IM 01C25R03-01E
4-3
4. GETTING STARTED
4.3 Bus Power ON
Turn on the power of the host and the bus. Where the
EJX910A is equipped with an LCD indicator, first all
segments are lit, then the display begins to operate. If
the indicator is not lit, check the polarity of the power
supply.
Using the host device display function, check that the
EJX910A is in operation on the bus.
The device information, including PD tag, Node
address, and Device ID, is described on the sheet
attached to the EJX910A. The device information is
given in duplicate on this sheet.
DEVICE INFORMATION
Device ID
:
594543000EXXXXXXXX
PD Tag
:
FT1001
Device Revision
:
1
Node Address
:
0xf5
Serial No.
:
XXXXXXXXXXXXXXXXX
Physical Location
:
Note:
Our Device Description Files and Capabilities Files available at
http://www.yokogawa.com/fld (English) or
http://www.yokogawa.co.jp/Sensor/fieldbus/fieldbus.htm (Japanese)
DEVICE INFORMATION
Device ID
:
594543000EXXXXXXXX
PD Tag
:
FT1001
Device Revision
:
1
Node Address
:
0xf5
Serial No.
:
XXXXXXXXXXXXXXXXX
Physical Location
:
Note:
Our Device Description Files and Capabilities Files available at
http://www.yokogawa.com/fld (English) or
http://www.yokogawa.co.jp/Sensor/fieldbus/fieldbus.htm (Japanese)
F0403.EPS
Figure 4.3 Device Information Sheet Attached to EJX
If no EJX910A is detected, check the available address
range and the polarity of the power supply. If the node
address and PD tag are not specified when ordering,
default value is factory set. If two or more EJX910As
are connected at a time with default value, only one
EJX910A will be detected from the host as EJX910As
have the same initial address. Separately connect each
EJX910A and set a different address for each.
4.4 Integration of DD
If the host supports DD (Device Description), the DD
of the EJX910A needs to be installed. Check if host
has the following directory under its default DD
directory.
594543\000E
(594543 is the manufacturer number of Yokogawa
Electric Corporation, and 000E is the EJX910A
device number, respectively.)
If this directory is not found, the DD of the EJX910A
has not been included. Create the above directory and
copy the DD file (0m0n.ffo, 0m0n.sym) (m, n is a
numeral) into the directory. ‘0m’ in the file name
shows the device revision, and ‘0n’ shows the DD
revision. If you do not have the DD or capabilities
files, you can download them from our web site:
http://www.yokogawa.com/fld
Once the DD is installed in the directory, the name and
attribute of all parameters of the EJX910A are dis-
played.
Off-line configuration is possible by using capabilities
files.
EJX has two capabilities levels, “1” and “2”.
Select “Capabilities level = 1” when the EJX910A
don’t have LC1(PID function) option.
Select “Capabilities level = 2” when the EJX910A has
LC1(PID function) option.
The capabilities level defines the kind and the number
of function blocks that can be used.
The table below shows the relation.
The relation between and function blocks that can be used
T0402.EPS
5
AI
SC
IT
IS
AR
PID
Capabilities
Level
1
2
1
1
1
1
0
5
1
1
1
1
1
4.5 Reading the Parameters
To read EJX910A parameters, select the AI1 block of
the EJX910A from the host screen and read the OUT
parameter. The current selected signal is displayed.
Check that MODE_BLOCK of the function block and
resource block is set to AUTO, and change the signal
input and read the parameter again. A new designated
value should be displayed.
