3D TRASAR
5500 - Installation & Operation Manual
521-OM0108.88
Copyright
2009 Nalco Company
Technical Help
(630) 305-CHEM
E-4
Controller
SCADA 485
RS-232
(DB9, PC
Connection)
GND
GND
B
-
A
+
RS-232 Connection
RS-485 Connection
Controller
SCADA 232
RS-232
(DB9, PC
Connection)
GND
GND (Pin 5)
TX
RX (Pin 2)
RX
TX (Pin 3)
Note 5
: An example of an Integer representation follows. Assume floating point register 300040
“Product 1 Dosage (Trasar)” contains 103.5 ppm. Integer register 300150 will contain the value of
1035 (1035/10 = 103.5 pm). All integer and long registers will need to be scaled by their unique
(documented) scaling factor.
Note 6
: If the controller is configured to display SI units, the corresponding engineering units will
appear on the screen and be translated to it’s corresponding Modbus register
. As example, “Sample
Temperature” will be converted from Deg F to Deg C. The corresponding Modbus registers (Input
Float and Input Integer) will hold the value in Deg C units.
Serial Wiring Connections
Display Location of Variables
Control Relay 1 - Trasar
Actions
à
Manual Relay Control
à
“Product Name” State
Control Relay 2 – Tag Polymer
Actions
à
Manual Relay Control
à
“Product Name” State
Control Relay 3 - Bioreporter
Actions
à
Manual Relay Control
à
“Product Name” State
Control Relay 4 – Oxid Biocide
Actions
à
Manual Relay Control
à
“Product Name” State
