Automationdirect.com Stellar SR44, User Manual

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6.5.4 – P-124 Offline Commands
The SR44 has a mechanism for carrying out common functions, or offline ones which take a long
time and require the SR44 to be off and disabled. Commands are carried out by writing various
values to a Command Register (parameter 124). For example, writing a 1 to P-124 using function
06 disables the starter.
Once a value has been written to this special register, further Modbus queries will receive a “slave
busy” error until the command execution is completed. If an error occurred during the execution
of the command (say the unit was not disabled before execution), then the Offline Command
failed flag will be set. If function 7 has been used to poll the SR44, then once the busy period is
over this flag is available in the returned status byte position 80h.
Parameter 124 Command Codes *
Value Command Active Meaning
1 Disable Starter Always
Stop the SR44 responding to start commands, remote or local.
If running the SR44 will stop immediately.
The status of any start signal is not changed.
2 Enable Starter Always The SR44 will respond to new or existing start commands.
3 Bus Starting Always The SR44 responds to start requests from the keypad / bus port.
4 Remote Starting Always The SR44 responds to start requests from the hardware input.
5 Reset Starter Always The SR44 is forced to a cold start.
6 Reset Trip Always Resets the SR44 to stopped and ready state.
7 Bus Start When Enabled If Starting = bus & unit is enabled, SR44 will start.
8 Bus Stop When Enabled SR44 will always stop.
9 Factory Default When Disabled
The working RAM is loaded with factory default values.
his may take up to 5 seconds.
10 Power On Default When Disabled The working RAM is loaded with the permanent store values.
11 Save RAM When Disabled
The working RAM is saved to the permanent store for future use.
This may take up to 5 seconds.
* Use only Function Code 06 for P-124 Offline Commands.
Chapter 6: Serial Communications
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019