Omron E5EC Communications Manual

4 - 15
4 Modbus Communications Procedure
E5@C Digital Temperature Controllers Communications Manual (H175)
4-4 Detailed Description of the Functions
4
4-4-4 Echoback Test
Command Frame
Response Frame
Note: When the command is executed normally, the response returns the same data sent in the command.
(1) Test Data
Enter any 2-byte hexadecimal data.
(2) Response Code
(3) Example Command and Response
The following example shows the command/response for an Echoback Test command.
(In this case, the test data is H'1234.)
(In this case, the slave address is H'01.)
4-4-4 Echoback Test
Function code
Error
code
Name Description
H'88 H'03
Variable data error
A different value (not H'00, H'00) was
returned.
H
'08
--- Normal completion No errors were found.
CRC-16
12
2
1
H'08
H'00
H'00
Test data
2 bytes
Slave
address
Function
code
Fixed data
CRC-16
12
2
1
H'08
H'00
H'00
Test data
2 bytes
Slave
address
Function
code
Fixed data
01 08 00 00
01 08 00 00 12 34
12 34 ED 7C(CRC-16)
ED 7C(CRC-16)
Command:
Response:

Omron E5EC Specifications

General

Brand	Omron
Model	E5EC
Category	Temperature Controller
Language	English