is it possible to commutate from Slave to master in MODBUS Protocol Details:I want to use S7 200 in MODBUS on Slave Mode .When it detects that his Master is absent , It must commutate in Master Mode to replace his XMaster in The networks.
so I used the MODBUS library and Microwin sp5.
my problem consiste of:
if the S7 200 comutate from Slave to Master Mode the comunication is blocked.
the cross-reference has show that the maker of the subroutine MBUS_CTRL has used the SM0.1.
so I can call this subroutine in my application one time but I like the PLC always call them when it commutate in master mode . I can't access to this subroutine because it is protected by password.
I want to change this subroutine in order to change the SM0.1 out the subroutine
so I used the MODBUS library and Microwin sp5.
my problem consiste of:
if the S7 200 comutate from Slave to Master Mode the comunication is blocked.
the cross-reference has show that the maker of the subroutine MBUS_CTRL has used the SM0.1.
so I can call this subroutine in my application one time but I like the PLC always call them when it commutate in master mode . I can't access to this subroutine because it is protected by password.
I want to change this subroutine in order to change the SM0.1 out the subroutine