Introduction; Wiring - Omron E5CC Communications Manual

7 Component Communications
7-1 Component Communications
7-1-1

Introduction

You can use component communications to connect two or more E5@C Controllers via RS-485 and
then change the set points or RUN/STOP status for all of the Controllers at the same time. If you
change the set point or RUN/STOP status of the master (i.e., the Controller with a communications unit
number of 0), the set points or RUN/STOP status of all of the slaves (i.e., the Controllers with communi-
cations unit numbers other than 0) that are connected via RS-485 will change automatically. When you
change the set points, the set point from the master can be multiplied by a factor or offset at each slave.
You can also copy the parameter settings in the master to the slaves.
Master changed to
RUN status.
C
Set point of master
changed to 100.
C
Note: To use component communications, the input type and, if an analog input is used, the decimal point position
must be set to the same values for all of the E5@C Controllers. The operation will not work correctly if the
position of the decimal point is different.
7-1-2

Wiring

Wire the E5@C Controllers as shown below.
E5CC/EC/AC
120 Ω (1/2 W)
terminating resistance
7 - 2
RUN
C
25 25
0 0
0: Master 1: Slave
Up to 32 Controllers
SP=90
C
25 25
0 0
0: Master 1: Slave
B(+) B(+)
13 13
14 14
− −
A( ) A( )
No.0 No.1
All slaves from 1 to n are
automatically changed in
order to RUN status.
RUN
C
25
0
n: Slave
The set point of each
slave can be calculated.
SP=120
C
25
0
n: Slave
B(+) B(+)
13 13
14 14
− −
A( ) A( )
No.2 No.n
E5@C Digital Temperature Controllers Communications Manual (H175)
120 Ω (1/2 W)
terminating resistance