External Switch Mode; Software Write Protect - YOKOGAWA Dpharp vigilantplant EJA Series User Manual

Example: Communication when set in the multi-drop mode
1
(1) The HART communicator
HART Communicator
Online
1 EJA110-1
2 EJA110-2
3 EJA110-3
HELP SET HOME OK
2
EJA:EJA110-1:
Online
1 Device setup
2 Pres 0.00 mmH2O
3 A01 Out .000 mA
(2) Select the desired transmitter.
4 LRV 0.00 mmH2O
5 URM 3500.00 mmH2O
DEL SET ABORT OK
3
HART Communicator
1 Offline
2 Online
(3) To communicate with another
3 Transfer
4 Frequency Device
5 Utility
HELP DEL ABORT OK
(4) Display
To Release the Multi-drop Mode:
Follow the procedure below.
1. Call up the Poll addr display, and set the address
to 0.
2. Call up the Auto Poll display, and set to No.

(17) External Switch Mode

• Enabling/inhibiting zero point adjustment using the
external zero-adjustment screw on the transmitter.
Follow the procedure below to enable or inhibit zero
point adjustment from the zero-adjustment screw on
the transmitter.
This is set to ENABLE when the instrument is
shipped.
Example: Inhibiting zero adjustment by the external zero-
adjustment screw
1. Device setup
4. Detailed setup
5. Device information
1. Field device info
7. Ext SW mode
EJA:
Ext SW mode
Enable
Enable
Inhibit
HELP SEND ESC ENTER
(ENTER)
(SEND)
Select Inhibit and press ENTER
(F4).
Press SEND (F2) to send the data.
searches for the transmitter that
is set in the multi-drop mode
when the HART communicator
is turned on.
When the HART communicator
is connected to the transmitter,
the manufacturer's x'ter type
code and the tag will be
displayed (display 1 ).
After that, normal
communication to the selected
transmitter is possible. However,
the communication speed is
slow in this case (display
2
transmitter, turn off the power
once and then turn on it again,
or call up display , and select
3
Online.
1 will appear. Select
the desired transmitter.
F0236.EPS
F0237.EPS

(18) Software Write Protect

EJA configured data is saved by the write protect
function. Write protect status is set to YES when 8
alphanumerics are entered in the New password
field and transferred to the transmitter. In write protect
YES status, the transmitter does not accept parameter
changes. When the 8 alphanumeric string entered in the
New password field is also entered in the Enable
write field and transferred to the transmitter, it will be
possible to change transmitter parameters during a 10
minute period.
To change the transmitter from Write protect YES
status back to Write protect NO status, enter 8 spaces
in the New password field after Write protect has been
).
released using enable write.
(a) Setting Password
Example: Set the password to 1 2 3 4
EJA:
Hot key
1 keypad input
2 Enable Write
3 New password
HELP SEND ESC
EJA:
Enter New Password
********
********
HELP DEL ABORT ENTER
EJA:
Re-Enter New
Password
1234
1234
HELP DEL ABORT ENTER
EJA:
Set New Password OK
HELP DEL ABORT
EJA:
Method Aborted
HELP DEL ABORT
2-17
2. HART COMMUNICATOR OPERATION
ENTER
Press Hot key.
Select the New password.
(ENTER)
Set 1 2 3 4
ENTER (F4).
(ENTER)
Press ENTER (F4).
(OK)
Press OK (F4).
OK
Write Protect status changes from
NO to YES.
(OK)
Press OK (F4).
OK
IM 01C22T01-01E
and press
4
(DEL)
F0238.EPS