The CHEMCOMTM COMMUNICATIONS option provides
remote computer monitoring and operation for all CHEMTROL®
PC automated water treatment controllers.
CHEMCOMTM is available for all new CHEMTROL®
PC controllers and for existing controllers with a simple upgrade of
The CHEMCOMTM software program is a
proprietary WindowsTM program that
offers true duplex operation with identical duplicate screens on both
the controller and the computer. This means that every event on the
controller or action on the remote computer is immediately reproduced
on the other screen. This unique feature is particularly useful for
remote monitoring, operator training and troubleshooting. It also
eliminates the need to learn a new computer program.
There are several different ways to connect to the
remote controller, each being adapted to specific
situations, such as location and availability of
It is also possible to interface the controller with a
MODBUS protocol directly to a Building Management Systems
This is the simplest and most direct mode of
communication between a remote computer and the
controller. It is used when the computer is physically
close to the equipment room so that a direct line
connection can be established between the RS-485 terminal
ports on the controller and on the remote computer.
Full remote access by facility operator without need
for telephone lines and modems.
Computer must be located close to the equipment room.
This is the normal mode of remote communication using a telephone
line. It only requires an analog telephone line in the equipment room
and gives access to the controller from anywhere in the world and
from any computer programmed with CHEMCOMTM
software. Communication is through a data/voice modem on the motherboard
of the controller.
Full remote access by the operator on-site, at home or
from any remote location. Access by the dealer or
manufacturer for technical support.
Cost of telephone line and phone calls.
This is recommended for facilities with a local ethernet computer
network. The controller is connected to the network as an additional
computer. It can be accessed from any computer on the network that
has the CHEMCOMTM software program. It
can also be accessed from outside the network by connecting to the
No telephone line required and no phone bills.
Technical support from dealer or manufacturer through
Internet connection. Possible integration to Building
Management Systems (BMS).
Requires a local Ethernet network. Requires Internet
connection with static IP address.
The CHEMCOMTM remote control program
runs under WindowsTM operating software from Microsoft. The
Main Menu provides the following key functions:
SYSTEM SETUP to customize the communications options
for the remote computer, such as communication port
setting, and alarm limits for each parameter,
- FACILITIES SETUP to enter the specifics for each
remote facility, such as modem and operator phone
numbers, model and type of connection,
- SCANNING SCHEDULE for automatic scanning mode,
- REMOTE CONTROL to access and operate any of the
- DATA DISPLAY to show operational data in either
graphical ot text format.
REMOTE CONTROL SCREEN
The remote computer displays a control screen that is
an exact duplicate of the front panel of the controller.
It uses the same function keys, menus and submenus. This
allows easy operation for anyone who is familiar with
operation of the controller.
The remote screen gives full access to the controller
for monitoring, troubleshooting and operator training.
The operating data stored in the controller can be
downloaded directly to the computer and shown either as a
scan log, a text file or a graphic display. The data log
schedules are selected by the operator. On the scan log
shown here, the out-of-range values are highlighted in
red. The limits can be reset by the operator at any time
before or after data downloading.
The data log text file can be used for operation
reports, health department inspections, etc.
The operating data from the controller can also be shown
in graphic form. The operator can select parameters for
display and can zoom in and out for specific dates and times
of the day.
Both text and graphic curves can be copied and included in
reports or other documents.
1. OPTION ETHCOM: The controller shall include an
Ethernet / Internet modem for remote operation by PC-compatible
computer using Ethernet / Internet network communication.
A Windows-based software program shall be supplied with
true duplex operation capability representing the actual
controller screen display with automatic downloading and
visual graphics representation of test data. Controllers
using simulation or virtual representation of the display
screen shall not be considered equal.
2. OPTION MODBUS: The controller shall include
software-based conversion of sensor signals, setpoint,
high & low alarms, cummulative run time and total
feed time for ORP, pH, PPM, Temperature, (Conductivity,
Pressure influent and effluent, and Flow available with
optional sensors) into MODBUS protocol for monitoring on
Building Management Systems. The controller shall also
allow MODBUS writing for changing control modes and
setpoints from Building Management Systems.
3. OPTION RS485: The controller shall include a
communication converter and RS485-based multiplex
communication for remote operation by PC-compatible
computer linked directly to the controller. A Windows-based
software program shall be supplied with true duplex
operation capability representing the actual controller
screen display with automatic downloading and visual
graphics representation of test data. Controllers using
simulation or virtual representation of the display
screen shall not be considered equal.
4. OPTION 4-20 mA SIGNAL: A five (5)-channel converter
board shall be provided to convert the sensor digital
signals for ORP, pH, PPM, temperature and conductivity (TDS)
into analog 4-20 mA signals for monitoring on Building
Management Systems. The board shall be capable of sending
a sourcing or sinking type of signal.