GE GFK-1541B manual CPU374 Configuration Parameters Ethernet Parameters

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CPU374 Configuration Parameters

Ethernet Parameters

Configuration Mode: This is fixed as TCP/IP.

Adapter Name: This field is set to 0.1 (the rack and slot of the Ethernet Interface) and cannot be changed.

Status Address: The Status Reference Type is the location of the LAN Interface Status (LIS) bits (16 bits) and the Channel Status bits (64 bits). The Channel Status bits are always located immediately following the LAN Interface Status bits. The Status address can be assigned to %I, %Q, %R, %AI or %AQ memory. The default value is the next available %I address.

Note

Do not use the 80-bits assigned to the LIS bits and Channel Status bits for other purposes or your data will be overwritten.

Status Length: This is the sum of the LIS bits and the Channel Status bits. This value is automatically set to either 80 bits (for %I and %Q Status address locations) or 5 words (for %R, %AI, and %AQ Status address locations).

IP Address, Subnet Mask, and Gateway IP Address : These values should be assigned by the person in charge of your network (the network administrator). TCP/IP network administrators are familiar with these parameters. It is important that these parameters are correct; otherwise, the Ethernet Interface may be unable to communicate on the network and/or network operation may be corrupted. It is especially important that each node on the network is assigned a unique IP address.

However, if you have no network administrator and are using a simple isolated network with no gateways, you can use the following range of values for the assignment of local IP addresses:

10.0.0.1First PLC

10.0.0.2Second PLC

10.0.0.3Third PLC

.	.
.	.
.	.
10.0.0.255	PLC Programmer TCP or host

2-34 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002 GFK-1541B