How can I read %I/Q or %M on my M221, M241, M251, M262, M258 or LMC058 controller using Modbus ?
2 cases have to be considered: M221 or (M241, M251, M262, M258 and LMC058).
M221 :
%M (internal bits) can be accessed using function codes from the table below (extracted from Machine Expert - Basic online help).
Note that %I (physical inputs) and %Q (physical outputs) can not be accessed directly by Modbus.
M241, M251, M262, M258 and LMC058:
%M (internal bits) cannot be accessed by Modbus.
But %I (physical inputs) and %Q (physical outputs) can be accessed using function codes from the table below (extracted from Machine Expert online help).
M221 :
%M (internal bits) can be accessed using function codes from the table below (extracted from Machine Expert - Basic online help).
Note that %I (physical inputs) and %Q (physical outputs) can not be accessed directly by Modbus.
M241, M251, M262, M258 and LMC058:
%M (internal bits) cannot be accessed by Modbus.
But %I (physical inputs) and %Q (physical outputs) can be accessed using function codes from the table below (extracted from Machine Expert online help).
Udgivet til: Schneider Electric Danmark
Brug for hjælp?
Produktvælger
Find hurtigt og nemt de rette produkter og det rette tilbehør til dine anvendelser.
Få et tilbud
Start din salgsforespørgsel online, så vil du blive kontaktet af en ekspert.
Find forhandler
Find den nærmeste Schneider Electric-distributør.
Hjælpecenter
Find supportressourcer til alle dine behov på ét sted.