.TH "mbusd" 8 "26 October 2003" "mbusd @VERSION@" .SH NAMEmbusd \- MODBUS/TCP to MODBUS/RTU gateway server.SH SYNOPSIS.B mbusd.RB [ -h ].RB [ -d ].RB [ -v.IR level ].RB [ -L.IR name ].RB [ -p.IR name ] .RB [ -s.IR value ] .RB [ -P.IR number ] .RB [ -C.IR number ].RB [ -N.IR number ] .RB [ -R.IR value ] .RB [ -W.IR value ] .RB [ -T.IR value ] .SH DESCRIPTION\fImbusd\fR is MODBUS/TCP to MODBUS/RTU gateway server (currently master mode only is supported)..SH OPTIONS.IP \fB-h\fRUsage help..IP \fB-d\fRInstruct \fImbusd\fR not to fork itself (non-daemonize)..IP "\fB-v \fIlevel\fR"Specifies log verbosity level. 0 enables logging of errors only, 1 also enables warnings and 2 enables information messages.If \fImbusd\fR was compiled in debug mode, valid log levels is up to 9, where log levels above 2 forces logging of information about additional internal events..IP "\fB-L \fIname\fR"Specifies log file name. Value '-' forces log data output to STDOUT only if \fB-d\fR switch was given..IP "\fB-p \fIname\fR"Specifies serial port device name..IP "\fB-s \fIvalue\fR"Specifies serial port speed..IP "\fB-P \fInumber\fR"Specifies TCP port number..IP "\fB-C \fInumber\fR"Specifies maximum number of simultaneous connections..IP "\fB-N \fInumber\fR"Specifies maximum number of request retries. 0 - no retries..IP "\fB-R \fIvalue\fR"Specifies pause between requests in miliseconds..IP "\fB-W \fIvalue\fR"Specifies response wait time in miliseconds..IP "\fB-T \fIvalue\fR"Specifies connection timeout value in seconds. 0 - no timeout..SH NOTESBecause MODBUS RTU protocol have situations which can't straightforwardly translated into MODBUS/TCP protocol entities, \fImbusd\fR extends standard excepton codes set.In case of situation when \fImbusd\fR received response with invalid CRC and can't correcterror by re-request, it return MODBUS/TCP packet with exception code 128. In case of situation when \fImbusd\fR can't receive response from MODBUS RTU device (e.g. addressed controller is not present on the network), it return MODBUS/TCP packet with exception code 129..SH FILES.PPThe default location of the \fImbusd\fR log file is:.PP/var/log/mbusd.log.SH BUGSBroadcast messaging on MODBUS network isn't supported.Please send bug reports to author..SH AUTHORVictor Antonovich <avmlink@vlink.ru>..SH LICENSEThis program is distributed under the BSD-like license, included ineach source file. See also COPYING file in the installation directory.