Omron ZEN - Echoback Test

2.3 Detailed Description of the Services
31
● Response Code
Normal Completion
Error Occurred
■ Echoback Test
This service performs an echoback test.
Service Request PDU
Service Response PDU
● Test Data
Set between 0 and 19 bytes of user-defined test data.
Set a value for the test data within the ranges shown below according to
the communications data length.
Do not set the value H’40. No response will be returned.
Response
code
Name Description
0000 Normal completion No errors were found.
Response
code
Name Description
1001 Command too long The command is too long.
1002 Command too short The command is too short.
1100 Parameter error The write data is out of the setting
range.
2203 Operation error Unit error (Memory error occurred,
or unused command was sent.)
MRC SRC
0
22
801
0 to 19
Test data
MRC SRC
0
22
801
0 to 194
Response
code
Test data
Communications
data length
Test Data
8 bits ASCII data: H’20 to H’7E or H’A1 to H’FE
7 bits ASCII data: H’20 to H’7E