Internode Echo Test - Omron CS1W-SLK11-21 - 06-2004 Manual

FINS Commands for SYSMAC LINK Units
6-4-8

INTERNODE ECHO TEST

Command Block
Response Block
Parameters
118
Present and Max. refresh time (response): The present and maximum data
link refresh times in 4-digit hexadecimal in increments of 1 ms. The range is
0005 to 00FF (5 to 255 ms, in decimal).
Data link status (response): Four bits are allocated to each node address to
provide information on the status of the data links, as shown below. The func-
tion of each of the 4 bits is shown in the diagram following the table.
Byte Bits 4 to 7
Byte 1 Node address 2
Byte 2 Node address 4
Byte 3 Node address 6
Byte 31 Node address 62
3/7 2/6 1/5 0/4
Bit
1: PLC is in RUN or MONITOR mode
1: PLC is stopped because a fatal error has occurred.
1: Not in network or communication error has occurred.
1: Data link is active.
Performs an internode echo test with the indicated node.
08 01
512 bytes max.
Command Test data
code
08 01
512 bytes max.
Command Response
code code
Test data (command and response): Up to 512 bytes of test data can be
included in the command. This data is transmitted to the indicated node and
returned unchanged if communications are normal. If the data returned in the
response differs from that transmitted in the command, an error occurred in
the internode echo test.
Bits 0 to 3
Node address 1
Node address 3
Node address 5
Node address 61
Test data
Section 6-4