3 bus power on, 4 integration of dd, 5 reading the parameters – Yokogawa EJA115 User Manual

Page 21: Bus power on -3, Integration of dd -3, Reading the parameters -3

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IM 01C22T02-01E

4-3

4. GETTING STARTED

4.3 Bus Power ON

Turn on the power of the host and the bus. Where the
EJA 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
EJA 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 EJA. The device information is given in
duplicate on this sheet.

DEVICE INFORMATION

Device ID

:

5945430003XXXXXXXX

PD Tag

:

PT1001

Device Revision

:

2

Node Address

:

0xf3

Serial No.

:

XXXXXXXXXXXXXXXXX

Physical Location

:

Note:

Our Device Description Files and Capabilities Files available at

http://www.yokogawa.com/fi/fieldbus/download.htm (English) or

http://www.yokogawa.co.jp/Sensor/fieldbus/download.htm (Japanese)

DEVICE INFORMATION

Device ID

:

5945430003XXXXXXXX

PD Tag

:

PT1001

Device Revision

:

2

Node Address

:

0xf3

Serial No.

:

XXXXXXXXXXXXXXXXX

Physical Location

:

Note:

Our Device Description Files and Capabilities Files available at

http://www.yokogawa.com/fi/fieldbus/download.htm (English) or

http://www.yokogawa.co.jp/Sensor/fieldbus/download.htm (Japanese)

F0403.EPS

Figure 4.3 Device Information Sheet Attached to EJA

If no EJA 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 EJAs are
connected at a time with default value, only one EJA
will be detected from the host as EJAs have the same
initial address. Separately connect each EJA and set a
different address for each.

4.4 Integration of DD

If the host supports DD (Device Description), the DD
of the EJA needs to be installed. Check if host has the
following directory under its default DD directory.

594543\0003

(594543 is the manufacturer number of Yokogawa
Electric Corporation, and 0003 is the EJA device
number, respectively.)

If this directory is not found, the DD of EJA 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. If you do not have the DD or capabili-
ties files, you can download them from our web site.
Visit the following web site.

http://www.yokogawa.com/fi/fieldbus/download.htm

Once the DD is installed in the directory, the name and
attribute of all parameters of the EJA are displayed.

Off-line configuration is possible by using capabilities
files.

NOTE

Ensure to use the suitable file for the device.
EJA has two types, one with the standard
function blocks and /LC1 with PID/LM function. If
the different type CFF is used, some errors may
occur at downloading to the device.

4.5 Reading the Parameters

To read EJA parameters, select the AI1 block of the
EJA from the host screen and read the OUT parameter.
The current selected signal is displayed. Check that
MODE_BLK 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.

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