Honeywell Vertex M User Manual page 230

Risk of undetected communication loss – it is essential that external automation
equipment which communicate with the Vertex M monitor the "Heartbeat" byte 81.
(Or the low byte of word 40) A failure of the heartbeat to increment must be treated as
a complete loss of gas monitoring.
Risk of cyberattack – external fieldbus cables must have rigorous physical isolation
from public networks. Do not create a communications link between the fieldbus and
the public internet.
The PLC Ethernet interface may cease communicating or be damaged by voltage
surges. Restrict Ethernet cable runs to 98 feet. (30m).
In this appendix, the acronym "IP" has two meanings. In some contexts, it refers to the Internet
Protocol version 4 as defined by the Internet Engineering Task Force Request for Comment
791. In other contexts, it refers to the Common Industrial Protocol as defined by the Open
DeviceNet Vendor Association.
Commissioning a network sometimes requires the use of a third-party software tool. The three
ODVA protocols (DeviceNet, ControlNet, Ethernet/IP) require RSNetWorx or similar program.
Commissioning Profinet requires the use of Proneta or similar software.
Two styles of gateway are used, and the configuration steps needed are significantly different.
Some protocols use Anybus Communicator gateways with an article number in the form
ABC4***. A few use the older Anybus X-gateway with article numbers in the form AB7***. Both
are mounted on the DIN rail.
Vertex M
WARNING
CAUTION
CAUTION
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