IGS-NT Communication Guide
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To configure the converter in the Profibus network, download the description file
www.geindustrial.com/products/software/d485/P48509E5.zip and import it to the Profibus configuration
tool.
Follow instructions in the P485 manual while configuring the converter. The setup wizard incorporated in the
Enervista software will make the setup process much easier, but finally some manual corrections are needed.
Below are some notes specific to the connection with ComAp controllers.
The physical layer for Modbus communication is select table. The selected type (RS232/RS485) and speed
must be same in the P485 and controller, see Controller setup on page 62.
Use RS485 in case more controllers are connected to the P485.
A Device mentioned in the wizard represents a controller type (IG-NT, IM-NT, IS-NT). Once a device is
defined, more nodes of the same type (device) can be created easily.
A modbus network node represents a controller. The slave address must correspond to the Controller
address setpoint of the related controller.
See Modbus Connection (page 129) for details about Modbus, register numbers, sizes etc.
Use triggered update mode for writing objects (registers) to the controller. Never use cyclic update
mode!
8.7.3 Setup example (using wizard)
1. Select wizard
2. Select fieldbus type.
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