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).
Released for: Schneider Electric UK










Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Find support resources for all your needs, in one place.