English (GB)
3
3. Communication
Grundfos uses two types of electrical interfaces, i.e. RS-485 and
TTL, for communication with a product.
PC Tool Link is supplied with two corresponding cables.
3.1 Power supply
PC Tool Link has no internal power supply. It is powered via the
USB connector on the PC. If a USB hub is used, it must be self-
powered.
3.2 Locating virtual COM port number
Install the driver for PC Tool Link. For some PC tools, the number
assigned to the virtual COM port is needed. This information can
be found from the Device Manager in Windows.
Control panel > System > Hardware > Device Manager.
In the Device Manager, expand the "Ports (COM & LPT)" item,
and locate the "USB Serial Port" item. The virtual COM port
number will appear in brackets next to the name, e.g. USB Serial
Port (COM4) as highlighted in fig.
Fig. 1
Device Manager
If more than one PC Tool Link are connected to the PC, a virtual
COM port number will be assigned to each unit.
3.3 Connectors
PC Tool Link is supplied with three connector cables:
• 15-pole SubD female connector (connects to the Grundfos
product via RS-485)
• 15-pole SubD female connector (connects to the Grundfos
product via the TTL port)
• USB connector (connects to the PC).
4. Functional description
PC Tool Link has nine indicator lights (LEDs) for indication of the
status of communication between the PC and the Grundfos
product.
Fig. 2
LED colours
The setup.exe file can be downloaded from
www.ftdichip.com/Drivers/VCP.htm (select a VCP
driver for device "FT232R").
TM
04
41
92
10
09
If the communication fails, see section
.
T
M
0
3
9
31
1
370
7
Pos.
Colour of LED
1
Orange
2
Red
3
Red
4
Red
5
Red
6
Not in use
7
Yellow
8
Yellow
9
Green
Data
PC Tool Link
Data
RS232
TTL
GENIbus
(RS485)
Power
3 kV Galvanic Isolation
Grundfos Unit
USB
PC
3
4
5
9
8
7
6
2
1
