Automationdirect.com Stellar SR44, User Manual

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Contents of this Chapter...
6.1 – Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
6.2 – Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
6.3 – Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–3
6.4 – Parameter Memory Addresses . . . . . . . . . . . . . . . . . . 6–4
6.5 – Serial Communication to SR44 . . . . . . . . . . . . . . . . .6–13
6.5.0 – Parameter Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–13
6.5.1 – Reading Holding Registers (Modbus Function 03) . . . . . . . . . . . . . 6–14
6.5.2 – Writing Single Coil (Modbus Function 05) . . . . . . . . . . . . . . . . . . . 6–15
6.5.3 – Writing Single Register (Modbus Function 06) . . . . . . . . . . . . . . . . 6–16
6.5.4 – P-124 Offline Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17
6.5.5 – Read Exception Status (Modbus Function 07) – Starter 01 . . . . . . . 6–18
6.5.6 – Returned Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18
6.7 – Example PLC Communications Programs . . . . . . . . . 6–19
6.7.1 – CLICK PLC Example Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19
6.7.2 –
Direct LOGIC PLC Example Program . . . . . . . . . . . . . . . . . . . . . . . . 6–25
6.7.3 – Productivity3000 PLC Example Program . . . . . . . . . . . . . . . . . . . . . 6–30
NOTE: SR44 soft starters have been discontinued. Please consider SR55 soft starters as a replacements.
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