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+--- Thread: Modbus bit control over script (/showthread.php?tid=1744)
Modbus bit control over script - Thinklight - 23.11.2018
Hi,
Same ideas how can I control Modbus bit over script. Reading works for mee so I need write commands over Event script.
Code:
local adr1001 = mb:readregistervalue(1001, 'uint16')
grp.write('32/5/52', bit.band(bit.rshift(adr1001,8),0x1), dt.bool) -- Baseino filtravimo laikmatis jei abu isjungti
grp.write('32/5/53', bit.band(bit.rshift(adr1001,9),0x1), dt.bool) -- Filtravimas vyksta istisai
grp.write('32/5/54', bit.band(bit.rshift(adr1001,10),0x1), dt.bool) --Vonios filtravimo laikmatis jei abu isjungti
grp.write('32/5/55', bit.band(bit.rshift(adr1001,11),0x1), dt.bool) --Filtravimas vyksta istisaiRE: Modbus bit control over script - Daniel - 23.11.2018
Hi
As long it is register you have to build back the 2 byte and send it as register. Usually bit control is done via coil.
BR
RE: Modbus bit control over script - admin - 23.11.2018
You should also use modbus mapper proxy functions if you want to access same RS485 port from several scripts. Otherwise you will get random access errors. https://forum.logicmachine.net/showthread.php?tid=387&pid=1953#pid1953