Inputs And Outputs; Radio Link Time-Out And Recovery (Non-Host Connected Systems) - Banner SureCross DX80 Product Manual

Device Register 8 (Hex)
Message Data Field
Code
[7:0]
[15:8]
00 80
01 00-FF
35 01
36 01
FE --

10.4 Inputs and Outputs

Some inputs or outputs are not working.
Option 1. From the Node, access the menu system and use manual scrolling mode within *RUN to freeze the I/O status on
the LCD display for the device in question. Verify that when the input device changes state or changes value, the LCD mir-
rors the behavior. If the Node is in a hazardous location, access the Node's I/O from the Gateway by changing the Gate-
way's right rotary dial to the Node number in question. For example, to view the I/O status of Node 3, move the Gateway's
right rotary dial to 3. The Gateway's LCD now scrolls through Node 3's I/O. To freeze the display on a particular I/O point,
double-click button 2. The autoscrolling on the Gateway stops at the *RUN screen. Single-click button 1 to advance
through the Node's I/O points.
Option 2. Verify the LCD on the output side mirrors the linked input's behavior. If the input device state LCD on the origi-
nation DX80 and the LCD on the destination DX80 behave the same, there may be a wiring issue or an interfacing prob-
lem. Consult the factory.
Option 3. Nodes will not sample inputs unless the Nodes are in sync with a Gateway. Verify your Node is in sync with its
Gateway.

10.5 Radio Link Time-Out and Recovery (Non-Host Connected Systems)

®
The SureCross wireless devices employ a deterministic link time-out method to address RF link interruption or failure. As soon as a
specific Node/Gateway RF link fails, all pertinent wired outputs are de-energized until the link is recovered (see component data sheet
for more information.) Through this process, users of Banner wireless networks can be assured that disruptions in the communications
link result in predictable system behavior.
The link time-out feature uses a fully-acknowledged polling method to determine the RF link status of each Node on the
network.
84
Description
Normal operation. Device message register contents 0x0080 indicates the particular
Node is synchronized to the Gateway. (Decimal value 128.) A value of zero (0) indi-
cates there is no device present.
Unknown message. The message was received correctly (correct checksum), but it is
not a recognized command. This type of message is usually caused by devices with
poor radio links or collocated networks that are not uniquely separated by binding co-
des and Network IDs. This message does not affect the performance of the network.
(Decimal values 256 through 511.)
Radio Device (polling/heartbeat) Timeout. (Decimal value 13569.) A Node is deter-
mined to be out of the wireless network based on the parameters defined for polling
or heartbeat. See the documentation in the UCT for polling or heartbeat parameters
and the timeout operation. When the least significant bit is on (1), an error condition
exists.
• Run site survey to determine the quality of the RF link. If no communications
exist between the Gateway and Node, verify the power at the Node and all
antenna connections. The blocking of RF communications may also be a result
of environmental conditions that may have changed.
• The battery of a battery powered Node may need to be replaced. Although
the LCD and device may appear functional, the battery may not have enough
capacity to handle the current requirements of RF communications.
Modbus time-out. A Gateway timeout (time of inactivity on the serial channel) was
detected. (Decimal value 13825.) When the least significant bit is on (1), an error
condition exists.
Modbus register 8 device messages are disabled. The Modbus register 8 clears or dis-
ables messages using the Gateway's Modbus register 15. (Decimal values 65024
through 65279.)
www.bannerengineering.com - tel: 763-544-3164
SureCross DX80 and Performance DX80 Product Manual
Rev. J