Omega Engineering ILD24-C2 - Manual (Page 2)

2. Wiring RS-485 Interface.
The RS-485 standard (multipoint) allows a computer, one or more
devices and Big Displays (up to 32) to be connected using a two-
wire connection (half-duplex) plus a common wire to connect to the
shield of the cable. It is recommended to use shielded cable with
one twisted pair for EMI noise protection.
Connections to the computer are optional.
Example 2:
Alarm 1 setup:
“ON”, Alarm Mode Low “A1LO”, Alarm Low
Value “LO-1”=100, Alarm Color “A1CR”=Amber
Alarm 2 setup:
“ON”, Alarm Mode LO “A2LO”, Alarm High
Value “LO-2”=300, Alarm Color “A2CR”=Red
Normal Color:
“NO.CR”=Green
Display colors change sequences:
AMBER I RED I GREEN
-- ------------•-------------------------------•------------------------------ ---
0 LO-1 = 100 LO-2 = 300
Example 3:
Alarm 1 setup:
“ON”, Alarm Mode Low/High “A1LH”, Alarm Low
Value “LO-1”=100, Alarm High Value “HI-1”=250,
Alarm Color “A1CR”=Amber
Alarm 2 setup:
“ON”, Alarm Mode Low/High “A2LH”, Alarm Low
Value “LO-2”=150, Alarm High value “HI-2”=200,
Alarm Color “A2CR”=Red
Normal Color:
“NO.CR”=Green
Display colors change sequences:
AMBER I RED I GREEN I RED I AMBER
•--➤---------•-----------------•-----------------•-----------------•-----------➤
0 LO-1 = 100 LO-2 = 150 HI-2 = 200 HI-2 = 250
CONFIGURATION
Button Functions in Configuration Mode
• To enter the Menu, the user must first press a button.
• Use this button to advance/navigate to the next menu
item. The user can navigate through all the top level
menus by pressing
a.
• While a parameter is being modified, press a to
escape without saving the parameter.
• Press the up b button to scroll through submenu
selections. When a numerical value is displayed press
this key to increase value of a parameter that is
currently being modified.
• In the Run Mode pressing b causes the display
to flash the PEAK value several times before returning
to the Run Mode.
• In the top menu press b causes the display to return to
the Run Mode.
• Press the down c button to scroll through submenu
selections. When a numerical value is displayed press
this key to decrease value of a parameter that is
currently being modified.
• In the Run Mode press c causes the display to flash
the Valley value several times before returning to the
Run Mode.
• In the top menu press c causes the display to return to
the Run Mode.
• Press this button to access the submenus from a Top
Level Menu item.
• Press this button to store a submenu selection or after
entering a value – the display will flash a
STOR
message to confirm your selection.
x, w, z, and some punctuations are non-printable characters.
d
(ENTER)
c
(DOWN)
b
(UP)
a
(MENU)
Mounting Big Display on Bail:
1. Use the Big Display template to mark the location of
mounting screws on the flat surface.
2. Be sure to leave enough room around the bail (as noted on the
template drawing) to allow for removal and rotation of the display.
3. The display can be rotated for the best viewing angle.
Disassembly Instruction:
Warning: Disconnect all ac power from the unit before
proceeding.
1. Remove all wiring connections from the rear of the instrument, by
unscrewing the power and input connectors.
2. Remove six screws at the back of the display and back cover.
3. Remove the Big Display from the panel.
4. To remove the Big Display from the bail, unscrew the two
knobs at each end of the mounting brackets.
DESCRIPTION:
The iLD24 is a 4-digit master/slave display providing remote readout
from instruments such as programmable controllers, digital panel
meters and other instruments with serial output. Communication
interfaces supported are RS-232 or RS-485 standards. Both
RS-232 or RS-485 are programmable through front panel buttons.
The Big Display features a large three color programmable display
with the capabitity to change color every time an Alarm is triggered.
SAFETY:
• The instrument is a panel mount device protected in
accordance with EN61010-1:2001.
