YOKOGAWA DPharp EJXC40A, Руководство пользователя

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<7. HART Communication>
7-4
IM 01C25W05-01EN
7.2.2 Basic Setup
IMPORTANT
After setting and sending data with the HART
configuration tool, wait at least 30 seconds
before turning off the transmitter.
If it is turned off too soon, the settings will not be
stored in the transmitter.
7.2.2.1 Tags and Device Information
If specified at the time of order, the specified tag
number and device information are set before
shipment.
To check the tag number and device information,
follow the procedure below.
• Recalling parameters
Tag [Root menu] → Basic setup → Device
Information → Tag
Long tag [Root menu] → Basic setup → Device
Information → Long tag
Descriptor [Root menu] → Basic setup → Device
information → Descriptor
Message [Root menu] → Basic setup → Device
information → Message
Date [Root menu] → Basic setup → Device
information → Date
To change the tag number or device information,
enter the information directly within the limitation on
the number of characters.
Item
Limitation on the number of
characters
Tag Up to 8 alphanumeric characters *1
Long tag Up to 32 alphanumeric characters
*2
Descriptor Up to 16 alphanumeric characters *1
Message Up to 32 alphanumeric characters *1
Date mm/dd/yyyy
• mm: month (2-digit number)
• dd: date (2-digit number)
• yyyy: year (4-digit number)
*1: The symbols, characters, and numbers enclosed by bold
lines in the following table can be used.
*2: All the symbols, characters, and numbers in the following
table can be used.
SP ! “ # $ % & ‘ ( ) * + , - . /
0 1 2 3 4 5 6 7 8 9 : ; < = > ?
@ A B C D E F G H I J K L M N O
P Q R S T U V W X Y Z [ \ ] ^ _
` a b c d e f g h i j k l m n o
p q r s t u v w x y z { | } ~
* “SP” represents one-byte space.
7.2.2.2 Setting Process Variables
The transmitter can handle five types of data (these
are called device variables): differential pressure
(DP), module 1 side pressure (Pres 1), module
2 side pressure (Pres 2), module 1 side capsule
temperature (Temp 1), and module 2 side capsule
temperature (Temp 2). Of these, four are assigned
to PV (Primary Variable), SV (Secondary Variable),
TV (Tertiary Variable), and QV (quaternary
variable). These are called process variables. The
variable assigned to PV becomes the current output
ranging from 4 to 20 mADC. As such, module 1 side
capsule temperature and module 2 side capsule
temperature cannot be assigned to PV. The factory
default assignments are as follows:
PV: differential pressure (DP)
SV: module 1 side pressure (Pres 1)
TV: module 2 side pressure (Pres 2)
QV: module 1 side capsule temperature (Temp 1)
• Recalling and setting parameters
Recall PV
parameters
[Root menu] → Process variables →
Output vars → PV is →
PV is Displays the device variable assigned
to PV
Change
PV Assgn
(method)
Select the device variable to assign to
PV. DP, Pres 1, Pres 2
Recall SV
parameters
[Root menu] → Process variables →
Output vars → SV is →
SV is Displays the device variable assigned
to SV
Change
SV Assgn
(method)
Select the device variable to assign to
SV. DP, Pres 1, Pres 2, Temp1, Temp2
Recall TV
parameters
[Root menu] → Process variables →
Output vars → TV is →
TV is Displays the device variable assigned
to TV
Change
TV Assgn
(method)
Select the device variable to assign to
TV. DP, Pres 1, Pres 2, Temp1, Temp2
Recall QV
parameters
[Root menu] → Process variables →
Output vars → QV is →
QV is Displays the device variable assigned
to QV
Change
QV Assgn
(method)
Select the device variable to assign to
QV. DP, Pres 1, Pres 2, Temp1, Temp2