JPC 100-WEB
www.janitza.de
10
Slave n
Modbus
Fig.7: Bus topology with a UMG 605 as master and
JPC 100-WEB connected
JPC 100-WEB
UMG 605-PRO
as master
Slave 1
Slave 2
Ethernet
Modbus
Modbus
Ethernet
WARNING
Risk of injury due to electrical voltage!
Severe bodily injury or death can result
from:
• Touching bare or stripped leads that are
energized.
• device inputs that pose a hazard when
touched.
Therefore please abide by the following:
•
Disconnect your system from the pow-
er supply before starting work!
JPC 100-WEB as master
Modbus RTU Modbus RTU Modbus RTU
Slave n
Slave 1
Slave 2
Fig.8: Bus topology with the JPC 100-WEB as the master
5.
Installation
5. 1
Circuit breaker
When installing the device in a building, pro-
vide a suitable circuit breaker for the supply
voltage in order to disconnect the device
from the power supply.
• Install the circuit breaker near the device
and within easy reach of the user.
• Mark the circuit breaker as the disconnect-
ing device for this measuring device.
5. 2
Supply voltage
A supply voltage is required to operate the
device. Please refer to the technical data for
the type and level of supply voltage for your
device.
The following power supply options are
available:
• 12 V via jack connection
• 24 V via plug-in terminals
Before applying the supply voltage, make
sure that the supply voltage corresponds to
the specifi cation in the technical data. (see
section 11. on page 28)
If no indication appears on the display after
connecting the supply voltage, check wheth-
er the supply voltage is within the nominal
voltage range.
5. 3
Connection to a master device
The JPC 100-WEB is connected to the gate-
way devices / master devices of up to three
bus systems via Ethernet:
5. 4
Connection as a master device
In addition, the JPC 100-WEB is itself able to
function as a master in a bus system via the
RS485 interface.
