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TCP settings
Port
TCP port number the Modbus TCP server will be listening on - typically 502. Note that the unit ID is
not evaluated in TCP server mode.
Keep-alive
enable
Enables the TCP keep-alive mechanism for connections from clients. The keep-alive mechanism is
used to detect dead connections. When a dead connection is detected, resources consumed by this
connection can be released.
Keep-alive
timeout
Idle time in seconds after which the first keep-alive probe will be sent
Keep-alive
interval
Interval in seconds in which keep-alive probes will be sent
Keep-alive count
Number of keep-alive probes that will be sent before closing the connection
RTU settings
Interface
Serial interface the Modbus RTU Slave should run on. This selection is only available if your Edge
gateway device features more than one serial interface.
Address
RTU slave's address
RTU mode
Defines the mode for Modbus RTU. There are three possible options:
•
RS232 with RTS/CTS flow control
•
RS232 without flow control
•
RS485
Baud rate
Defines the baud rate for Modbus RTU
Parity
Defines the parity (and stop bits) for Modbus RTU. There are three possible options:
•
None (2 stop bits)
•
Odd
•
Even
Event Log Messages
The following section describes the messages that the Modbus Slave driver may log to the Event
Log. All Messages are prefixed with the text
Modbus Slv driver:
.
•
Portal communication error
<error code>
A general error has occurred while exchanging data with the portal. Possible error codes:
-2
Out of memory
-3
The internal data queue has overflown, because data was produced faster than it could be processed.
If you see an error code that is not on the above list, please contact the customer support.
M-Bus
If your Edge gateway device features an M-Bus interface, you can configure it via this form.
At the top of the page you can configure several settings.
Baud rate
Baud rate at which the M-Bus will operate.
Addressing
mode
Mode used to address the M-Bus slave devices (Primary, secondary or reverse secondary).
Append new
devices to
the list
When this option is set, the scan results are appended to the saved List.
Maximum
number of
pages per
device
Via this option you can limit the number of pages to be requested from each device. Typically the first
page contains the most important values.
Maximum
number of
Via this option you can limit the number of values to be read from each device. Note that the total
number of values read from all devices is limited to 4096 and that at least one value will be read from
any device. The number of devices to be read is limited to 64.
Anybus Edge Gateway Reference Guide
SCM-1202-154 1.0 en-US