Programming manual M238 | 3 MB - BERGER - POSITEC

Step Action Comment
3 Enter the valid Subnet mask assigned to
the gateway by your network administrator.
Please note that you cannot leave this field
blank; you must enter a value.
(See notes 1 and 3.)
4 Enter the IP address of the Gateway.
(See notes 1 and 4.)
5 Check and validate your configuration. -
6 Power off the Controller, then power on
again.
Ethernet/Modbus Gateway
By default, the programming software automatically
computes and displays a default subnet mask based on
the network class that you have provided in the IP Address
field above. Default subnet mask values, according to the
category of the gateway network IP address, follow these
rules:
Class A network -> Default subnet mask: 255.0.0.0
Class B network -> Default subnet mask: 255.255.0.0
Class C network -> Default subnet mask: 255.255.255.0
On the LAN, the gateway must be on the same segment as
the 499TWD01100. This information typically is provided to
you by your network administrator. Please note that no
default value is provided by the application, and that you
must enter a valid gateway address in this field.
A power cycle is required to force the M238 to transfer the
IP address to the 499TWD01100.
NOTE:
1. Consult your network or system administrator to obtain valid IP parameters for
your network.
2. Each connected device on an Ethernet network segment must have a unique IP
address. When connected to the network, the gateway runs a check for duplicate
IP address. If a duplicate IP address is located over the network, the STATUS
LED will emit 4 flashes periodically. You must then enter a new duplicate-free IP
address in this field.
3. Unless the gateway has special subnet requirements, use the default subnet
mask.
4. If there is no gateway device on your network, simply enter the gateway’s IP
address in the Gateway Address field.
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