Download E5CN-H E5AN-H E5EN-H Digital Controller - Innovative-IDM

SECTION 2 CompoWay/F Communications Procedures
■ Composite Read from Variable Area
This service reads in order the contents of specified addresses in the
variable area.
Service Request PDU
CompoWay/F
MRC SRC Variable
type
0 1 0 4
2
2
2
Read
address
4
Bit
position
0 0
2
Variable
type
Read
address
2
4
Bit
position
0 0
2
Service Response PDU
MRC SRC Response Variable
Read data
code
type
0 1 0 4
2
2
4
2 Number of elements ×8 or 4
Variable
type
2
Note:
Read data
Number of elements ×8 or 4
The read data is read together with the variable type in the order
specified by the command.
(1) Variable Type and Read Start Address
For details on variable types and read start addresses, see SECTION 3
Communications Data for CompoWay/F and SYSWAY.
(2) Bit Position
The E5CN/AN/EN-H does not support bit access. Fixed to “00.”
(3) Number of Read Data Items (Variable Type + Read Data)
Read data length
Number of read data items
For double word
20 max.
For word
25 max.
(4) Response Code
Normal Completion
Response code
0000
Name
Normal completion
Description
No errors were found.
Error Occurred
Response code
1002
2-12
Error name
Command too short
Cause
The command is too
short.