EMC:
• Whenever EMC is an issue, always use shielded cables.
• Never run signal and power wires in the same conduit.
• Use signal wire connections with twisted-pair cables.
• Install Ferrite Bead(s) on signal wire close to the instrument if
EMC problems persist.
MOUNTING
Mounting Big Display Through Panel:
1. Using the panel cutout diagram shown above, cut an opening in
the panel.
2. Remove six screws at the back of Big Display to remove back
cover.
3. Insert the unit into the opening from the front of the panel, so the
gasket seals between the bezel and the front of the panel.
4. Align back cover to Big Display and reinstall screws.
WIRING
1. Wiring RS-232 Interface.
The RS-232 standard (point-to-point) allows a single device to be
connected to the Big Display using a three-wire connection (full
duplex).
AC PWR
TB1
DC
TB2
REMOTE
PROGRAMMER
TB3
1 2 3 1 2 1 2 3 4 5
AC PWR DC PWR REMOTE PROGRAMMER
L N + -
COMM
RS232/485
COMM.
TB4
PJ3
1 2 3 4 5 6
1 3 5
2 4 6
RJ12 JACK
TX RX RT
N
TX RX RT
N
DEVICE WITH
RS232 OUTPUT
1 2 3
Device with RS-232 Large Remote Display
Pin Function RJ-12 Screw Terminal
Receive (Rx) 4 (Tx) 3 (Tx)
Transmit (Tx) 3 (Rx) 2 (Rx)
Common Ground (COM) 5 1
3. Power Connection.
Connect the main power connections as shown in the figure below.
OPERATIONS
1. Peak Value (Display in Host Mode)
Press b to request “Peak” value:
a) RS-232 Mode, will send:
*X02 (Interface DRNT), or *X03 (Interface DRNP)
b) RS-485 Mode, will send:
*01X02 (Interface DRNT), or *01X03 (Interface DRNP)
In the examples for RS-485 it is assumed that the
device address is 01.
2. Valley Value (Display on Host Mode)
Press c to request “Valley” value.
a) RS-232 Mode, will send:
*X03 (Interface DRNT), or *X04 (Interface DRNP)
b) RS-485 Mode, will send:
*01X03 (Interface DRNT), or *01X04 (Interface DRNP)
3. Process Value (Display on Host Mode)
Press d to request “Process” Value.
a) RS-232 Mode, will send: *X01
b) RS-485 Mode, will send: *01X01
4. Write alphanumeric characters to the Big Display
from the computer (Display in Slave Mode)
a) Single Big Display: (RS232) write 4 characters, then
CR (carriage return)
b) Multiple Big Display: (RS485) write *, device address
(2 digit), CR, 4 characters, then CR
5. Display Color Setup (Alarm Setup)
This menu allows the user to select the color of the display in
normal conditions and when alarm is triggered. If user wants the
Display to change color every time when both Alarm 1 and Alarm 2
are triggered, the Alarm values should be set in such a way that
Alarm 1 is always on the top of Alarm 2 value, otherwise value of
the Alarm 1 will overwrite value of Alarm 2 and Display color would
not change when Alarm 2 is triggered.
Example 1:
Alarm 1 setup:
“ON”, Alarm Mode High “A1HI”, Alarm High
Value “HI-1”=400, Alarm Color “A1CR”=Amber
Alarm 2 setup:
“ON”, Alarm Mode High “A2HI”, Alarm High
Value “HI-2”=200, Alarm Color “A2CR”=Red
Normal Color:
“NO.CR”=Green
Display colors change sequences:
GREEN I RED I AMBER
•--➤-------------------------•--------------------------------•----------------➤
0 HI-2 = 200 HI-1 = 400
POWER
Computer Card Device with Remote Display
or Converter Box RS-485 Pin
Pin Function Function RJ-12 Screw Terminal
A, -Tx/-Rx -Tx/-Rx 4 3
B, +Tx/+Rx +Tx/+Rx 3 2
COM COM 1
➤ ➤