AH500 Module Manual When some I/O module has a fault and the master is disconnected or stops, the DO and AO modules added to AHRTU-PFBS-5A are set as the above two figures shows. Besides, anyone of them can also be set separately. Take a DO module for example as below. 14-24 Name Setting Explanation rack 0x01 The number of the rack where the I/O module is (Rack number ranges from 1 to 8, 1 represents the main rack, 2~8 stand for extension racks and the slot number is 0~11.) slot 0x00 The number of the slot on the rack where the I/O module is. (Rack number ranges from 1 to 8, 1 represents the main rack, 2~8 stand for extension racks and the slot number is 0~11).
Output hold disable/enable Output hold options: Enable: the output of other I/O modules of AHRTU-PFBS-5A is held when some I/O module has a fault and the master is disconnected or stops running. Disable: the output of other I/O modules of AHRTU-PFBS-5A is cleared to 0 when some I/O module has a fault and the master is disconnected or stops running.