Honeywell CIU 888 - Page 126

Getting Started
Part No.: 4417584_Rev12 Configuration Manual
CIU 888 3 - 96
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Modbus Server Enable This indicates enable / disable of the Modbus TCP
Server on the Ethernet port. That is, based on the need
the user shall enable / disable Modbus TCP/IP server
on a particular Ethernet port.
Modbus Port Number This indicates the software port number in which Mod-
bus server would be enabled. The default port number
is 502.
Secure Modbus server
enable
This would enable / disable the secure Modbus TCP
Server on the ethernet port.
0 - Modbus TCP/IP server disabled
1 - Modbus TCP/IP server enabled
Modbus Server Protocol
Type
This indicates the Modbus server protocol type.
Supported protocols are
Modbus TCP/IP
Modbus Server Idle time-
out
This indicates the idle time period (no Modbus mes-
sage exchanges) in seconds after which a client con-
nection would be closed by the Modbus TCP/IP server.
Value is from 10 to 65535. Default is 60.
IP filtering This enables / disables IP address filtering by the Mod-
bus TCP/IP server. If enabled, Modbus TCP/IP server
only accepts connections from the IP addresses / range
configured in "IP addresses / Range" option.
Allowed IP Addresses /
Range
This indicates the IP address list (IP addresses / range)
from which connection is accepted by the Modbus TCP
server. Client connections from any other IP addresses
apart from that configured here would be rejected by
the Modbus TCP/IP server.
The user shall be able to configure multiple IP
addresses / ranges.
IP addresses Format: IP addresses separated by
comma.
Example: 10.70.50.3,10.70.50.5,10.70.50.10
IP address ranges Format: IP address range is speci-
fied with "-" and multiple IP address ranges are sepa-
rated by comma.
Example: 10.70.50.3-10.70.50.7,10.70.50.100-
10.70.50.105
Unit Id Filtering This enables / disables Unit Id (Unit identifier) filtering
by the Modbus TCP/IP server. If enabled, Modbus
TCP/IP server only responds to Modbus requests with
Unit Id (Unit Identifier) from the Unit Id list configured in
"Unit Ids" option.
Parameters Configuration options