After loading new ladder logic of Lm9030 in CPU 331,ladder coil not going high even input is on high logic. this happening in next 8 bits(B) in output module IC693MDL740 AND 940 also. Why? First 8 bits (A) working normal. I checked all things found ok, even replaced output module.

 

Output modules are typically powered with an 'outside' source independent of the PLC. If the output bits are high in logic but the output is NOT high. Verify that there is proper power going to the affected group of outputs. There is a wire diagram inside the module's transparent door.