As a result, it is possible, for example, when the control unit 12 establishes {HEAD ~ a problem} or the like at a specific field bus module 18, to activate the corresponding address connector 46 which is pushed into {TAIL ~ the field bus module} 18 and cause the display unit 56 to show a specific signal 
As a result , it is possible , for example , when the control unit 12 establishes { HEAD ~ a problem } or the like at a specific field bus module 18 , to activate the corresponding address connector 46 which is pushed into { TAIL ~ the field bus module } 18 and cause the display unit 56 to show a specific signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH