Echoback Test; Broadcast Test Results Read - Omron SYSMAC CS1W-CLK11 Operation Manual

Commands and Responses for Controller Link Units
Bit
7 6 5 4 3 2 1
Byte 1 Node #1
Byte 2 Node #2
Byte 3 Node #3
Byte 32 Node #32
Note
6-5-8

ECHOBACK TEST

Command Block
Response Block
Parameters
6-5-9

BROADCAST TEST RESULTS READ

Data link status for each node
0
7 6 5 4 3 2 1
–
Communications error (data link reception)
0: Normal
1: Error
Data link participation
0: Not in data link or data link inactive
1: In data link
Offset error
0: Normal
1: Error
Insufficient (short) receive area
0: Sufficient
1: Insufficient
Remaining receive area
0: Not remaining
1: Remaining
1. The data link status is not refreshed while the data links are inactive.
2. Nodes which are not active in the network or participating in the data links
will generate communications errors.
3. Any node which is not active in the network retains the status that existed
immediately prior to the generation of the communications error.
4. Only the PC operation status and PC error status will be refreshed for
nodes that are not participating in a data link that is active in the network.
Executes an echoback communications test between specified nodes.
1,998 bytes
08 01
max.
Command Test data
code
08 01
Command Response
code code
Test data (command, response): For the command, up to 1,998 bytes of
data can be specified to be sent to a specified node. For the response, the
test data that was sent by the command is returned unchanged.
An error is generated if the data returned by the response is different from the
data that was sent by the command.
Reads for each node the results (number of receptions) of a BROADCAST
TEST DATA SEND command that has been sent to all nodes in a specified
0
PC status
0: Inactive (user program not running)
1: Active (user program running)
PC's CPU Unit error
0: Normal
1: Error
Error: Offset exceeds number of send words.
Insufficient: Receive area is smaller than send area.
Excess data is truncated; other data is received.
Remaining: Receive area is larger than send area.
Data is received and remaining words are cleared.
1,998 bytes
max.
Test data
Section 6-5
151