Building Automation System Communication; Communication Problems; Hardware Problems; Web Interface Problems - Carrier AquaEdge 23XRV Controls Operation And Troubleshooting

Building Automation System Communication

The PIC6 controller has onboard interface capability to commu-
nicate with building automation systems without the need for a
third party translator. The controller can communicate via the
following protocols: BACnet MS/TP (Master-Slave/Token-
Passing), BACnet/IP (internet protocol), Modbus RTU (remote
terminal unit) and Modbus TCP/IP (Transmission Control Proto-
col/Internet Protocol).
Establishing communication between a site building automation
system and the PIC6 controller is not part of the standard Carrier
startup process. If it is necessary to support chiller control integra-
tion with the site building automation system, it will require a re-
quest from the Carrier Service Office/Distributor for a control
technician to complete this task and additional charges will apply.
Both BACnet and Modbus configuration menus can be selected
from System Configuration Menu.
BACnet MS/TP and Modbus RTU interface with PIC6 Port J8.
BACNET MS/TP
Adjust MS_TP MAC address. The MAC (media address control),
MS_TP Baud Rate as required and keep MS_TP Max Masters as
low as possible to limit the associated bandwidth with master poll-
ing. See Fig. 66.
Fig. 66 — BACnet MS/TP
BACNET IP
Adjust IP Config and DNS servers for proper communication and
if an IP BACnet Broadcast Management Device (BBMD) is uti-
lized configure this as well. Select Reboot to configure the select-
ed parameters. See Fig. 67.
Fig. 67 — BACnet IP
MODBUS RTU
Select Baudrate, parity, stop bit, units, Register Bit Mode, Real
Type, Swap Endian and click Reboot. See Fig. 68.
Fig. 68 — Modbus RTU
MODBUS TCP
Adjust IP Config and DNS servers for proper communication.
Adjust TCP Port Number, Units, Register Bit Mode, Real Type,
Swap Endian as required and click Reboot to configure. See
Fig. 69.
Fig. 69 — Modbus TCP
TOUCH SCREEN CALIBRATION
Depending on the user and the position of the panel, it may be
necessary to calibrate the touch screen if the cursor does not
move precisely with the user's touch. When the user presses and
holds an inactive part of the screen for 10 seconds, the screen
will turn black with white text displaying "Calibrating Touch
Screen" and white cross hairs. Touch the center of the cross-hair
sight with a touch pen or similar blunt-ended stylus (do not use a
metal object). When the cross-hair sight is touched, it moves to a
new position; touch the center of the cross hairs again. When all
positions have been configured, the calibration is complete and
the screen returns to the Home Screen.

COMMUNICATION PROBLEMS

Hardware Problems

See Table 12 for potential communication issues caused by hard-
ware problems.

Web Interface Problems

See Table 13 for potential communication issues caused by web
interface issues. The intranet site of the unit is the IP address (see
Unit IP Address on page 34).
NOTE: The unit cannot automatically obtain the network parame-
ters via a DHCP server.
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