B&B Electronics Zlinx 485 - Manual (Page 30)

Modbus Basics
Manual Documentation Number: Zlinx485m-1808
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stored as 1xxxx (coil) addresses; analog inputs are converted to 12 bit binary values and
stored in 3xxxx (input register) addresses.
To configure the Zlinx 485 for Modbus mode:
1. Select the Configuration tab.
2. Select the Modbus option button.
3. In the Modbus Address box, type the Modbus address to be used. Modbus address 0
is reserved for master systems that do not support broadcasts.
The allowable range of Modbus addresses is from 1 to 247. The default Modbus
address is 1.
Figure 31. Configuration Tab with Default Values
Testing Modbus Mode Operation
Using a Modbus base module, a PC and Modbus simulation software (e.g. Modscan) you
can test the link and hardware, and investigate the operation of the Zlinx 485. Modscan is
a Windows application that simulates a Modbus master node. You can read from and
write to memory locations on the Zlinx 485. Modscan is available as a fully functional
time-limited demo from
www.win-tech.com
., and more information on the basics of
Modbus is available at
www.bb-elec.com
.