
Watlow MicroDIN 2.1
Communications
Setup
Chapter Two:
Communications Setup
2
Communications Overview
EIA-485 Network ............................... 2.2
Modbus
™
Protocol ............................. 2.2
Set Address/Baud Rate .......................2.2
Serial Data Format ............................. 2.2
Wiring Tasks ...................................... 2.2
Communications Software ................. 2.2
EIA-485 Network
Elements of a MicroDIN 485 Network 2.3
PC Connection via 232/485 Converter 2.3
Special Case 485 Considerations ....... 2.4
Termination Resistor .......................... 2.4
Pull-Up and Pull-Down Resistors ...... 2.4
Modbus Protocol
RTU ................................................... 2.5
Access via Registers .......................... 2.5
MicroDIN Supports... ......................... 2.5
Modbus
™
Register Table .................... 2.6
DIP Switches Set Address/Baud Rate
MicroDIN DIP Switch Table ............... 2.7
Required Parameters Setup ............... 2.8
Serial Data Format
Data Format Table .............................. 2.9
Wiring Tasks
Wiring Task List ................................. 2.9
Communications Software
Watlow’s WatLink .............................. 2.9
Other Software Options ..................... 2.9
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