Omron E5AR - MANUAL 2 User Manual

7.9 Commands and responses (Communication/Modbus)
7-17
Communication
(Modbus)
7.9 Commands and responses (Communication/Modbus)
The E5AR/ER provides a set of command frames that make use of variable area read/write commands,
operation commands, and other services provided by the Modbus communication protocol.
E5AR/ER command frames are explained below.
■ Monitor value read (Communication/Modbus)
This command is used to read the PV, status, and other monitor
values. The number of elements can be set from H'0004 to 006A (4 to
106) to allow reading of monitor values in contiguous addresses.
When used in setting area 1, the response for the PV and internal SP
is "0" and the response for the status is as indicated in the notes in
"Appendix Setting list Status" (P.A-8).
The above indicates a normal end. For information on error responses,
see "7.5 Reading the variable area" (P.7-10).
Address
Monitor value
Address
Monitor value
Ch Data name Ch Data name
H'0400
1
Version H'8400
3
Version
H'0402 Modification type H'8402 Modification type
H'0404 PV H'8404 PV
H'0406 Internal SP H'8406 Internal SP
H'0408 Bank No. monitor H'8408 Bank No. monitor
H'040A PID Set No. monitor H'840A PID Set No. monitor
H'040C Status H'840C Status
H'4400
2
Version H'C400
4
Version
H'4402 Modification type H'C402 Modification type
H'4404 PV H'C404 PV
H'4406 Internal SP H'C406 Internal SP
H'4408 Bank No. monitor H'C408 Bank No. monitor
H'440A PID Set No. monitor H'C40A PID Set No. monitor
H'440C Status H'C40C Status
Command
H’03
Slave
address
Function
mode
Read start
address
Number of
elements
CRC-16
2 bytes2211
Response
H’03
Slave
address
Function
mode
Byte
count
Read data
Data 1 Data 1
Data n Data n CRC-16
2
Most significant Least significant
Most significant Least significant
Number of elements × 2 bytes111

Omron E5AR - MANUAL 2 Specifications

General

Brand	Omron
Model	E5AR - MANUAL 2
Category	Controller
Language	English