IMO Precision Controls K7 Series User Manual

Chapter 8 Communication Function
8-74
8.3.4 Instruction and example
1) MODBUS
Available Device Flag
Instruction
M P K L
F
T C S D
#
D integer
Step
no.
Error
(F110)
Zero
(F111)
Carry
(F112)
S1OOOOOOO OO
S2OOOO OO OO
7
MODBUS
S3OOOO OO OO
O
Example program
S3 format is as below.
bit 15 bit 8 bit 1 bit 0
NDR : when the communication ends normally, this bit turns on during 1 scan.
Error bit : when communication error occurs, this bit turns on during 1 scan. At that time error code stores bit 8 ~ bit 15.
MODBUS S1 S2 S3 S1
Device address which is registered communication parameter
Device address which is stored communication data
S3
Device address which is displayed communication status
S2
[ MOV h0025 D0002 ]
[ MOV h0013 D0001 ]
[ MOV h0301 D0000 ]
[ MODBUS D0000 D1000 M100 ]
M0020
F0012
It designates slave station no. and function code.
It designates no. of reading
M0020 turns on, MODBUS communication starts .
Receive data stores D1000.
M100 stores communication status
It designates address
Error bit NDR bit
Error code

IMO Precision Controls K7 Series Specifications

General

Brand	IMO Precision Controls
Model	K7 Series
Category	Controller
Language	English