3.1Before You Start
3.1.1Models Covered in This Chapter
This chapter covers the configuration process for the following models:
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| Operating | Modbus Plus |
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| Mounting | Power | Network | Serial | Serial |
Part Number | Method | (Nominal) | Cable | Ports | Protocol |
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NW±BM85±000 | Panel or Shelf | 115/230 Vac | Single | Modbus | ASCII or RTU |
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NW±BM85C002 | Panel or Shelf | 115/230 Vac or | Single or Dual | Modbus | ASCII or RTU |
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| 24 Vdc |
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NW±BM85D008 | 19 in Rack | 125 Vdc or | Single or Dual | Modbus | ASCII or RTU |
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| 24 Vdc |
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3.1.2An Overview of the Configuration Process
The BM85 requires the setup of internal configuration parameters for each port that you will use in your application. The unit conCtains a non'volatile memory that stores the port configurations, even when operating power is removed.
You must set the port configurations using a serial terminal (or a PC with a terminal emulation program) connected to one of the BM85 ports. The BM85 does not have to be connected to the Modbus Plus network. A switch is provided on the BM85 to enable the unit to be configured.
If the unit is already installed at its site, you can configure it there. You can also do the configuration prior to installing the unit at its site, then transport the configured unit to the site and install it.
You must also set the Modbus Plus node address into a set of switches on the BM85 rear panel.
Caution:"You must complete the internal configuration of the BM85 before making the unit active in your application both on the Modbus Plus network and at its serial ports
If you are installing a BM85 that was previously configured for another application another network or a different node the unit will still be retaining its previous configuration setup You must not connect the unit into the current application and apply operating power to the unit until you have reconfigured it for the current application
26 Configuring the Modbus Models
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