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Miri Technologies, 2 Fellowship Road, Gnangara, Western Australia 6077 | Tel: +61 89 409 8998 | www.miri.com.au
2. Wiring Detail
The expansion modules are driven from the RS485
port on the AD2006+ module, or via an M232-485
converter if using the RS232 port of an AD2000
module.
Any combination of up to 32 expansion modules can
be driven from one AD2006+ module.
Standard RS485 parameters apply to the expansion
module bus and thus the modules do not have to be
located in close proximity to the AD2006+ but can be
can be up to 1.5km from the AD2006+ telemetry
module.
An option to run Modbus on the RS485 bus is
provided. This means that the expansion modules
can be operated in conjunction with third party
Modbus devices on a multi-drop RS485 bus.
Note: The protocol selection in MiriMap must match
the DIP switch settings on the expansion modules.
The other settings selected in software are typically:
• Interface - Expansion Modules
• Polling – Continuous
• RTS during Tx must be checked
• Baud rate - 38.4k (default)
When using an AD2000 RS232 port, you will require
an M232-485 converter connected as shown below.
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