Manual 37443A DSLC-2 - Digital Synchronizer and Load Control
Page 180/226 © Woodward
Remote Control By PLC
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The DSLC-2 / MSLC-2 system offers two channels of Ethernet and one channel serial interface RS-485. Ethernet
channel A is the dedicated communication bus for the Woodward own UDP message system, which is used to
exchange information between all units in the network. In Menu 5.1 the “Network A –UDP TCP/IP address”
(parameter 5330) has to be configured for. Each unit gets its own address usually related to the own Device num-
ber (parameter 1702).
Ethernet channel B can be used for visualization and remote control of all units. The protocol here used is Mod-
bus/TCP. In Menu 5.1 the “Network B – Modbus TCP/IP address” (parameter 5430) has to be configured for.
Each unit gets its own address usually related to the own Device number (parameter 1702).
Additionally the unit offers a serial RS-485 connection for visualization and remote control. The visualization can
be done simultaneously by Ethernet and RS-485. In Menu 5.1 the “Modbus Serial Interface 2 Modbus slave ID”
(parameter 3188) has to be configured for. Each unit gets its own slave ID usually related to the own Device
number (parameter 1702).
The remote control has to be configured for either RS-485 or Ethernet. Furthermore the DSLC-2 / MSLC-2 al-
lows distribute functions to discrete inputs and to protocol bits.
Interface Connection Via RS-485 With Modbus Protocol
The DSLC-2 / MSLC-2 system provides a RS-485 Modbus connection. Each unit gets an own Modbus slave ad-
dress. The DSLC-2 as the MSLC-2 allows to configure each parameter or to inform about each measurement val-
ue and binary information. For visualization the unit offers a special mapped Modbus table with all important
values refer to “Data Protocol 5200“ on page 206.
Figure 8-9: Visualization and remote control by PLC via RS-485 interface
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