Filter
Top Products
54
Checking Communications Section 3-12
Note 1. The internode test can be easily carried out by manipulating dedicated
control switches for the Ethernet Unit. For details, refer to 9-3 Internode
Test.
2. Internode testing of the FINS communications service can also be carried
out by means of the FINS commands INTERNODE ECHO TEST and
BROADCAST TEST RESULTS READ. For details, refer to 11-3-4 INTER-
NODE ECHO TEST and 11-3-5 BROADCAST TEST RESULTS READ.
3-12-4 Simple Startup Test Example
When performing FINS communications using UDP with the Ethernet Unit, it
is recommended that a startup test (a connections verification test) is per-
formed under simple conditions, according to the procedure detailed below.
Users starting up the system for the first time should perform the following set-
tings and operations and ensure correct operation. The actual application
conditions and setting methods for the CS1W-ETN01 are indicated below as
an example.
Application Conditions
• A 1-to-1 connection is made between the host computer (workstation or
personal computer) and the PC (Programmable Controller). There are no
communications beyond the network, i.e., there are no inter-network com-
munications.
• The MEMORY AREA READ command (a FINS command addressed to
the PC with command code 0101 hex) is sent to the PC from the host
computer via Ethernet.
• IP address conversion is set to automatic generation (default setting).
Setting Method
1,2,3... 1. Set the IP Address
Set the IP address of the Ethernet Unit using the 8 hexadecimal rotary
switches on the back of the Unit so that it does not coincide with the IP ad-
dress of the host computer. For example, if the IP address of the host com-
puter (workstation or personal computer) is 133.113.0.40
(85.71.00.28 Hex), set 133.113.00.42 (85.71.00.2A Hex) as the IP address
of the Ethernet Unit. When using the automatic generation method for ad-
dress conversion, set SW7 and SW8 to the same values as the node num-
ber setting. Set the rest of the host number setting (SW5 and SW6) to
zeroes.
Note If the IP address of the host computer is 133.113.102.40, set the IP
address of the Unit to 133.113.102.42. In this case, set the subnet
mask to the class-C subnet mask 255.255.255.0.
2. Set the Unit Number and the Node Address
• Set the unit number to 00.
• Set the node address to 2A.
3. Set the Routing Tables
The routing tables describe the transmission path for FINS messages
when the FINS communications are used. Connect CX-NET and make the
following settings.