Omron CS1W-ETN01, Operation Manuals

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9-3 Section Internode Test
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4. Turn OFF the Internode Test Start Switch allocated to the Ethernet Unit in
the CPU Bus Unit Area to stop the test.
Note 1. The test parameters are effected as soon as they are set or changed. It is not
necessary to reboot or restart. If the test parameters are changed during the
test, however, the new parameters will not be used until the Internode Test
Start Switch is turned OFF and then back ON.
2. Line traffic on the Ethernet network will increase during the test, possibly af-
fecting system performance.
Setting the Test Parameters
Before starting the test, set the following parameters in the software switches in
the words in the DM area allocated to the Ethernet Unit. The test parameters
become effective immediately after they are set. It is not necessary to reboot or
restart the PC.
The software switches are stored at offsets from the first word calculated with the
formula: first word = (100 x unit number).
Offset Contents
+0 Bits 8 to 15:
Remote network address Bits 0 to 7:
Remote node number
+1 Number of send bytes
+2 Response monitor time
Setting Range The parameter setting ranges are given in the following table.
Parameter Range
Remote network address 00 Hex: Local network
01 to 7F Hex (1 to 127 decimal)
Remote node number 01 to 7E Hex (0 to 126 decimal)
Number of send bytes 0000 Hex specifies the max. length of 1,996
bytes.
0001 to 07CC Hex (1 to 1996 decimal)
Response monitor time
(Unit: 10 ms) 0000 Hex specifies 2 s.
0001 to FFFF Hex (1 to 65535 decimal)
Note 1. The following limits apply to the number of bytes sent when running the test
through a SYSMAC NET or SYSMAC LINK network:
SYSMAC NET: 1,986 bytes
SYSMAC LINK: 512 bytes
2. Broadcast transmissions (target node address = FF) cannot be used for the
internode test.
3. A timeout error will occur if no response is received within the set response
monitor time.
Starting and Stopping the Internode Test
Bit 01 of the first word in the words allocated to the Ethernet Unit in the CPU Bus
Unit Area is used as the Internode Test Start Switch. Turn ON bit 01 to start the
internode test and turn bit 01 OFF to stop the internode test. The address of the
word containing the Internode Test Start Switch is calculated by the following for-
mula:
Word = 1500 + (25 x unit number)
–
15
–
14
–
13
–
12
–
11
–
10
–
9
–
8
–
7
–
6
–
5
–
4 3 2 1
–
0 Bit
Internode Test Start Switch
0: Stop internode test
1: Start internode test
Configuration of the
Software Switches