– 4 –Pin No. Direction Compatibility ModeSignal NameNibble ModeSignal Name In nInit nInit Out nFault nDataAvail/Data0,4 EXT GND —4 Out Compulsion Status —5 Out Logic High (+5V) —6 In nSelectIn 4ActiveNote: . The prefix “n” on the signal name refers to low active signals.If the host does not have any one of the signal lines listed above, two-way com-munication fails.. For interfacing, signal lines should always use twisted pair cables with the returnsides connected to the signal ground level.. Cautions when resetting the printer using the nInit signal (# pin).Reset can be made from # pin (nInit signal) of the interface by memory switchsetting. (Factory setting is reset.)In addition, when reset has been enabled by # pin (nInit signal), it can be set toreset when the following conditions have been established: memory switch set-tings for 6-D and 6-E have been changed, #6 pin (nSelectIn/4 active signal)is low, and # pin (nInit signal) is low.For instructions on setting the memory switch, please refer to the separate Speci-fication Manual.4. During factory output, IFEE 4 printer device ID reply will be “Invalid.” To getthe device ID, change memory switch 6-C to “Valid.” For instructions on settingthe memory switch, please refer to the separate Specification Manual.Parallel interface connector (printer side) This connector mates with an Amphenol57-30360 connector