Services Modbus gateway
IX30 User Guide
567
l
A single IP address or host name.
l
A network designation in CIDR notation, for example, 192.168.1.0/24.
l
any: No limit to IPv4 addresses that can access the web administration service.
d. Click again to list additional IP addresses or networks.
n
To limit access to specified IPv6 addresses and networks:
a. Click IPv6 Addresses.
b. For Add Address, click .
c. For Address, enter the IPv6 address or network that can access the device's web
administration service. Allowed values are:
l
A single IP address or host name.
l
A network designation in CIDR notation, for example, 2001:db8::/48.
l
any: No limit to IPv6 addresses that can access the web administration service.
d. Click again to list additional IP addresses or networks.
n
To limit access to hosts connected through a specified interface on the IX30 device:
a. Click Interfaces.
b. For Add Interface, click .
c. For Interface, select the appropriate interface from the dropdown.
d. Click again to allow access through additional interfaces.
n
To limit access based on firewall zones:
a. Click Zones.
b. For Add Zone, click .
c. For Zone, select the appropriate firewall zone from the dropdown.
See Firewall configuration for information about firewall zones.
d. Click again to allow access through additional firewall zones.
10. (Optional) Enable Send broadcast messages to configure the gateway to send broadcast
messages to this client.
11. For Response timeout, type the maximum time to wait for a response to a message.
Allowed values are between 1 millisecond and 700 milliseconds, and take the format
numberms.
For example, to set Response timeout to 100 milliseconds, enter 100ms. The default is 700ms.
12. Click to expand Modbus address filter.
This filter is used by the gateway to determine if a message should be forwarded to a
destination device. If the Modbus address in the message matches one or more of the filters,
the message is forwarded. If it does not match the filters, the message is not forwarded.
13. For Address or address range, type a Modbus address or range of addresses. Allowed values
are 1 through 255 or a hyphen-separated range.
For example, to have this client filter for incoming messages that contain the Modbus address
of 10, type 10. To filter for all messages with addresses in the range of 20 to 30, type 20-30.
To add additional address filters for this client, click .
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