Siemens SIMATIC TIWAY 1 - Manual (Page 149)

HOST COMMAND SET REFERENCE
UNILINK HOST ADAPTER 5–64
USER MANUAL
5.6.8 Report Network Manager Secondary Statistics — 37
The REPORT NETWORK MANAGER SECONDARY STATISTICS command
returns statistical information for a specified secondary device. The statistics
reflect the network activity between the secondary and the Network Manager,
which includes transactions from one or all HIUs on the network. The counters
are not incremented after reaching their maximum value and must be reset
explicitly.
Command: 37 aa (rr)
Response: 37 aa (bbbb cccc dddd eeee ff)
Usage: PERFORMANCE
Modes: NM
Parameters:
aa The secondary device address. If set to FF and ‘rr’ is set to 01, the
statistics counters for all secondaries will be reset.
rr The reset counters code.
00 = Do not reset the counters.
01 = Reset the counters, but do not return any statistics. The
address field will be returned.
bbbb The total number of TIWAY I HDLC commands (I–Frames, RRs,
and others) sent to the secondary by the Network Manager. This
count does not include HDLC commands sent to retry an HIU.
cccc The total number of TIWAY I HDLC I–Frames sent to the
secondary by the Network Manager.
dddd The total number of network errors associated with the
secondary including bad CRCs, aborts, timeouts, and the loss of
RS–232–C/RS–423–A control signals.
eeee The number of TIWAY I HDLC errors, including command
rejects (FRMR), invalid HDLC responses, and sequence errors.
This number may reflect errors logged because a BROADCAST
NETWORK DATA TRANSFER command was issued. These
errors are logged because the POLL command is not available to
clear the outstanding frame.
ff The total number of times the Network Manager changed to
another channel due to errors. This parameter will be zero if
redundant media is not available.