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bacrp.1
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.\" Process this file with
.\" groff -man -Tascii bacrp.1
.\" Contact <skarg@users.sourceforge.net> to correct errors or ommissions
.TH bacrp 1 "July 2008" "0.4.5" "BACnet Stack at SourceForge Tool Manual"
.SH NAME
bacrp \- send BACnet ReadProperty service request to BACnet devices
.SH SYNOPSIS
.B bacrp device-instance object-type object-instance property [index]
.SH DESCRIPTION
.B bacrp uses the BACnet ReadProperty service request to elicit
a ReadPropertyAck or BACnet Error service response from a BACnet
device on the network. WhoIs and I-Am are used for device binding.
The property value or error message is returned to stdio.
.SH OPTIONS
.IP device-instance
Device object instance number that you are trying to
send a ReadProperty service request. The value should be in
the range of 0 to 4194303.
.IP "object-type"
The object type is the integer value of the enumeration
BACNET_OBJECT_TYPE in bacenum.h. It is the object
that you are reading. For example if you were
reading Analog Output 2, the object-type would be 1.
.IP "object-instance"
This is the object instance number of the object that
you are reading. For example, if you were reading
Analog Output 2, the object-instance would be 2.
.IP "property"
The property is an integer value of the enumeration
BACNET_PROPERTY_ID in bacenum.h. It is the property
you are reading. For example, if you were reading the
Present Value property, use 85 as the property.
.IP "index"
This integer parameter is the index number of an array.
If the property is a BACnetARRAY, individual elements can
be read. If this parameter is missing and the property
is an array, the entire array will be read.
.SH EXAMPLES
If you want read the Present-Value of Analog Output 101
in Device 123, you could send the following command:
$ bacrp 123 1 101 85
If you want read the Priority-Array of Analog Output 101
in Device 123, you could send the following command:
$ bacrp 123 1 101 87
If you want read the length of Priority-Array of Analog
Output 101 in Device 123, you could send the following command:
$ bacrp 123 1 101 87 0
.SH FILES
.I address_cache
.RS
A cache that is read for static binding. See
.BR address_cache (5)
for further details.
.SH ENVIRONMENT
.IP BACNET_IP_PORT
If non-null, the number of the UDP port for BACnet/IP datalink.
The default UDP port number is 47808 (0xBAC0).
.IP BACNET_IFACE
If non-null, the device name for the datalink.
The default is "eth0".
.IP BACNET_BBMD_PORT
If non-null, the number of the UDP port that the BBMD is using.
The default UDP port number is 47808 (0xBAC0).
Used for BACnet/IP datalink only.
.IP BACNET_BBMD_TIMETOLIVE
If non-null, the number of seconds used in the Foreign Device
Registration. A 16-bit unsigned value of 0 to 65535 is expected.
The default number of seconds is 65535 (0xFFFF).
Used for BACnet/IP datalink only.
.IP BACNET_BBMD_ADDRESS
If non-null, the IP address of the BBMD that is handling the
Foreign Device Registration. If this environment variable is
missing or NULL, then Foreign Device Registration does not occur.
Used for BACnet/IP datalink only.
.IP BACNET_MAX_INFO_FRAMES
If non-null, the Max-Info-Frames value between 1 and 255.
The default number of frames is 1.
Used for BACnet MS/TP datalink only.
.IP BACNET_MAX_MASTER
If non-null, the Max-Master value between 1 and 127.
The default Max-Master is 127.
Used for BACnet MS/TP datalink only.
.IP BACNET_MSTP_BAUD
If non-null, a value baud rate of 9600, 19200, 38400, 57600,
and 115200.
The default baud rate is 9600.
Used for BACnet MS/TP datalink only.
.IP BACNET_MSTP_MAC
If non-null, the MS/TP MAC address value between 0 and 127.
The default MAC address is 0.
Used for BACnet MS/TP datalink only.
.SH DIAGNOSTICS
The following diagnostics may be issued on stderr:
device-instance=x - it must be less than 4194304
object-type=x - it must be less than 1024
object-instance=x - it must be less than 4194304
property=x - it must be less than 4194304
Error: TSM Timeout!
Error: APDU Timeout!
.SH BUGS
No bugs are known to exist at this time.
.SH AUTHOR
Steve Karg <skarg@users.sourceforge.net>
.SH "SEE ALSO"
.BR bacarf (1),
.BR bacawf (1),
.BR bacdcc (1),
.BR bacepics (1),
.BR bacrd (1),
.BR bacserv (1),
.BR bacts (1),
.BR bacucov (1),
.BR bacwh (1),
.BR bacwp (1),
.BR address_cache (5)