Polling Adress
and
Confirm
.
13.2.2
Display HART address (Unique Identifier)
This function reads the Unique Identifier (unique HART address). It has to be
known for almost all HART addressing commands. However, this information is
only required for systems which are not able to read back the Unique Identifier
using the HART command #0 in Short-Frame Format or HART command #11. The
display corresponds to the address for HART command #0 (Read Unique Identifier)
or #11 (Read Unique Identifier associated with Tag).
1. Select
Settings
>
Communication
>
Hart Schnittst.
>
Unique Identifr
.
2. Set a unique HART address and
Confirm
13.2.3 Setting
HART
Tag
The tag can be used to identify an instrument. It can contain up to 8 alphanumeric
characters. The tag can also be used as an address for reading the unique identifier
using HART command #11 (Read Unique Identifier Associated with Tag), even if
the polling address is unknown. This requires that a unique tag has been configured
for each instrument.
1. Select
Settings
>
Communication
>
Hart Schnittst.
>
Tag
.
2. Set HART tag and
Confirm
.
13.2.4 Settings
Dräger REGARD protocols
This function switches between different HART protocols.
1. Select
Settings
>
Communication
>
Hart Schnittst.
>
Dräger REGARD
2. Select the software version corresponding to your REGARD controller.
Beamblock limit.
This function defines the maximum
limit if the beam block signal will be
transmitted on the analog interface.
Содержание Polytron 8000 Series
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