Description Of Fins Commands - Omron CS1W-LC001 Operation Manual

Description of FINS Commands

6-3 Description of FINS Commands
178
This section describes the command and response formats for FINS
commands issued to the Loop Control Unit.
READ MULTIPLE ITEMS FROM FUNCTION BLOCK
Function
Reads multiple ITEMs from a single function block.
Command format
Data format
Data length
(bytes)
1) Parameter type
Specify function block addresses 0 to 999 within the range 0 to 03E7 Hex.
2) Number of ITEMs
Specify the number of ITEMs to be read from the specified function block.
3) Read start address
Specify ITEM numbers 0 to 999 in the function block specified by
parameter type within the range 0 to 03E7 Hex.
Specifiable ITEMs are all ITEMs in all function blocks excluding the
sequence commands (ITEM011 onwards) in the Step Ladder Program
block (Block Model 301).
Note 1 Specify the read start address for the number of ITEMs.
Response format
Command code
Data
format
02 Hex 40 Hex MRES SRES
Data
length 1
(bytes)
Parameter
Command code
type (block
02 Hex 40 Hex
address)
1 1
Response
Number of
code
read ITEMs
1 1 1
Number of Read start
ITEMs address
2 2
Read Data
normal start length
address (byte)
2 2 1
Á
Section 6-3
command code
02 40
Á repeated
Â
2
Á
Read
Á repeated
data
 Â