             Host Status (C/X and EPC/X Systems Only)

The DPA program provides several status and error counters to aid you in
monitoring activity between the host adapter and concentrators, and 
diagnosing possible communication problems.

Several of the counters increment steadily under normal conditions.  An 
incrementing counter does not necessarily indicate a problem.  For 
example, if a concentrator is turned off, several counters will 
increment.  When the concentrator is turned back on, those counters will
stop incrementing.

If any counters that are usually idle begin to increment steadily, 
perform the recommended tests described for that counter.  Call Digi
Technical Support if the counters continue to increment steadily after 
performing the recommended tests.
Activity Counters
    RECEIVE1
        The number of times the host adapter processed a request from a 
        concentrator, and one packet was received.  Under idle 
        conditions, RECEIVE1 will increment, representing the "heartbeat"
        of the concentrators communicating with the host.

    RECEIVE2 through RECEIVE4
        The number of times the host adapter processed a request from a 
        concentrator, and two, three, or four packets were received.

    RECEIVE5
        The host adapter is 100% busy if RECEIVE5 is incrementing.  Users
        may experience slower response time.  Monitor EC (Error Count) on
        the concentrator front panel.  The Digi product in use is 
        being maximized.  Consider adding another host adapter, or 
        advance to the EPC/X system if you are currently using the 
        standard C/X product.

    TRANSMIT
        The number of data packets transmitted from the host.
        Under idle conditions, the TRANSMIT counter will increment.  This
        is the "heartbeat" of the host checking the status of 
        communications to the concentrators.  Under normal operating 
        conditions,m the TRANSMIT counter will increment.

Sync Counters
*For diagnostic information see the concentrator Installation Guide.
     ERR_UFRAM
        The host adapter received an incomplete packet.  Check the 
        physical hardware configuration to ensure a stable environment. 
        Check for other incrementing counters.  
    ERR_ABSTAT 
        The host adapter received a bad data packet, and discarded it.  
        Check for concentrator "down" [DN] status.  Check the physical 
        hardware configuration.  If the ERR_ABSTAT counter is constantly
        incrementing, run the concentrator diagnostics*.  Call Digi
        Technical Support.

    ERR_INC
        The host adapter received an incomplete data packet.  Check the 
        physical hardware configuration.  If this counter is constantly 
        incrementing, call Digi Technical Support.

    ERR_CRC
        The host adapter received a packet with a CRC error.  Run the 
        concentrator sync line diagnostic tests*.  If this counter is 
        constantly incrementing, call Digi Technical Support.
    ERR_DATA 
        The host adapter received a packet with an error found in the 
        data.  This will cause other counters to increment.  Check sync 
        line connections.  Run the concentrator sync line diagnostic 
        tests*.  If this counter is constantly incrementing, call 
        Digi Technical Support.

    ERR_NACK
        The host adapter received a negative acknowledgement from the 
        concentrator for one of its messages.  Check sync line 
        connections.  Run C/X host adapter diagnostics*.  If this counter
        is constantly incrementing, call Digi Technical Support.

    *For diagnostic information see the concentrator Installation Guide.


Saturation Counters
    ERR_TBUF
        The transmit buffers on the host adapter are full.  The data is 
        not getting out to the ports fast enough.  Also monitor RECEIVE1
        through RECEIVE5 and TRANSMIT counters.

    ERR_FIFO
        The host adapter is receiving more data than it can handle.  Also
        monitor RECEIVE5.

    ERR_ORUN
        The host adapter is receiving too much data; the host is 100% 
        busy.  The Digi product in use is being maximized.  Consider
        adding another host adapter, or advance to the EPC/X system if 
        you are currently using the standard C/X product.

    ERR_TBUSY
        The number of times the host adapter tried to transmit data when
        the transmitter was busy.  Also monitor RECEIVE counters.

    ERR_RITEM
        The receive buffer on the host adapter is full; the host adapter
        is 100% busy.  Also monitor the ERR_ORUN counter.

FEP Counters

    ERR_REC0
        The number of times the host adapter received a request from a 
        concentrator, but no packets were received.  If the environment 
        is stable and no other counters are incrementing call Digi
        Technical Support.

    ERR_ADDR
	The host adapter received a message that contains an invalid node
        number.  This is not a physical node number error, but a software
        node number error.  If this counter is constantly incrementing, 
        call Digi Technical Support.

    ERR_MTYPE
        The host adapter received a message with a bad message type.  If
        this counter is constantly incrementing, call Digi Technical
        Support.

    ERR_MSIZE
        The host adapter received a message with a bad length.  If this 
        counter is constantly incrementing, call Digi Technical 
        Support.

    ERR_RID
        The host adapter received a message with an out-of-sequence 
        message ID.  This is not a physical node number error, but a 
        software node number error.  If this counter is constantly 
        incrementing, call Digi Technical Support.

    ERR_TID
        The host adapter sync line transmit sequence number is out of 
        sequence.  If this counter is constantly incrementing, call 
        Digi Technical Support.

    ERR_PING
        The host adapter received a sync line ping message when not in 
        ping mode.  If this counter is constantly incrementing, call 
        Digi Technical Support.

Hardware Counters
    ERR_ABREC
        The host adapter aborted receiving a packet.  Run C/X host 
        adapter diagnostics.  If a hardware problem is detected, try a 
        different host adapter.

    ERR_URUN
        The host adapter transmitted an incomplete packet.  Run C/X host
        adapter diagnostics.  If a hardware problem is detected, try a 
        different host adapter.

    ERR_CONC
        A message sent to the concentrators was sent back to the host 
        adapter.  A concentrator is down.  Back up one screen in DPA to 
        check for "DN" status on a concentrator.  Check the power on the
        concentrator and reset the concentrator.  If the counter is still
        incrementing, try a different concentrator.

    ERR_CHECK
        The host adapter received an incomplete status packet.  Run 
        concentrator diagnostics.  If a hardware problem is detected, 
        try a different concentrator.
