Omron E5CN Manual

SECTION 2 CompoWay/F Communications Procedures
2-6
2.2 Structure of Command Text
■ PDU Structure An MRC (Main Request Code) and SRC (Sub-Request Code) followed
by the various required data is transferred to the command text.
Service Request PDU
The MRES (Main Response Code) and SRES (Sub-Response Code)
are transferred to the response frame following the above MRC/SRC.
Data is then transferred following the MRES and SRES.
Service Response PDU (Normal Response)
If the specified command text could not be executed, the service
response PDU will contain only the MRC/SRC and MRES/SRES.
Service Response PDU (Command Text Not Executed)
The MRES and SRES become the response code when processing did
not end in “normal completion.”
■ Area Definitions Areas comprise only the variable area.
■ Type Code (Variable Type)
The following tables show the variable area type codes.
MRC SRC
Data
MRES SRES MRC SRC
Data
MRES SRES MRC SRC
MSB LSB
1 1 0000
Variable type (1 byte)
Access size
11: Double word
Area
0: Setup area 0
1: Setup area 1
Read/Write
0: Read only
1: Read/Write

Omron E5CN Specifications

General

Brand	Omron
Model	E5CN
Category	Temperature Controller
Language	English