HMS Networks Anybus Communicator ABC3000 Startup Manual page 16

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Anybus Communicator - PROFIBUS to Modbus Rotary Switch Settings
RTU/Serial
Example 1. To set the node address 12 hex = 18 dec
1. The rear rotary switch A is not used, ensure that it is set to 0.
2. Set the center rotary switch B to 1 hex.
3. Set the front rotary switch C to 2 hex.
The center rotary switch B 1 hex = 1 dec and the front rotary switch C 2 hex = 2 dec.
The node address expressed in decimal numbers is therefore 16 x 1 + 2 = 18.
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