Digi Connect IT 16, Руководство пользователя

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Services Modbus gateway
Digi Connect IT® 16/48 User Guide 401
5. For Packet mode , select RTU or RAW (if Connection type is set to Socket ) or ASCII (if
Connection type is set to Serial ) for the type of packet that will be used by this connection.
The default is RTU .
6. For Packet idle gap , type the maximum allowable time between bytes in a packet.
Allowed values are between 10 milliseconds and one second, and take the format number
{ ms|s }.
For example, to set Packet idle gap to 20 milliseconds, enter 20ms .
7. If Connection type is set to Socket , for Inactivity timeout , type the amount of time to wait
before disconnecting the socket when it has become inactive.
Allowed values are any number of minutes or seconds up to a maximum of 15 minutes, and
take the format
number { m|s }.
For example, to set Inactivity timeout to ten minutes, enter 10m or 600s .
8. (Optional) If Connection type is set to Serial , click Half duplex to enable half duplex (two
wire) mode.
9. (Optional) If Connection type is set to Socket , click to expand Access control list :
n
To limit access to specified IPv4 addresses and networks:
a. Click IPv4 Addresses .
b. For Add Address , click

.
c. For Address , enter the IPv4 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, 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 Connect IT
16/48 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.