Operating Manual
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EWAT_B
CAUTION: Maintain the correct polarity when connecting the power supply to the boards, otherwise
the peripheral bus communication will not operate and the boards may be damaged.
2.5
Communication Modules
Any of the following modules can be connected directly to the left side of the main controller to allow a BAS or other remote
interface to function. Up to three can be connected to the controller at a time. The controller should automatically detect
and configure itself for new modules after booting up. Removing modules from the unit will require manually changing the
configuration.
Module
Siemens Part Number
Usage
BacNet/IP
POL908.00/MCQ
Optional
Lon
POL906.00/MCQ
Optional
Modbus
POL902.00/MCQ
Optional
BACnet/MSTP
POL904.00/MCQ
Optional
3
USING THE CONTROLLER
The standard HMI consists of an inbuilt display (A) with 3 buttons (B) and a push’n’roll control (C).
The keypad/display (A) consists of a 5-line by 22 character display. The function of the three buttons (B) is described
below:
Alarm status (from any page it links with the page with alarm list, alarm log and alarm snapshot if available)
Back to Main Page
Back to the previous level (it can be the Main Page)
The push’n’roll command (C) is used to scroll between the different menu pages, settings and data available on the HMI
for the active password level. Rotating the wheel allows to navigate between lines on a screen (page) and to increase and
decrease changeable values when editing. Pushing the wheel acts as an Enter Button and will jump from a link to the next
set of parameters.
3.1
Navigating
When power is applied to the control circuit, the controller screen will be active and display the Home screen, which can
also be accessed by pressing the Menu Button.
An example of the HMI screens is shown in the following picture.
M a i n
M e n u
1 / 11
E n t e r
P a s s w o r d
U n i t
S t a t u s =
O f f :
U n i t
S W
A c t i v e
S e t p t =
7 . 0 ° C
A bell ringing in the top right corner will indicate an active alarm. If the bell doesn’t move it means that the alarm has been
acknowledged but not cleared because the alarm condition hasn’t been removed. A LED will also indicate where the alarm
is located between the unit or circuits.
M a i n
M e n u
1 /
E n t e r
P a s s w o r d
U n i t
S t a t u s =
O f f :
U n i t
S W
A c t i v e
S e t p t =
7 . 0 ° C
The active item is highlighted in contrast, in this example the item highlighted in Main Menu is a link to another page. By
pressing the push’n’roll, the HMI will jump to a different page. In this case the HMI will jump to the Enter Password page.
E n t e r
P a s s w o r d
2 / 2
E n t e r
P W
* * * *
3.2
Passwords
The HMI structure is based on access levels that means that each password will disclose all the settings and parameters
allowed to that password level. Basic informations about the status can be accessed without the need to enter the
password. The user UC handles two level of passwords:
A
B C
UC
A
