Technical data

62 OM 1191
Embedded Fieldbus
AV26 MBOX DATA
This object holds the mailbox function’s parameter value – a value that was read, or is to be written.
See BV15 and BV16.
None W
AV27 EXT PID STPT
This object sets the External PID controller setpoint. The corresponding drive parameter is 4211.
Control requires parameter 4210, PID SETPOINT SEL, value = 19 (INTERNAL).
Percent C
NOTE: For Present Value Access Types, R = Read-only,
W = Writeable, C = Commandable. Commandable
values support priority arrays & relinquish defaults.
BACnet Quick-Start Sequence
ThefollowingstepssummarizetheprocessforenablingandconguringBACnetontheMD5:
1. EnableBACnetprotocol:Setdriveparameter9802,
COMM PROTOCOL SEL = BACNET (5).
NOTE: If you cannot see the desired selection on the panel,
your drive does not have that protocol software in the
application memory.
— Toconrmthisselection,readdriveparameter5301,
EFB PROTOCOL ID. It should read x5xx (where “x”
is any value).
2. Place the BACnet channel in “reset”: Set drive
parameter 5302, EFB STATION ID = 0.
— This setting holds the BACnet communication
channel in reset while remaining settings are
completed.
3. DenetheMS/TPbaudrate.
— Set drive parameter 5303, EFB BAUD RATE =
appropriate value.
4. DenetheDeviceObjectInstanceID.
— Todeneaspecicdeviceobjectinstancevalue,
use drive parameters 5311 and 5317 (object instance
values must be unique and in the range 1 to
4,194,303).
— To use the drive’s MS/TP MAC ID as the device
object instance value, set drive parameter 5311 and
5317 = 0.
— BACnet requires a unique Device Object ID for each
device on the BACnet network.
5. DeneauniqueMS/TPMACID.Setdriveparameter
5302, EFB STATION ID = appropriate value.
— Once this parameter is set to a non-zero value,
current BACnet settings are “latched” and used for
communication until the channel is reset.
— In order to participate in MS/TP token passing, the
MACIDusedmustbewithinthelimitsdenedby
other masters’ “Max Master” property.
6. ConrmproperBACnetcommunication.
— When BACnet communication is operating properly,
drive parameter 5316, EFB PAR 16 (the MS/TP token
counter), should be continually increasing.
— Drive parameter 5306, UART ERRORS, should be
stable. (With autobaud detection, this parameter may
increase until the proper baud rate is detected.)
7. ConguretheDeviceObjectName.
— BACnet requires a unique name for each device on
the BACnet network. Write the Object Name of the
Device Object of the drive to a unique text string
using the operator workstation or software tool
capable of writing BACnet properties. The Object
NamecannotbemodifiedwiththeDaikin
display
panel and only the Device Object name is writable
in this product. We do not support writing of
Device Description.