JIS B 9961 AMD 1:2015 Safety of machinery -- Functional safety of safety-related electrical, electronic and programmable electronic control systems (Amendment 1)
2015JIS B 9961 AMD 1:2015 Safety of machinery -- Functional safety of safety-related electrical, electronic and programmable electronic control systems (Amendment 1)
2008JIS B 9961:2008 Safety of machinery -- Functional safety of safety-related electrical, electronic and programmable electronic control systems