Specifications

7 Component Communications
7 - 2
E5C-T Digital Controllers Programmable Type Communications Manual (H186)
7-1 Component Communications
You can use component communications to connect two or more E5@C-T Controllers via RS-485 and
then transfer the fixed SP or program SP or change the RUN/RESET status for all of the Controllers at
the same time. If you transfer the fixed SP or program SP or change the RUN/RESET status of the
master (i.e., the Controller with a communications unit number of 0), the set points or RUN/RESET sta-
tus of all of the slaves (i.e., the Controllers with communications unit numbers other than 0) that are
connected via RS-485 will change automatically. You can transfer the SP only when the master is an
E5@C-T Controller and the slave is an E5@C Controller. If you transfer the SP, 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.
• Transferring the Program SP (Program SP Mode)
• Transferring the Fixed SP (Fixed SP Mode)
Note1 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-T/E5@C Controllers. The operation will not
work correctly if the position of the decimal point is different.
2 When the Reset Operation parameter is set to fixed SP operation, the SP mode status will automatically
change according to the RUN/RESET status. In RUN status, the Controller will change to program SP
mode. In RESET status, the Controller will change to fixed SP mode.
7-1-1 Introduction
25
0
C
25
0
C
25
0
C
0: Master 1: Slave
Fixed-value Controllers
n: Slave
RUN RUN
All slaves from 1 to n are automatically
changed in order to RUN status and
the program SP is transferred.
Master changed to
RUN status.
Programmable Controller
Fixed SP of master changed to 100.
25
0
C
25
0
C
25
0
C
0: Master 1: Slave n: Slave
SP=90 SP=120
The set point of each
slave can be calculated.
Fixed SP of master
changed to 100.