6 ethernet, 1 bus topology, Bus topology – IMP Pumps NMTC module User Manual
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Relay configuration number can be modified by either the web interface, Modbus register 012 or the
Mode switch.
6 Ethernet
Terminal
designation Description
MODE
Can be used to reset network configuration
LED1 / LINK Slowly blinking when module is powered, permanently lid when link established.
Ethernet
10BASE-T RJ-45 connector.
LED2 / ACT Indicates Ethernet activity or Modbus reception.
The communications module has a built in web server which allows you to access your pump directly to
an existing Ethernet connection. Direct connection to a computer is also possible with a cross over
cable.
The web server uses HTML pages to set/view:
• Regulation mode settings
• Regulation parameters (power, RPM, head, flow, efficiency)
• Relay settings
• External control inputs
• Current and previews error
• Pump statistics (power consumption, run time and other).
6.1 Bus topology
0
Error
[default]
Only active when the pump is powered
up and detects a problem with
operation.
NC NO
C
1
Ready
The relay signal is active when the pump
is ready for operation.
NC NO
C
2
Operation
The relay signal is active as long as the
pump is operating. If the pump comes to
a stop or an error occurs, relay will
deactivate.
NC NO
C
-
Relay output not active.
NC NO
C