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ATR142 manual command over Modbus
Posted: 20/02/2019, 16:02
by user898
Is it possible to write the output command (SSR) percentage over modbus without causing EEPROM problems? Manually this is possible from the controller via parameter no 49 (automatic/manual) as described on the user manual. There is a workaround for Modbus access by means of parameter 22 (Output power limit), but this is not an option since constant parameter update will kill the EEPROM in one week or so.
Re: ATR142 manual command over Modbus
Posted: 21/02/2019, 12:27
by Pixsys tecnico 6
Hi,
You can use the Modbus register number 1009 (Heat Output Percentage), and number 1018 (Automatic/Manual selection). These registers don't write on EEPROM. Both Registers are R/W (there is an user guide mistake. We'll fix asap)
Best regards.
Re: ATR142 manual command over Modbus
Posted: 21/02/2019, 14:46
by user898
Many thanks! I can verify that it works like a charm. This fact makes this workhorse even more versatile.
(This same R/W analogy seems to ably also to registers 1108-1111.)